mehdi taheri asghari
Articles in Press, Accepted Manuscript, Available Online from 13 October 2020
Abstract
In order to investigate the effect of municipal sewage sludge and Azotobacter and Azospirillum on some nitrogen indices and fatty acid composition, an experiment was conducted in the field of south of Tehran in Water and Wastewater Company during 2016-2017 and 2017-2018 Crop years. The experiment was ...
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In order to investigate the effect of municipal sewage sludge and Azotobacter and Azospirillum on some nitrogen indices and fatty acid composition, an experiment was conducted in the field of south of Tehran in Water and Wastewater Company during 2016-2017 and 2017-2018 Crop years. The experiment was conducted as a factorial experiment in a randomized complete block design with three replications. Experimental factors include canola seed inoculation (control, inoculation with azotobacter, inoculation with azospirillum) and The use of municipal sewage sludge (control, recommended fertilizer, 10, 20 and 30 tons of sewage sludge). The results showed that the interaction between seed inoculation and sewage sludge treatments on eicosanoic, palmitic and arachidonic fatty acids was significant at 1% . The highest amount of oleic and linoleic acid was obtained from 30 tons of sewage sludge treatment with 61.23 and 18.41 Percent, respectively. Nitrogen uptake efficiency was highest in fertilizer recommendation treatment with Azotobacter (16.79 Percent) . Interaction effects of inoculation and sewage sludge treatments on both trait consumption efficiency and productivity efficiency (agricaltural) were significant at (p ≤ 0.01) in terms of biomass and grain yield. The results indicate that the use of nitrogen fertilizer in proper amount and provide its in a timely manner Combined with inoculation, it could have a greater effect on the Productivity efficiency (agricaltural) index. It can be stated that with the appropriate use of sewage sludge, with the necessary precautions, it can be a good substitute for nitrogen fertilizers.
masoud fattahi; Abdorahman Mohammadkhani; Behroz Shiran; Bahram Baninasab; Rodabe Ravash
Articles in Press, Accepted Manuscript, Available Online from 23 September 2020
Abstract
An experiment was achieved to compare the resistance of different mycorrhizal pistachio rootstocks to salinity and drought stress in completely randomized design with three replications. In this experiment, we used of Funneliformis mosseae and four pistachio species, Badami-e Riz Zarand, Qazvini, Sarakhs ...
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An experiment was achieved to compare the resistance of different mycorrhizal pistachio rootstocks to salinity and drought stress in completely randomized design with three replications. In this experiment, we used of Funneliformis mosseae and four pistachio species, Badami-e Riz Zarand, Qazvini, Sarakhs and UCB1. In addition, experiment of water stress in 4 levels (100, 80, 60 and 40% FC), and experiment of salinity stress in 4 levels (0.91, 7.57, 16.12 and 24.63 dSm-1), were applied for 60 days. At the end of experiment, different characteristic such as total biomass, leaf area, tissue moisture percentage and electrolyte leakage was measured. Also, during of experiment total chlorophyll, carotenoids and anthocyanin pigments were survey and analyzed. The results indicated that mycorrhizal symbiosis improved total biomass, leaf moisture content under both of drought and salinity stress. Under both stress conditions, tissue moisture content and total leaf chlorophyll content was decreased and anthocyanin content and electrolyte leakage increased and the lowest leaf, stem and root moisture content were observed at the highest drought and salinity levels. UCB1 had the highest biomass and moisture under salinity stress and the highest leaf and stem moisture content and lowest electrolyte leakage was observed in Sarakhs rootstock under drought stress. It seems UCB1 and Sarakhs symbiotic with mycorrhiza can be useful for salinity and drought stress respectively.
Mojtaba Salehi Sheikhi; Ali Nakhzari Moghaddam; ali Rahemi karizaki; Majid Mohamad Eamaeili
Articles in Press, Accepted Manuscript, Available Online from 03 December 2020
Abstract
In order to investigate the effect of pea )Pisum sativum L.( cultivar and replacement and additive intercropping ratios of pea and spinach )Spinacia oleracea L. (on yield and competition indices, a factorial experiment based on randomized complete block design with three replications was conducted at ...
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In order to investigate the effect of pea )Pisum sativum L.( cultivar and replacement and additive intercropping ratios of pea and spinach )Spinacia oleracea L. (on yield and competition indices, a factorial experiment based on randomized complete block design with three replications was conducted at Gonbad Kavous University research field during 2016-2017. Intercropping ratios at nine levels consisted of pure pea, pure spinach, 33, 50 and 67 percent spinach instead of pea, addition series of 33, 50, 67 and 100 percent spinach to pea and pea cultivars were Shamshiri and Pofaki. Land equivalent ratio and relative crowding coefficient in additive treatments were more than replacement treatments and more than one in all treatments. The highest land equivalent ratio with 1.333 was computed for 100 percent pea+100 percent spinach. In replacement series, pea was as a dominant plant, but in additive series spinach was dominant. No actual yield loss was observed in all treatments. The highest system productivity index was related to 100 percent pea + 100 percent spinach with 3045. Overall, land equivalent ratio over than one and positive system productivity index specially treatment of 100 percent pea+100 percent spinach indicated benefit of intercropping of pea and spinach.
Zeynab- Kobra Pishva; Majid Amini-Dehaghi; Amir Bostani; Amir-Mohammad Naji
Articles in Press, Accepted Manuscript, Available Online from 02 February 2021
Abstract
In order to study the effect of nitrogen fertilizer treatments on yield traits, essence percentage and the amount of nitrogen in the stem and leaves Cumin under different irrigation regimens, an experiment was conducted as split plot based on randomized complete block design with three replications in ...
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In order to study the effect of nitrogen fertilizer treatments on yield traits, essence percentage and the amount of nitrogen in the stem and leaves Cumin under different irrigation regimens, an experiment was conducted as split plot based on randomized complete block design with three replications in the 2016-2017 crop season at the Research Field of Agriculture Faculty, Shahed University, Tehran, Iran. In this experiment, the main plot consisted of different irrigation regimes at three levels (no stress, mild stress or irrigation based on draining 40% of available water and severe stress or irrigation based on draining 80% of available water) and Subplot included four levels of nitrogen fertilizer treatments (100% and 50% fertilizer recommendation of nitrogen (urea), seed stained biofertilizer application (Nitroxin) and combination treatment biofertilizer and 50% fertilizer recommendation nitrogen. The results showed that increasing deficit irrigation at a mild level and more than that at a severe level, although increased the percentage of essence, but its negative effect on yield and yield components, total chlorophyll, shoot nitrogen concentration and essence yield was significant. Application of combination nitrogen fertilizer (urea + Nitroxin) while increasing the yield and yield components of Cumin, increased the percentage and yield of essence, and shoot nitrogen concentration and generally caused the most desirable quantitative and qualitative yield of Cumin.
maryam habibi; faeze zaefarian; farhad rejali; nadali bagheri
Articles in Press, Accepted Manuscript, Available Online from 02 February 2021
Abstract
In order to investigate the effect of Arbuscular mycorrhizal fungi in Saffron rhizosphere on yield and nutrient uptake, a study was conducted as split plot factorial based a randomized completely design with three replications in the institute of Soil and Water research in Karaj, Treatment consisted: ...
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In order to investigate the effect of Arbuscular mycorrhizal fungi in Saffron rhizosphere on yield and nutrient uptake, a study was conducted as split plot factorial based a randomized completely design with three replications in the institute of Soil and Water research in Karaj, Treatment consisted: Irrigation regime as the main factor in three levels (such as complete irrigation as control, water interruption at the beginning of the growing season (mild restriction water) and water interruption at the beginning and mid of the growing season (severe restriction water)), sowing media in three levels (no organic fertilizer, vermicompost (20 ton ha-1) and biochar (10 ton ha-1) and Arbuscular mycorrhizal fungal in three levels (no application, strain a and strain b) as the sub factor. Based on the molecular findings, both strains isolated from saffron rhizosphere belonged to Rhizophagus irregularis. The results of this study showed that the highest fresh yield of flowers, phosphorus and potassium in the leaves with the amount of 7.76 g per pot, 1032.4.4 and 24876.8 mg kg-1, respectively, belonged to the complete irrigation × biochar × strain b treatment. Complete irrigation × vermicompost × strain b treatment had the highest percentage of nitrogen (1.757) in the leaves. The highest fresh and dried yield of stigma (0.358 and 0.062 gr per pot, respectively) was observed in complete irrigation × biochar treatment. Identification of native mycorrhizal fungi and its production as well as the use of organic fertilizers can play an important role in sustainable production of this plant.
Mehdi Rashtbari; Ali Akbar Safari Sinegani
Articles in Press, Accepted Manuscript, Available Online from 03 February 2021
Abstract
in the present study, the effect of various application methods of mostly applied antibiotics in agriculture (gentamicin, oxytetracycline, penicillin) at different concentration on root and shoot growth indices and number of rhizobial nodules of chickpea plant and the count of total bacteria, fungi and ...
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in the present study, the effect of various application methods of mostly applied antibiotics in agriculture (gentamicin, oxytetracycline, penicillin) at different concentration on root and shoot growth indices and number of rhizobial nodules of chickpea plant and the count of total bacteria, fungi and coliforms in soil around the plant root after a growth period of 60 days in greenhouse was evaluated as split-plot design. Application of antibiotics, even gentamicin, resulted to increase in plant shoot dry weight compared to control and the lowest weight by 0.98 g/pot observed in control treatment (without antibiotic). Root dry weight in penicillin applied treatments, specially at the higher concentration was the highest (1.1 g/pot) and was the lowest in gentamicin applied treatments, especially when applied as seed coating (0.48 g/pot). Totally, antibiotic application caused decrease in the root to shoot ratio compared to control. Application of all antibiotics increased soil bacterial count in the pots after 60 days in comparison with the control. Also, increasing the concentration of gentamicin and penicillin, decreased plant root nodule number by 78.8 and 59.7 percent, respectively. Application of antibiotics as seed coating had the highest negative impact on chickpea plant growth indices as well as rhizobial nodule numbers in plant root. Overall, the effect of antibiotics on soil microbial count and plant growth depends on antibiotic type and application method.
Mojdeh Sadat Khayat Moghadam; Ahmad Gholami; Amir Hossein Shirani rad; Mahdi BaradaranFiroozabadi; Hamid Abbasdokht
Articles in Press, Accepted Manuscript, Available Online from 03 February 2021
Abstract
In order to study the effects of late-season drought stress and foliar application of potassium silicate on yield and yield components of spring genotypes of canola, a factorial split-plot experiment was conducted in Karaj, Iran in a randomized complete block configuration with three replications for ...
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In order to study the effects of late-season drought stress and foliar application of potassium silicate on yield and yield components of spring genotypes of canola, a factorial split-plot experiment was conducted in Karaj, Iran in a randomized complete block configuration with three replications for two years of cultivation (2016-2018). The irrigation was performed at two levels in this study, including routine irrigation (control) and interruption of irrigation from the pod formation stage. Potassium silicate foliar application at two levels comprised of 0 and 4 g liter-1 in factorial status in main plots and five Brassica napus L. genotypes including OG×AL, RGS×SLM, DALGAN, RGS003 and RGS×Okapi in subplots. The results showed that the measured properties were affected by the applied treatments. Full irrigation with foliar application in OG×AL genotype resulted in highest seed yield (5620 Kg/ha) and total chlorophyll content (1.71 mg/g.FW) . increased stomatal resistance, leaf proline, leaf soluble carbohydrates and decreased total chlorophyll content and relative leaf water content. Under drought stress conditions, DALGAN and RGS × SLM genotypes had higher yield, which indicates its better performance under stress conditions. Finally, our research demonstrated Potassium Silicate's beneficial effects in improving the drought tolerance of canola plants, particularly at the end of the season. Our study will act as a foundation for attempting new approaches to mitigate drought damage and establish a functional connection between the position of potassium silicate, physiological response, and drought stress tolerance in canola plants.
Abbas Keshtehgar; Mahdi Dahmardeh; Behrooz Keshtegar; Ahmad Ghanbari; Issa Khammari
Articles in Press, Accepted Manuscript, Available Online from 03 February 2021
Abstract
To evaluate the production of mashhadi melon (Khatouni cultivar) under the different management of fertilizer levels and vermicompost bed, this study was conducted as a factorial experiment in the form of a randomized complete block design with three replications during the spring of 2020 crop year as ...
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To evaluate the production of mashhadi melon (Khatouni cultivar) under the different management of fertilizer levels and vermicompost bed, this study was conducted as a factorial experiment in the form of a randomized complete block design with three replications during the spring of 2020 crop year as two separate designs in Fariman and Zahak counties. Application of fertilizers in six levels include non-use of fertilizer (control), cow manure, sheep manure, nanobiomic foliar application, silicone foliar application, and complete application of chemical fertilizer as the first factor and four different levels of vermicompost include non-use of vermicompost (control), 5, 10 and 15 tons per hectare as the second factor. Results showed that the highest fruit yield, total titration, percentage of nitrogen, phosphorus, fruit potassium, and fruit flesh thickness in both Fariman and Zahak counties was obtained from nanobiomic foliar application under 15 tons per hectare of vermicompost. Also, the highest percentage of total soluble solids in Fariman county was observed jointly in the treatment of sheep manure and the treatment of chemical fertilizers and Zahak county in the treatment of non-use of fertilizer (control) under 10 tons per hectare of vermicompost. In Fariman county, the results of cow manure, sheep manure, nanobiomic, silicon, and chemical fertilizers at the levels of 10 tons and 15 tons per hectare of vermicompost did not show significant differences. Therefore, with less consumption of vermicompost, nanobiomic foliar application under 10 tons per hectare of vermicompost is recommended for melon cultivation in Fariman county.
reza fatemi devin; Seyed Mohammad Bagher Hoseini; hosani moghadam; Babak Motasharezadeh
Articles in Press, Accepted Manuscript, Available Online from 03 February 2021
Abstract
In order to investigate the effect(s) of biologic and organic fertilizers on light consumption efficiency in growing maize-bean mixture, an experiment was conducted in the form of split plots in a randomized complete block design with 12 treatments. Main plots containing different fertilizer systems ...
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In order to investigate the effect(s) of biologic and organic fertilizers on light consumption efficiency in growing maize-bean mixture, an experiment was conducted in the form of split plots in a randomized complete block design with 12 treatments. Main plots containing different fertilizer systems in four levels: including 30 kg / ha urea, Azotobacter, vermicompost, Azotobacter + vermicompost and subplots containing cultivation compound of pure maize and pure bean were 50% maize + 50% bean, + 60% maize + 60% pinto bean and 80% maize + 80% pinto bean. The results revealed that leaf area index, dry matter accumulation and light consumption efficiency of maize were significantly higher than pure culture. The highest light use efficiency was related to the combined use of Azotobacter and vermicompost in mixed culture of 80 % maize + 80% pinto beans with an average of 2.29 g / MJ, which increased the light use efficiency by 63% compared to 30 kg / ha of pure culture. Also, the highest dry matter related to the mixed culture of 60% maize + 60% pinto beans was obtained in the amount of 1728 g / m2, which increased the dry matter accumulation by 16% compared to pure culture. In general, the combined composition of organic and biologic fertilizers in intercropping has the ability to compete with urea chemical fertilizer in terms of mechanistic indicators of plant growth analysis.
Seyedeh nasrin Hosseini; Jalal Jalilian; esmaeil gholinezhad
Articles in Press, Accepted Manuscript, Available Online from 03 February 2021
Abstract
In order to investigate the effect of water deficit stress and stress modifiers on some morphological and physiological characteristics and yield of Quinoa, a pots factorial experiment based on a completely randomized design with 16 treatments and 6 replicates was done in 2019 at Urmia University. The ...
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In order to investigate the effect of water deficit stress and stress modifiers on some morphological and physiological characteristics and yield of Quinoa, a pots factorial experiment based on a completely randomized design with 16 treatments and 6 replicates was done in 2019 at Urmia University. The first factor includes water deficit stress at four levels, stress at the vegetative growth stage, stress at the reproductive growth stage, stress at seed filling stage and no stress (control). The second factor was foliar spraying of ascorbic acid, salicylic acid, nano-micronutrient chelate fertilizer and Control (water spray). Water deficit stress at different growth stages decreased plant height, a number of laterals, dry weight and fresh weight of vegetative organs, root volume, fresh and dry weight of root and root length compared to control. However, electrolyte leakage and leaf temperature increased. The results showed that water deficit stress at post-anthesis stage decreased grain yield via decreasing 1000-grain weight. Foliar application of growth regulators by improving yield components, increased the yield of quinoa under water deficit stress condition. Therefore, according to the results, it seems that the use of stress modulators in quinoa under water deficit stress with stimulating growth and metabolism, cause to tolorate water deficit stress.
Mohsen Seilsepour
Articles in Press, Accepted Manuscript, Available Online from 14 March 2021
Abstract
In order to investigate the effects of compost and nitrogen on the quantitative and qualitative characteristics of forage maize and some physical and chemical properties of soil, a factorial experiment with 9 treatments in a factorial randomized complete block design with RCFS was conducted. Natural ...
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In order to investigate the effects of compost and nitrogen on the quantitative and qualitative characteristics of forage maize and some physical and chemical properties of soil, a factorial experiment with 9 treatments in a factorial randomized complete block design with RCFS was conducted. Natural province of Tehran was conducted in 2014. Treatments included three levels of residual compost (0, 10 and 20 t ha-1) and three levels of nitrogen (0, 100 and 200 kg ha-1). The effect of municipal waste and nitrogen compost on yield and yield components was significant. The use of municipal solid waste compost significantly increased the electrical conductivity of soil, nitrate, iron, zinc uptake and significantly decreased soil reaction. Waste compost application also improved some of the soil physical properties including significant reduction in bulk density and increased field capacity and percentage of available soil water. Maximum dry forage yield of 21.44 ton / ha was obtained from application of 20 ton / ha municipal waste compost with 200 kg N/ha.
Mahdi Motaefi; Alireza Sirousmehr; Mohsen Mohsen Mousavi nik
Articles in Press, Accepted Manuscript, Available Online from 14 March 2021
Abstract
Drought stress is the most important factors in reducing crop yield, and, it is important to know the ways to cope with drought. This experiment was carried out to investigate the effect of organic growth Stimulator (Hamoon green) on yield and some physiological indices of safflower under drought stress ...
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Drought stress is the most important factors in reducing crop yield, and, it is important to know the ways to cope with drought. This experiment was carried out to investigate the effect of organic growth Stimulator (Hamoon green) on yield and some physiological indices of safflower under drought stress during the 2017-2018 in university of Zabol (Chahnime) as split plot based on RCBD with three replications. Experimental treatments included drought factor based on plant growth stages at three levels (complete irrigation throughout the growing season, irrigation up to terminal bud forms, irrigation up to completed flowering) and spraying factor of organic growth stimulator at 4 levels (pure water), foliar application was Hamoon green 1 liter in 10 liters + calcium, Hamoon green 1 liter in 20 liters + calcium and Hamoon green 1 liter in 30 liters + calcium. The results showed that drought reduced the height, 1000-seed weight and oil percentage by 44.41, 31.24 and 17.10%, respectively. Spraying hamoon green 1 liter in 10 liters + calcium caused an increase of 18.03, 13.90 and 13.74 percent of the above traits compared to the control. The highest grain yield (1885.55 kg.ha-1), chlorophyll a, b, total and carotenoids (3.49, 0.94, 2.74 and 5.34 mg.gr-1 fw, respectively), selenium content (5.18 mg.kg-1 fw) and seed calcium content (2.91%) were obtained from hamoon green 1 liter in 10 liter + calcium and complete irrigation treatment. In general, it seems that by spraying 1 liter per 10 liters of calcium, good performance can be achieved.
Asma Aslani; Mahroo Mojtabaie Zamani
Articles in Press, Accepted Manuscript, Available Online from 14 March 2021
Abstract
In order to investigate the possibility of reducing the negative effects of late-season heat stress using phosphate-solubilizing bacteria, this experiment was carried out as split factorial based on a complete randomized block design with three replications in Haftkel city, in growing season 2016-2017. ...
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In order to investigate the possibility of reducing the negative effects of late-season heat stress using phosphate-solubilizing bacteria, this experiment was carried out as split factorial based on a complete randomized block design with three replications in Haftkel city, in growing season 2016-2017. The main factor consisted of planting date in two levels and the sub factors as a factorial consisted of five bread wheat cultivars and of two levels application of phosphate solubilizing bacteria . The results showed that with delay in planting and occurrence of heat stress in grain filling period, grain yield, biological yield, harvest index and effective grain filling period decreased and grain filling rate increased and the reaction intensity varied depending on the cultivar. Mehregan cultivar had high yield in both planting dates and in the delayed planting date with the highest increase in grain filling rate and the lowest decrease in number of seeds per spike, had the highest grain yield and harvest index. By inoculating the seeds with bacteria, on both planting dates, the number of seeds per spike increased by 4.6%, grain yield by 7.6% and biological yield by 7%, but the effect of phosphate solubilizing bacteria on mitigating the effect of heat stress was not proven and the positive effect of bacteria was the same on both planting dates. Overall, higher ability to increase grain filling speed and maintain more grain number per spike were identified as two important traits for achieving higher grain yield under late-season heat stress conditions.
Azam Fatemi; payam moaveni; Jahanfar Daneshian; hamid mozaffari; Mehdi Ghaffari
Articles in Press, Accepted Manuscript, Available Online from 14 March 2021
Abstract
In order to investigate the effect of Magnesium nanoparticle spraying solution on some morphophysiological traits of sunflower under experimental drought conditions as split split plot in a randomized completely block design in three replicates at the field of oilseed section of seed and plant Improvement ...
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In order to investigate the effect of Magnesium nanoparticle spraying solution on some morphophysiological traits of sunflower under experimental drought conditions as split split plot in a randomized completely block design in three replicates at the field of oilseed section of seed and plant Improvement , during 2017-2019 growing season. The treatments including Drought stress at two levels: Normal irrigation and drought stress, Sunflower cultivars studied including: Farrokh, Shams , Qasem & Barzegar, and Magnesium nanoparticles application time at Three Levels: No spraying solution, Spraying at Flowering stage and Grain Filling stage. The results showed that drought stress reduced the amount of traits including: height, shoot dry weight, number of grains per head, 1000 grain weight, head diameter, grain yield, oil percentage and oil yield but Magnesium nanoparticle spraying solution improved the drought stress effect and increased morphological traits. Drought stress increased electrolyte leakage index and decreased relative water content of leaves by 13 and 9 percent, respectively. But magnesium nanoparticles decreased the content of electrolyte leakage index by 9 percent and increased relative leaf water content by10 percent. The response of cultivars to stress levels was not the same and in general, Barzegar, Shams, Qasem and Farrokh cultivars showed the highest tolerance to drought stress, that way, the highest grain yield and oil percentage being related to Barzegar cultivar by 3427.53 kg/h and 43.96 percent, respectively.
Siavash Heshmati; Gholam Akbari; Majid Amini Dehaghi; Kayvan Fathi Amirkhiz; Keyvan Maleki
Articles in Press, Accepted Manuscript, Available Online from 28 March 2021
Abstract
In order to study the foliar application of melatonin on plants grown from safflower in different seed quality under drought condition, two field experiments were carried out at research farm of Aburaihan Campus, University of Tehran in 2017 and 2018 growing seasons. The experimental design was split-factorial ...
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In order to study the foliar application of melatonin on plants grown from safflower in different seed quality under drought condition, two field experiments were carried out at research farm of Aburaihan Campus, University of Tehran in 2017 and 2018 growing seasons. The experimental design was split-factorial in a randomized complete block design with four replicates. The treatments consisted of two levels of drought stress (1- normal irrigation (no-stress) and 2- irrigation after reaching 85% of soil moisture depletion of field capacity at flowering stage (drought stress)) were randomized to the main plots. Subplots were 4 treatments in number and consisted of a factorial combination of seed quality (stored seed and recently harvested seeds) and foliar application (1-control and, 2- melatonin foliar application). The results illustrated that the SOD and CAT activity were increased in response to melatonin in plants grown from recently harvested seeds under drought condition. Furthermore, it indicated that foliar application of melatonin decreased the amount of leaf soluble proteins by 28 % in plants grown from recently harvested seeds under drought condition. The results showed that the amount of malondialdehyde decreased by 37% in plants grown from recently harvested seeds by foliar application of melatonin under drought condition. It seems that the seed quality has a great influence on grown plants and, also using melatonin may play a substantial role in ameliorating the injuries derived from stress on safflower plant.
Saeid Naservafaei; Yousef Sohrabi; Parviz Moradi
Articles in Press, Accepted Manuscript, Available Online from 02 April 2021
Abstract
This study was conducted to investigate the effect of Brassinosteroid on some physiological traits, yield components and grain yield and oil of Dragon’s head under deficit irrigation conditions. The experiment was conducted as split-plot based on a randomized complete block design with three replications ...
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This study was conducted to investigate the effect of Brassinosteroid on some physiological traits, yield components and grain yield and oil of Dragon’s head under deficit irrigation conditions. The experiment was conducted as split-plot based on a randomized complete block design with three replications during 2016-2017 and 2017-2018 in the research farm of Agricultural Research and Training Center and Natural Resources of Zanjan province. Experimental treatments include deficit irrigation (normal or control irrigation, irrigation cut-off from the beginning of flowering to the end of maturity, irrigation cut-off from the beginning of branching (emergence of the sixth pair of main stem leaves to physiological maturity) in main and foliar spraying with Brassinosteroid with concentrations of 0.5, 1.5, 1.5 μM and control were applied in sub plots. The results showed that irrigation cut-off from the beginning of branching caused a decrease in total chlorophyll content (42.8%), number of capsules per plant (62.7%), number of grain per plant (66.1%), 1000-seed weight (22.3%), biological and seed yield (62.1%), harvest index (30.8%) and oil yield (75.1%). Foliar application with Brassinosteroids only significantly increased the leaf total chlorophyll concentration and grain oil percentage under different levels of irrigation cut-off stress. There was statistically significant difference between foliar application levels with Brassinosteroids for leaf total chlorophyll concentration and seed oil percentage traits. There is a need for complementary researches to prove the effectiveness of foliar application with this growth regulator to improve growth and yield of Dragon’s head under deficit irrigation conditions.
Mohammad Yazdandoost Hamedani; Mokhtar Ghobadi; Mohammad Eghbal ghobadi; Saeid Jalali Honarmand; mohsen saeidi
Articles in Press, Accepted Manuscript, Available Online from 07 April 2021
Abstract
In order to evaluate the effect of foliar application of some chemicals on antioxidant enzymes activity and chlorophyll fluorescence of sunflower in different irrigation conditions and to identify compounds effective in reducing the adverse effects of drought stress, this experiment was conducted at ...
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In order to evaluate the effect of foliar application of some chemicals on antioxidant enzymes activity and chlorophyll fluorescence of sunflower in different irrigation conditions and to identify compounds effective in reducing the adverse effects of drought stress, this experiment was conducted at the Agricultural Research Center of Hamedan, Iran, during two years (2015-16). Three irrigation and six foliar application treatments were evaluated in a split plot experiment based on randomized complete block design with three replications. Irrigation treatments consisted of 60, 80 and 100% plant water requirement and foliar application treatments included: abscisic acid 40 M, Selenium 20 mg/L, Salicylic acid 500 M, SNP 100 μM, Glycine betaine 100 mM and control. The results showed that with irrigation water decreasing, the activity of superoxide dismutase, peroxidase and catalase enzymes increased significantly, while the maximum photochemical efficiency of photosystem II and grain yield decreased. The interaction effect of irrigation × foliar application on the activity of antioxidant enzymes and grain yield was significant and on chlorophyll fluorescence was not significant. In deficit irrigation treatments, foliar application of all chemical compounds significantly increased the activity of antioxidant enzymes compared to control treatment. Application of salicylic acid increased the maximum photochemical efficiency of photosystem II and grain yield, at all irrigation conditions. Under 60, 80 and 100% irrigation conditions, salicylic acid application increased grain yield by 24.3, 10.1 and 4.9% respectively.
Rahim Naseri; Amir Mirzaei; Amin Abbasi
Articles in Press, Accepted Manuscript, Available Online from 07 April 2021
Abstract
in order to investigate the effect of inoculation with mycorrhizl fungi on the grain yield and gas exchange of barley cultivars in rainfed conditions, a field experiment was carried out in factorial arrangment using randomized complete block design with three replications at the farm station of Sarablah ...
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in order to investigate the effect of inoculation with mycorrhizl fungi on the grain yield and gas exchange of barley cultivars in rainfed conditions, a field experiment was carried out in factorial arrangment using randomized complete block design with three replications at the farm station of Sarablah Agricultural Research Center during 2019-2020 cropping season. Experimental treatments including factor of barley cultivars (Mahali, Mahoor, Khoram and Fardan) and fertilizer sources treatment including: control (without fertilizer source), 50% P fertilizer, mycorrhizal fungus (Glomus mosseae, Glomus etunicatum and Rhizophagus irregularis), mycorrhizal fungi + 50% P chemical fertilizer and 100% P chemical fertilizer. The results of this study showed that the interaction effect of cultivar ×fertilizer sources were significant on dry matter remobilization efficiency from spike, Contribution of spike reserves to grain yield, dry matter remobilization efficiency from stem, contribution of stem reserves to grain yield, current photosynthesis rate, contribution of current photosynthesis and grain filling rate. So that the interaction betwen Fardan cultivar× mycorrhizal fungi + 50% P chemical fertilizer had the highest dry matter remobilization effeciency from spike, contribution of spike reserves to grain yield, current photosynthesis rate, contribution of current photosynthesis and grain filling rate. In this study, the highest dry matter remobilization effeciency from stem, contribution of stem reserves to grain yield was obtained from the interaction of Mahali cultivar×control treatment.
Abdollah Hasanzadeh Gorttapeh; Saeid Heydarzadeh; Amir Rahimi
Articles in Press, Accepted Manuscript, Available Online from 08 April 2021
Abstract
Amaranthus is one of the forage plants resistant to environmental stresses. This experiment conducted 2 years in form of a complete random block design based on factorial a with three replications, 3 levels of irrigation (irrigation after depleting 40, 60 and 75% of available water) as the first factor ...
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Amaranthus is one of the forage plants resistant to environmental stresses. This experiment conducted 2 years in form of a complete random block design based on factorial a with three replications, 3 levels of irrigation (irrigation after depleting 40, 60 and 75% of available water) as the first factor and organic (cow manure and phosphate-2), chemical (phosphorus and nitrogen), integrated and control (no fertilizer) fertilizer systems including was the second factor. The results of this study showed that crude protein, digestibility of dry matter, water-soluble carbohydrates, digestible nutrients, relative nutritional value and specific energy of lactation, due to the application of different fertilizer systems in each irrigation level were improved compared to of non-consumption of fertilizer. The performance of biomass and forage protein were increased by 38.89 and 54.37%, 30.60 and 41.23% and 22.20 and 34.92% in optimal, moderate and severe stress conditions respectively in integrated fertilizer system than the control treatment. The results of this study showed the use of organic fertilizers alone or combined with chemical fertilizers improved quantitative and qualitative traits of amaranthus forage irrigation after depleting 40 and 60% of available water. So, optimal use of biological inputs for sustainable agriculture and reduction of pollution caused by the use of chemical fertilizers is recommended.
alireza khodashenas
Articles in Press, Accepted Manuscript, Available Online from 27 April 2021
Abstract
In order to evaluation of grain yield of wheat cultivars in two planting dates and determination of proper cultivars for autumn and entezari culture, a study was carried out during two years 2015-2017 in Torogh research station in Mashhad. Tow planting dates of autumn and entezari culture were main plot ...
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In order to evaluation of grain yield of wheat cultivars in two planting dates and determination of proper cultivars for autumn and entezari culture, a study was carried out during two years 2015-2017 in Torogh research station in Mashhad. Tow planting dates of autumn and entezari culture were main plot and 16 genotypes of wheat (14 cultivars and 2 promising lines) and include of Baran, Rasad, Sardari, Sabalan, Crosssabalan, Rijav, Karim, Koohdasht, Dehdasht, Azar2, Homa, Ohadi, Ghaboos and Aftab cultivars were subplot. Results showed that significant difference exist between cultivars in terms of agronomic characteristics and grain yield. Flowering date of cultivars was different and none of cultivars didn’t start flowering in the optimum temperature range for flowering. Cultivars of Karim and Rijav with mean yield of 1430 and 1326 kg/ha, respectively had the maximum yield and cultivars of Ohadi and Rasad with mean yield of 893 and 925 kg/ha, respectively had the minimum yield, the difference between maximum and minimum grain yield was about 60%. Delay in planting leads to delay in pollination in all cultivars, therefore autumn planting date could be recommendable. Also for autumn planting, cultivars of Karim and Rijav can be advised and for entezari planting date only spring cultivars such as Karim and Aftab are recommended.
Atefeh Sadat Mousavi; Masoumeh Naeemi; ali Rahemi karizaki; Abdolatif Gholizadeh
Articles in Press, Accepted Manuscript, Available Online from 27 April 2021
Abstract
In order to investigate the effect of chitosan and salicylic acid elicitors on osmotic adjustment and some physiological traits of Hyssop under experimental drought conditions, in a split plot design with randomized complete block design with Three replications at research farm of Gonbad Kavous University ...
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In order to investigate the effect of chitosan and salicylic acid elicitors on osmotic adjustment and some physiological traits of Hyssop under experimental drought conditions, in a split plot design with randomized complete block design with Three replications at research farm of Gonbad Kavous University during 2018-2019. Irrigation factor at three levels including seven, 14 and 21 days’ irrigation interval as main factor and four levels of spraying including no elicitor (control treatment, spraying), salicylic acid (300 mg. l-1), Chitosan spraying (5 g. l-1) and the combination of salicylic acid and chitosan were considered as auxiliary agents. Results of analysis of variance showed that the interaction between spraying and irrigation had significant effects on ion leakage, chlorophyll a content, soluble sugar and malondialdehyde content but was insignificant on carotenoid and essential oil yield. spraying of salicylic acid and with 17% reduction in ion leakage and 40% reduction in plant malondialdehyde compared to the control increased the stability of cell membranes under 21-day irrigation stress. In the same treatment, chitosan increased the amount of photosynthetic pigments and total chlorophyll by 51% compared to the control. According to the results, salicylic acid and Chitosan were able to increase the ability of hyssop in response to water deficit stress by activating different tolerance mechanisms.
Seyed Basir Mousavi; Saeed Sayfzade; Hamid Jabbari; alireza valadabadi; Esmaeil Hadidi Masouleh
Articles in Press, Accepted Manuscript, Available Online from 29 April 2021
Abstract
This study was conducted to evaluate the effect of auxin foliar application in two safflower cultivars under drought stress condition using a factorial split plot experiment with randomized complete block design in two years (2017-2018 and 2018-2019). This experiment evaluated irrigation at two levels ...
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This study was conducted to evaluate the effect of auxin foliar application in two safflower cultivars under drought stress condition using a factorial split plot experiment with randomized complete block design in two years (2017-2018 and 2018-2019). This experiment evaluated irrigation at two levels including normal irrigation and interruption of irrigation from the beginning of grain filling stage (drought) in the main plots and cultivars of Padideh and Goldasht and auxin foliar application in two levels of non-foliar application of distilled water (control) and foliar application of auxin (indole acetic acid) in one step (mid-flowering) at a concentration of 3000 mg.l-1 were assigned in sub-plots as a factorial. In the auxin foliar application and non-foliar application (control) in both normal irrigation and drought stress treatments, the highest total number of heads per plant in Goldasht cultivar were 26.3 and 24.3 respectively, and the highest grain number per plant observed in Goldasht cultivar were at 708 and 592, respectively. Auxin foliar application and irrigation had no significant effect on the grain oil percentage. Goldasht cultivar had a higher grain yield compared to Padideh cultivar due to lower head temperature, higher soluble carbohydrate concentration, number of heads and 1000-grain weight. Generally, results showed that the effect of the studied treatments was affected by the year and despite the positive effect of auxin foliar application on some yield components at both irrigation levels, foliar application of auxin at middle of flowering stage had no significant effect on grain yield.
mohammad kaveh; mohammad ali esmaili; Hemmatollah Pirdashti; Mohammad Reza Ardakani
Articles in Press, Accepted Manuscript, Available Online from 19 May 2021
Abstract
In this study, the effect of combined application of biochar, Azospirillium lipofrom bacteria and nitrogen in two flooding and intermittent irrigation methods on yield and yield components of rice (Oryza sativa L. cv. ‘Tarom Hashemi’) was investigated. This experiment was done in split-split ...
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In this study, the effect of combined application of biochar, Azospirillium lipofrom bacteria and nitrogen in two flooding and intermittent irrigation methods on yield and yield components of rice (Oryza sativa L. cv. ‘Tarom Hashemi’) was investigated. This experiment was done in split-split plot arrangement based a complete randomized block design with three replications at the research farm of Sari Agricultural Sciences and Natural Resources University in the two consecutive years of 2017 and 2018. The treatments were two irrigation methods (flooding and alternation irrigation regimes) as main plot and nine fertilizers levels (100, 75 and 50% nitrogen in combination with control (without biochar), 20 and 10 tons of biochar per hectare) and seedling inoculation with Azospirillum lipoferum (inoculation and non-inoculated control) considered as sub and sub sub plots, respectively. Accordings to the significance of the studied factors effects on the measured traits, application of 20 tons of biochar along with 75 to 100% of the recommended nitrogen showed the greatest impact on rice yield and yield components in both intermittent and flooding irrigation methods. Since, the effectiveness of biochar in imtermittent irrigation was more significant; therefore, it can be concluded that the application of 20 tons of biochar per hectare plus 75 to 100% of the recommended nitrogen could greatly compensate the yield reduction due to reduced water consumption in intermittent irrigation as compared to the flooding irrigation.
Sara Baniebrahimi; Leila Pishkar; Alireza Iranbakhsh; Daryush Talei; Giti Barzin
Articles in Press, Accepted Manuscript, Available Online from 19 May 2021
Abstract
In order to investigate the physiological responses of black cumin seed (Nigella sativa L.) under different concentrations of silver nanoparticles (0, 2.5, 5, 10, 20, 40 and 80 mg/L AgNPs), a completely randomized design experiment was conducted with 5 replications in the greenhouse of Shahed University ...
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In order to investigate the physiological responses of black cumin seed (Nigella sativa L.) under different concentrations of silver nanoparticles (0, 2.5, 5, 10, 20, 40 and 80 mg/L AgNPs), a completely randomized design experiment was conducted with 5 replications in the greenhouse of Shahed University in 2018. In the present study, growth traits, photosynthetic pigments, anthocyanins, proline content, glycine betaine, soluble and insoluble sugars, phenolic compounds and gas exchange and fluorescence parameters of the photosynthetic apparatus were investigated. The results showed that the AgNPs treatments significantly inhibited biomass production and the growth of root and shoot, and decreased the contents of chlorophyll a and b at high concentrations (20, 40 and 80 mg/L), while the AgNPs treatments increased the content of carotenoids, proline, glycine betaine, soluble sugars, anthocyanins and phenolic compounds compared to control treatment. By increasing the concentration of AgNPs, photosynthetic rate, transpiration rate, stomatal conductance, the maximal quantum yield of PSII photochemistry, photochemical quenching coefficient and effective quantum yield of PSII photochemistry declined. Measurements of fluorescence showed strong evidence of inhibitory effects on energy transfer from light harvesting complexes to reaction centers, the deterioration of the PSII water splitting system and the inactivation of PSII reaction centers at high concentrations of AgNPs. In conclusion, the results demonstrated that AgNPs induced an inhibitory mechanism on photosynthetic processes and biomass of black seed plants.
siavash aryafar; Alireza Sirousmehr; Iesa khammari; Ahmad ghanbari; Esmaeil Seyedabadi
Articles in Press, Accepted Manuscript, Available Online from 19 May 2021
Abstract
In order to investigate the effect of tillage systems and the combination of chemical fertilizer and livestock manure on some characteristics of sunflower, an experiment was conducted as split plots in a randomized complete block design with three replications at the research farm of Zabol University ...
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In order to investigate the effect of tillage systems and the combination of chemical fertilizer and livestock manure on some characteristics of sunflower, an experiment was conducted as split plots in a randomized complete block design with three replications at the research farm of Zabol University in 2019. The main factor was tillage levels (1-reversible plow and disc, 2-sweep and disc, and 3-disc). The sub-factor included fertilizer levels (no fertilizer application, 100 kg/ha of diammonium phosphate, 25 tons/ha of livestock manure + 100 kg/ha of diamonium phosphate, 50 tons/ha of livestock manure + 100 kg/ha of diamonium phosphate, 25 tons/ha of livestock manure, 50 tons/ha of livestock manure). The results showed that the highest values were obtained from the 50 tons/ha of livestock manure in tillage with disk for grain yield (5072 kg/ha), and oil percentage (44.44 percent), 50 tons/ha of livestock manure in tillage with disc for oleic acid content (51.61 percent), and 50 tons/ha of livestock manure for linoleic acid content (31.1 percent). The highest amount of chlorophyll a, b and carotenoids (1.253, 0.45 and 1.04 mg/g, respectively) was obtained from the application of 100 kg/ha of diamonium phosphate in tillage with disc. In general, in order to increase and improve the quantitative and qualitative characteristics of sunflower, the application of 50 tons/ha of livestock manure was suitable in disc tillage conditions.
ahmad zare; aydin khodaeaei; zienab khezrepoor
Articles in Press, Accepted Manuscript, Available Online from 19 May 2021
Abstract
In order to evaluate chia (Salvia hispanica L) to temperature, under abiotic stresses (salinity and drought) three separate experiments were carried out in the laboratory of Agricultural Sciences and Natural Resources University of Khuzestan in four replications in 2018. Treatments included temperature ...
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In order to evaluate chia (Salvia hispanica L) to temperature, under abiotic stresses (salinity and drought) three separate experiments were carried out in the laboratory of Agricultural Sciences and Natural Resources University of Khuzestan in four replications in 2018. Treatments included temperature (5, 10, 15, 20, 25, 30, 35, 40 and 45 °C), salinity (0, 50, 100, 150, 200, 250, 300, 350 and 400 mM) and drought stress (-0.2, -0.4, -0.6, -0.8, -1, 1.2 and 1.4 MPa). In response to temperature, chia was able to germinate in the range of 10 to 40 °C. The base temperatureو, optimum temperature and ceiling temperature were predicted 6, 28 and 44°C respectively. Germination percentage and germination rate decreased in response to salinity and at salinity 400 mM, germination was completely inhibited. Salinity 50% reduction (X50) in germination percentage and germination rate obtained at salinity 349 and 236 mM. 50% reduction in germination percentage and germination rate was observed at -0.92 and -0.79 MPa of drought stress. According to x50 parameter, chia is resistant to salinity and drought stresses. In conditions of saline soils and drought stress, chia can be recommended to farmers for cultivation.
Ghobad Mohamadpoor; salim farzaneh; SAEID KHOMARI; Raouf Seyed sharif; behrooz esmaie;pour
Articles in Press, Accepted Manuscript, Available Online from 19 May 2021
Abstract
This study was conducted to investigate the effect of application of humic acid and seaweed extract on morphology, growth, yield and yield components of quinoa under drought stress in 2018-2019 in two different locations, Qasr Shirin and Dalahou. This study was performed as split plots with a randomized ...
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This study was conducted to investigate the effect of application of humic acid and seaweed extract on morphology, growth, yield and yield components of quinoa under drought stress in 2018-2019 in two different locations, Qasr Shirin and Dalahou. This study was performed as split plots with a randomized complete block design with 4 replications. Experimental treatments include three irrigation treatments (full irrigation, irrigation cut- off at the beginning of flowering and irrigation cut- off at the beginning of seed growth) and foliar spraying treatments with different amounts of humic acid and seaweed extract along with a control treatment. The results showed that seed yield in Dalahou region under no drought stress was 24.78% higher than Qasrshirin region. Seed yield in different irrigation treatments under the influence of foliar application showed that in all irrigation treatments, the effect of foliar application of humic acid and algae extract on seed yield was positive compared to the control. In full irrigation conditions, the highest seed yield was obtained by foliar application of humic acid, while in irrigation cut-off treatments, the effect of seaweed extract on seed yield was better than humic acid. The results showed that the weight of 1000 seeds in quinoa produced in Dalahu region was more than Qasrshirin region but in both regions drought stress caused a decrease in 1000 weight seeds. In all irrigation treatments, application of humic acid and algae extract increased 1000-seed weight.
Saeed Sharafi
Articles in Press, Accepted Manuscript, Available Online from 19 May 2021
Abstract
Therefore, the aim of this experiment was the investigation of different irrigation levels based on the water requirement of sorghum (Sorghum bicolor L.) on the qualitative and quantitative yield of forage produced by combined cropping patterns of sorghum and snail medic (Medicago scutellata L.). The ...
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Therefore, the aim of this experiment was the investigation of different irrigation levels based on the water requirement of sorghum (Sorghum bicolor L.) on the qualitative and quantitative yield of forage produced by combined cropping patterns of sorghum and snail medic (Medicago scutellata L.). The experiments were conducted in split plots design based on randomized complete blocks with three replications in two years (2017-2018 and 2018-2019). The treatments were included, the irrigation levels of 50, 75, 100, and 125 percent (as the main plot) and cropping patterns sole-cropping sorghum, sole-cropping snail medic, the cropping pattern of 100 percent sorghum with additive series of 50, 75, and 100 percent snail medic (as the subplot). The results showed that the highest fresh and dry forage yield was obtained in 125 percent water requirement and 100 percent sorghum 100 percent snail medic (with 53578.45 and 13302.68 kg ha-1). In addition to the effective application of land (land equivalent ratio = 1.29), fresh and dry forage yields were increased by 834 and 63.36 kg ha-1, respectively. The analysis of forage quality showed that with a decrease in the portion of the snail medic, the percentage of protein 11.05 percent decreased. Also, the highest percentage of crude ash and digestible matter in the treatment of sorghum sole cropping (11.79 and 81.04 percent, respectively) and the highest percentage of acid detergent fiber in the treatment of snail medic sole cropping (30.94 percent) were recorded. ,The uses of the crop like snail medic increases water productivity.
Somaye Amraee Tabar; Ahmad Ershadi
Articles in Press, Accepted Manuscript, Available Online from 23 May 2021
Abstract
In this study, the drought tolerance threshold and relationships between some biochemical and physiological responses of two stone fruit rootstocks, Cadaman and GF677, were investigated. For this purpose, an experiment has been done using factorial trial based on a completely randomized design with three ...
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In this study, the drought tolerance threshold and relationships between some biochemical and physiological responses of two stone fruit rootstocks, Cadaman and GF677, were investigated. For this purpose, an experiment has been done using factorial trial based on a completely randomized design with three replications. One-year-old rooted cuttings of two rootstocks were exposed to drought stress (-0.1 (control), -0.6, -1.1, -1.6 MPa) by adding different amounts of polyethylene glycol-6000 to Hoagland nutrient solution. Significant increase in electrolyte leakage and decrease in leaf relative water content of Cadaman and GF677 rootstocks occurred at -0.6 and -1.1 MPa, respectively. Concentration of photosynthetic pigments and quantum yield of photosystem II (FV/FM) were less affected by drought stress and decreased significantly in Cadaman and GF677 rootstocks at -1.1 and -1.6 MPa, respectively. Under severe drought stress, photosynthesis, transpiration, intercellular CO2 concentration and stomatal conductance in Cadaman rootstock were more considerably decreased, compared to GF677. Moreover, at drought stress of -1.6 MPa, GF677 did not significantly reduced its photosynthesis, despite a substantial decrease in transpiration; however, the relative decrease in photosynthesis of Cadaman at -1.6 MPa was much greater than the relative decrease in its transpiration and intercellular CO2 concentration, which, in turn, resulted in a decrease in water use efficiency and mesophilic conductance of Cadaman leaves, compared to GF677. It seems that considerable reduction in photosynthesis in Cadaman rootstock, along with stomatal limitations, is largely due to non-stomatal constraints such as loss of cell membrane intact and reduction of chlorophyll, carotenoids and chlorophyll fluorescence
dalir fayazipour; Gholam Ali Akbari; Iraj Allah dadi; fatemeh amini; Marjan Alsadat Hoseinifard
Articles in Press, Accepted Manuscript, Available Online from 26 May 2021
Abstract
This study aimed to evaluate the effects of planting date and spraying CCC on some biochemical characteristics and qualitative and quantitative yield of sugar beet. Therefore, the experiment was conducted using a Split factorial based on randomized complete block design with three replications in 2015-2016 ...
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This study aimed to evaluate the effects of planting date and spraying CCC on some biochemical characteristics and qualitative and quantitative yield of sugar beet. Therefore, the experiment was conducted using a Split factorial based on randomized complete block design with three replications in 2015-2016 growth season in field experiment of university of Abourayhan, Tehran University. Treatment were planting date (2 October and 22 October) as the main factor and cultivars (Suprima and 9597) and foliar spraying (1000 ppm) / non-application of CCC as sub plots. The results showed that the highest percentage of bolting (54.58%) and sodium content (equivalent to 9.16 mEq / 100 g of sugar beet pulp) were observed in 2 October and the highest root yield (26.15 ton per hectare) and white sugar yield (equal to 1.44 tons per hectare) were obtained in 22 October. Also, it was observed that most values of studied traits (except bolting percentage and sodium content of sugar beet pulp), were occurred by the cultivation of Suprema with CCC spraying. overall, the conclusion that the treatments, the best conditions to determine the best root and sugar yield in the area of research, the date of 22 October, the Suprima and application of 1000 ppm and recommended in order to cultivate of sugar beet in the Pakdasht area.
ali akbar azizizohan; abdolmajid liaghat; Mehdi Shahabifar; Seyed Alireza Seyed jalali
Articles in Press, Accepted Manuscript, Available Online from 27 May 2021
Abstract
The Potential Climatic Water Productivity(PCWP) is an important indicator to quantify the effect of intrinsic factors on physical water productivity. The crop calendar is one of the important factors affecting this index. Considering the importance of maize farming and the necessity of improving water ...
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The Potential Climatic Water Productivity(PCWP) is an important indicator to quantify the effect of intrinsic factors on physical water productivity. The crop calendar is one of the important factors affecting this index. Considering the importance of maize farming and the necessity of improving water productivity, PCWP index was investigated for eight agronomic calendars and five maize farms in the 2015 -16. Crop calendars were extracted from available official sources and expert meetings. The PCWP components were determined from the FAO Growth Model(yield) and the standard FAO Penman-Monteith method(evapotranspiration). The mean PCWP for maize forage in the second crop cultivation increased by 23 percent as compared to the first cultivation, therefore, the use of second cultivation calendars is recommended in regard to the promoting water productivity. In spite of a 13.7 percent increase in PCWP in the second maize-grain cultivation, the use of the first cultivation calendars is recommended. Due to changes in water productivity(WP) and its components, water allocation and irrigation scheduling based on ETc appropriate to the crop calendar is essential. However, WP based ETc and actual yield are not appropriate for correct comparison, analysis and crop calendar selection, so it is necessary to use PCWP values based on climatic potential production (CPP) under water conditions (IPP) and ETc .
mrs Somayeh Mirzaei; Seyed Ataollah Siadat; Babak pakdaman sardrod,; Mohammad Moradi Telavat
Articles in Press, Accepted Manuscript, Available Online from 27 May 2021
Abstract
In order to investigate the effect of Piriformospora indica and different levels of salicylic acid on morphological characteristics and activity of antioxidant enzymes of thyme (Thymus vulgaris L.) irrigation cut-off stress, an experiment has been conducted in the water year 2016, which has employed ...
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In order to investigate the effect of Piriformospora indica and different levels of salicylic acid on morphological characteristics and activity of antioxidant enzymes of thyme (Thymus vulgaris L.) irrigation cut-off stress, an experiment has been conducted in the water year 2016, which has employed a split factorial experiment based on randomized complete block design with four replications in the research farm of dehloran Agricultural Research Center. The treatments consisted of four levels of salicylic acid (0, 150, 300 and 600 μm) as foliar application and a mycorrhiza fungus agent at two levels of inoculation and non-inoculation and irrigation cut-off stress at three levels (irrigation at 90, 50 and 30% filed capacity). The results of this study showed that with increasing irrigation cut-off stress up to 30% filed capacity plant height, Total weight of shoot, Number of leaves, Colonization percentage, and also the enzymes Catalase and Peroxidase Decreased. inoculation and treatment with salicylic acid up to a concentration of 300 μM could significantly reduce the destructive effects of irrigation cut-off stress on these traits However, increasing the concentration of salicylic acid to the level of 600 μM intensified the effects of irrigation cut-off stress and prevented the positive effects of the fungus.
Raouf Seyed sharif; reza seyed sharifi; Hamed Narimani
Articles in Press, Accepted Manuscript, Available Online from 02 June 2021
Abstract
In order to study the effect of methanol and seed inoculation with plant growth promoting rhizobacteria on grain filling components, chlorophyll content and grain yield of safflower (Carthamus tinctorius L.) under various irrigation levels, a factorial experiment was conducted based on randomized complete ...
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In order to study the effect of methanol and seed inoculation with plant growth promoting rhizobacteria on grain filling components, chlorophyll content and grain yield of safflower (Carthamus tinctorius L.) under various irrigation levels, a factorial experiment was conducted based on randomized complete block design with three replications at the research farm of University of Mohaghegh Ardabili in 2020. The experimental factors were included irrigation (full irrigation as control, irrigation withholding at 50% heading-bud and flowering stages), biofertilizers application (no application as control, seed inoculation with Flavobacterium, Pseudomonas and both application of Flavobacterium and Pseudomonas), methanol foliar application: (foliar application with water as control and foliar application 10 and 20% volume of methanol). The results showed that chlorophyll content a (41.57%), b (74.59%) and total chlorophyll (49.33%), grain filling period and effective grain filling period (27.32 and 72.89% respectively) and grain yield (69.2%) increased under full irrigation condition, foliar application 20% volume of methanol and both application of Flavobacterium with Pseudomonas in comparison with irrigation withholding at 50% heading-bud and no application of biofertilizers and methanol. It seems that application of plant growth-promoting bacteria and methanol can increase grain yield of safflower due to improving chlorophyll content and grain filling components under water limitation condition.
Mohammad-Tayyeb Bayazidi-Aghdam; Jalal Jalilian; hamid Mohammadi
Articles in Press, Accepted Manuscript, Available Online from 02 June 2021
Abstract
One of the most important goals of cultivating medicinal plants is to improve their essential oil content, which will be affected by environmental factors such as water deficit stress and nutritional stress conditions. In this regard, three years split plot study were done as a randomized complete block ...
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One of the most important goals of cultivating medicinal plants is to improve their essential oil content, which will be affected by environmental factors such as water deficit stress and nutritional stress conditions. In this regard, three years split plot study were done as a randomized complete block design with three replications in Urmia University at the 2014-2017 cropping years. The main factors include irrigation regimes in three levels (normal irrigation, supplementary irrigation and rainfed conditions), and the sub-factor at six levels included fertilizer resources {biofertilizer (Azotobaror 1 + Phosphate-Barvar 2), complete chemical fertilizer and complete Nano fertilizer with and without vermicompost. Sampling and analysis of traits were done in the cropping year 2016-2017 (third year of planting). Compared to normal irrigation, the results showed that supplementary irrigation and rainfed treatments while reducing the concentration of nitrogen (14.94 and 7.72%), phosphorus (31.20 and 37.71%), potassium (11.58 and 9.14%), copper (14.27 and 28.96%) and total dry weight (33.22 and 56.14%), but increased the concentration of iron (8.08 and 66.05%), zinc (16.82 and 7.16%) and essential oil yield (25.32 and 37.11%) of thyme, respectively. Combined application of nano fertilizer with vermicompost under normal irrigation conditions, and application of nano fertilizer in supplementary and rainfed irrigation conditions led to improved essential oil yield by 2.7, 3.39 and 3.78%, respectively. In general, the improvement of essential oil yield in water deficit stress, during the application of nano fertilizer, indicates the efficiency of this fertilizer in providing nutrients and achieving sustainable agricultural goals.
Sevda Ghasemi Germi; morteza Barmaki; salim farzaneh; Mandana Amiri
Articles in Press, Accepted Manuscript, Available Online from 06 June 2021
Abstract
AbstractThis study aimed to investigate the morpho-physiological responses of potato superelite mini-tubers to different coating treatments factorial experiment based on randomized complete block design with three replications in Research Farm of Mohaghegh Ardabili University in 2018-19. Experimental ...
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AbstractThis study aimed to investigate the morpho-physiological responses of potato superelite mini-tubers to different coating treatments factorial experiment based on randomized complete block design with three replications in Research Farm of Mohaghegh Ardabili University in 2018-19. Experimental factors at four levels included mini-tubers filler (zeolite and cocopeat), superphosphate (soil and pellet application), chitosan, and superabsorbent with control treatment (without pelleting). Application of cocopeat with superphosphate leads to the highest average number of tubers per plant (8.36), fresh and dry tuber yield (18.23 and 3.88 tons per hectare), and biological yield (21.69 tons per hectare). The use of chitosan in mini-tuber pelleting decreased the activity of catalase and peroxidase enzymes (19.67 and 16.37%, respectively) and increased the activity of polyphenol oxidase (37.80%). Zeolite increased and cocopeat decreased the tuber protein percentage compared to the control. This increase in protein percentage with increasing tuber yield led to a 32.23% increase in tuber protein yield in zeolite application compared to control treatment. The use of superphosphate in mini-tuber pelleting also increased the protein percentage and thus led to a 30.30% increase in protein yield compared to control mini-tuber. In principal component analysis (PCA), the first component, with which 35% of the changes could be explained, included the yield of protein, lysine, and methionine, and the second component, with which 25% of the changes could be explained, included the protein, methionine, lysine and total nitrogen were included.
Ali Yazdan panah gohari; Marzieh Ghanbari Jahromi; Vahid Zarrin nia
Articles in Press, Accepted Manuscript, Available Online from 06 June 2021
Abstract
Mycorrhiza is a common group of microorganisms that can establish symbiotic relationships with plants. To evaluate symbiosis and compatibility between a collection of chicory seeds and mycorrhizal fungi, through inoculation, a factorial experiment was set up in a randomized complete block design. Two ...
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Mycorrhiza is a common group of microorganisms that can establish symbiotic relationships with plants. To evaluate symbiosis and compatibility between a collection of chicory seeds and mycorrhizal fungi, through inoculation, a factorial experiment was set up in a randomized complete block design. Two batches of chicory seed (Ardabil and Fars) were inoculated by two species of mycorrhizal fungi (Glomus mosseae and Glomus intraradices). The control group of seeds were not inoculated. Three replicates were arranged in a greenhouse. The research was aimed at examining how the two species of mycorrhizal fungi affect several plant traits and the amounts of phytochemical compounds (i.e. phenol, flavonoids, antioxidant activity, chlorophyll a and b, total chlorophyll), fresh and dry weights of roots and root length, as well as the ability of chicory roots to absorb several elements. The results showed that seed batch and mycorrhizal fungi have significant effects on vegetative traits, chlorophyll content, phenol, total flavonoids and antioxidant activity in plants. The highest amounts of total phenol production (3.77 mg/g fresh weight), total flavonoids (1.21 mg/g fresh weight), antioxidant activity (5.23 mg/g fresh weight), root growth and chlorophyll content were observed in the Ardabil batch when treated with G. intraradices. The two batches of seeds grew into plants with different growth rates and phytochemical compositions. The growth parameters of plants improved in the case of mycorrhizal inoculation. The effects of G. intraradices were more efficient than those of G. mosseae in symbiosis with chicory plants.
sara Najafi; Issa Khammari; ahmmad ghanbari; mahdi dahmard
Articles in Press, Accepted Manuscript, Available Online from 10 June 2021
Abstract
Additive intercropping series of sunflower and basil were laid out under salty and fresh water irrigation management. The aim was to achieve the highest yield and intercropping advantage as a result of intercropping the two plants. An experiment was performed at Zabol University during two cropping years ...
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Additive intercropping series of sunflower and basil were laid out under salty and fresh water irrigation management. The aim was to achieve the highest yield and intercropping advantage as a result of intercropping the two plants. An experiment was performed at Zabol University during two cropping years (2018 and 2019). Fresh water (ECe = 3.9 dS.m-1) and saline water (ECe = 1.1 dS.m-1) were taken from the Hirmand River and a local well, respectively. The irrigation water regimes were fresh water, salt water, and an alternating usage of salty and fresh irrigation water. In addition, five types of intercropping patterns were considered as sub-factors (100 percent sunflower (4 plants/m2), 100 percent basil (80 plants/m2), 100 percent sunflower + 50 percent basil, 50 percent sunflower + 100 percent basil and 100 percent sunflower + 100 percent basil. The results showed that the interaction between intercropping patterns and different irrigation regimes had a significant effect on 1000 seed weight, seed yield, harvest index, oil yield of sunflower, dry weight and essential oil yield of basil plants. In response to all irrigation regimes, the highest value of total land equivalent ratio (1.37-1.45) and intercropping advantage (0.29 - 0.48) occurred as a result of cultivating 50 percent sunflower + 100 percent basil, thereby appearing as a good model of intercropping. The results showed that intercropping patterns can be effective in modulating the negative effects of saline irrigation water on plant yield.
Masoud Lakzaei; Ali Nakhzari Moghaddam; Mehdi Mollashahi; Abbas Biabani
Articles in Press, Accepted Manuscript, Available Online from 10 June 2021
Abstract
In order to investigate the effect of planting pattern and nitrogen and megafol on grain yield, yield components and seed protein of chickpea (Cicer arietinum L.) under rainfed conditions, a factorial experiment was conducted in a randomized complete block design with three replications in Gonbad Kavous ...
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In order to investigate the effect of planting pattern and nitrogen and megafol on grain yield, yield components and seed protein of chickpea (Cicer arietinum L.) under rainfed conditions, a factorial experiment was conducted in a randomized complete block design with three replications in Gonbad Kavous University farm during growth season of 2017-2018. The planting pattern was in three levels of 30×11, 45×7.4 and 60×5.5 cm (30 plants. m-2) and the factor of use of fertilizers in five levels of non-consumption and consumption of 50 and 100 kg nitrogen and one and two liters of megafol per hectare. The results showed that the highest seed yield was related to 30×11 and 45×7.4 and the lowest was related to 60×5.5 cm. Seed per plant and seed yield in application of 100 and 50 kg N ha-1 was higher than others. The highest and the lowest protein percentage of seeds was related to 60×5.5 and 30×11 cm. 1000-seed weight in application of 100 and 50 kg N ha-1 and 2 liters of megafol was more than other treatments. The harvest index in application of fertilizer was the maximum and in treatment of non-application of fertilizer was the minimum. In addition, because of more effect of nitrogen on seed yield compared to megafol and non-significant differences between consumption of 100 and 50 kg N ha-1, it seems that consumption of 50 kg N ha-1 and planting pattern of 30×11 is the most appropriate advice for planting of rainfed chickpea in Gonbad Kavous condition.
peyman sharifi; Fatemeh Benakashani; Iraj Allah dadi; Gholam Akbari
Articles in Press, Accepted Manuscript, Available Online from 10 June 2021
Abstract
To evaluate the effect of living mulches on weed control and yield of Black cumin (Nigella sativa L.) weeds by living mulch, a factorial split experiment was conducted in the form of a randomized complete block design with four replications in the research farm of Aburaihan Campus, the University of ...
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To evaluate the effect of living mulches on weed control and yield of Black cumin (Nigella sativa L.) weeds by living mulch, a factorial split experiment was conducted in the form of a randomized complete block design with four replications in the research farm of Aburaihan Campus, the University of Tehran in the 2017-2018 crop year. Factors of seedbed planting (stale seedbed and simple), type of living mulch (berseem clover (Trifolium alexandrinum L.), fenugreek (Trigonella foenum-graecum L.) and alfalfa (Medicago sativa L.), planting time of living mulch (two weeks before and at the same time of black seed cultivation). The first factor was in the main plots and the combination of the second and third factors was in the subplots. The results showed that fenugreek and alfalfa were more successful in terms of weed control than clover with a 40% reduction in weed density and biomass compared to the control without live mulch and without weeding. Also, in order to achieve the highest percentage of black cumin yield traits (83.02, 93.44 and 50.50), the number of capsules per plant, number of seeds per capsule and 1000-seed weight, respectively, compared to the control without living mulch and complete weeding, respectively. It is recommended to cultivate fenugreek at the same time as black cumin. In the case of alfalfa, pre-sowing is also recommended. Stale seedbed planting system did not play a positive and significant role in weed control and increase in black seed yield traits.
Hamed Narimani; Raouf Seyed sharif; fatemeh aghaei
Articles in Press, Accepted Manuscript, Available Online from 17 June 2021
Abstract
In order to study the effect of foliar and soil application of Zinc on grain weight and some biochemical traits of wheat (Triticum aestivum L.) under soil salinity, an experiment was conducted as factorial based on randomized complete block design with three replications in research greenhouse of University ...
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In order to study the effect of foliar and soil application of Zinc on grain weight and some biochemical traits of wheat (Triticum aestivum L.) under soil salinity, an experiment was conducted as factorial based on randomized complete block design with three replications in research greenhouse of University of Mohaghegh Ardabili in 2018-2019. Experimental factors were: soil salinity levels [control and salinity 30, 60, and 90 mM] and four methods of application of zinc [no zinc as control, soil application zinc as ZnSO4, foliar application nano zinc oxide and combined soil and foliar application of zinc]. The results showed that the both application ZnSo4 and foliar application nano Zn oxide under 90 mM soil salinity condition increased significantly 20.24, 17.68, 13.16, 32.88 and 14.08% of catalase and peroxidase enzymes activity, anthocyanin, proline and soluble sugars content respectively in comparison with no application of zinc under 90 mM soil salinity condition. Also, both soil application ZnSo4 and foliar application nano Zn oxide under non-salinity condition decreased hydrogen peroxide and malondialdehyde content in comparison with no application of Zinc under 90 mM soil salinity. Both soil application ZnSo4 and foliar application nano Zn oxide under non-salinity condition had the highest grain weight (1.016 g per plant) compared to the application of this treatment combination at other salinity levels. It seems that both application of ZnSo4 and nano Zn oxide can increase weight yield of wheat under salinity condition due to improving biochemical traits.
alireza mohseni; Raouf Seyed sharif; saeid khomari
Articles in Press, Accepted Manuscript, Available Online from 17 June 2021
Abstract
In order to study the effect of bio fertilizers and putrescine on yield and some traits of wheat (Triticum aestivum L. (at various irrigation levels, a factorial experiment was conducted based on randomized complete block design with three replications at the research farm of University of Mohaghegh ...
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In order to study the effect of bio fertilizers and putrescine on yield and some traits of wheat (Triticum aestivum L. (at various irrigation levels, a factorial experiment was conducted based on randomized complete block design with three replications at the research farm of University of Mohaghegh Ardabili, during 2018-2019. Factors were included irrigation (full irrigation as control, irrigation withholding in 50% of heading and booting stages), bio fertilizers (no bio fertilizer, application of mycorrhiza, both application Psedomunas and Flavobacterim, application of mycorrhiza with Psedomunas and Flavobacterim) and putrescine foliar application (foliar application with water as control, foliar application 0.5 and 1 mM of putrescine). Means comparison showed that maximum of relative water content of flag leaf; chlorophyll index, stomatal conductance and quantum yield were obtained in full irrigation, application of mycorrhiza with Psedomunas and Flavobacterim and foliar application 1 mM of putrescine. Foliar application 1 mM of putrescine increased grain yield of about 8.5% in comparison with no application putrescine. Also, the highest grain yield (799.44 and 746.38 g.m-2) were obtained with both application Psedomunas and Flavobacterim, both application of mycorrhiza with Psedomunas and Flavobacterim respectively under full irrigation conditions and the lowest it (403.42 g.m-2) was obtained in under irrigation withholding in booting stage, no application of bio fertilizer. It seems that application of putrescine and bio fertilizers can increase grain yield of wheat under water limitation conditions due to improving some physiological traits.
Mostafa Ebrahimikia; Matin Jami Moeini; Hamid Marvi; Yousef Hasheminejhad; Mohammad Ghasemzadeh Ganjehie
Articles in Press, Accepted Manuscript, Available Online from 17 June 2021
Abstract
To investigate the effects of row spacing and nitrogen application rate on growth and yield of quinoa, a split plot experiment was conducted in a randomized complete block design with three replications in Sabzevar during 2018. The factors studied were row spacing at three levels (25, 50 and 75 cm) and ...
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To investigate the effects of row spacing and nitrogen application rate on growth and yield of quinoa, a split plot experiment was conducted in a randomized complete block design with three replications in Sabzevar during 2018. The factors studied were row spacing at three levels (25, 50 and 75 cm) and nitrogen application rate at four levels (0, 50, 100, and 150 kg N ha-1). The results showed that the highest content of photosynthetic pigments, panicle length, number of seeds per plant and biological yield were obtained by 150 kg N ha-1 treatment. However, the 100 kg N ha-1 treatment had the highest number of panicles per plant (19.24) and 1000-seed weight (3.51 g). Increasing row spacing increased chlorophyll contents, plant height, number of panicles, panicle length and number of seeds per plant, but decreased 1000-seed weight, seed yield and biological yield. The decrease in seed yield by increasing the row spacing to 50 and 75 cm was 18.62 and 50.14%, respectively. The highest seed yield (6644.5 kg ha-1) was produced with application of 150 kg N ha-1 at a row spacing of 25 cm. With increasing row spacing, nitrogen requirement to produce maximum seed yield decreased, so that the highest seed yield in 75, 50 and 25 cm rows spacing were produced with the application of 50, 100 and 150 kg N ha-1, respectively. According to the results, the application of 150 kg N ha-1 and row spacing of 25 cm is recommended for planting quinoa, Sajama genotype.
Abdolshakoor Raissi; Fatemeh Nosrati; Hossein piri
Articles in Press, Accepted Manuscript, Available Online from 17 June 2021
Abstract
The use of different nutritional sources is one of the effective ways to maintain soil quality and improve the quantitative and qualitative yield of plants. The aim of this study was to investigate the effect of organic, biological and chemical fertilizers on some quantitative and qualitative traits ...
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The use of different nutritional sources is one of the effective ways to maintain soil quality and improve the quantitative and qualitative yield of plants. The aim of this study was to investigate the effect of organic, biological and chemical fertilizers on some quantitative and qualitative traits in Isabgol medicinal plant in 2018-19 crop year in a randomized complete block design with 6 treatments and 4 replications in Iranshahr. Fertilizer treatments were: Vermicompost (10 tons per hectare), Animal manure (20 tons per hectare), Phosphate Barvar 2 biofertilizer (100 g/ha), Phosphate Barvar 3 biofertilizer (100 g/ha), Superphosphate triple (50 Kg/ha) and no fertilizer application (control). The results showed that the effect of fertilizers on most of the studied traits was significant at the 1% level. The effect of treatments on plant Height and Carbohydrates was not significant and on Inflation index and Chlorophyll number were significant at 5% level. Maximum number of tillers per plant, number of spikes, spike length, fresh weight of plant, swelling index, Carbohydrate, Nitrogen, Potassium and Chlorophyll number were obtain under the influence of manure, and traits including root length, plant height, number of seeds per spike, dry weight Plant, 1000-seed weight, plant yield, yield per hectare, mucilage, protein, chlorophyll a, chlorophyll b and total chlorophyll were obtained under the influence of Vermicompost. Also, control treatment and Phosphate Barvar 2 biofertilizer had the highest swelling and the highest percentage of phosphorus, respectively.
Mahmood Moradi Chegeni; Ahmad Ali Shoushi Dezfuli; Mahmood Tohidi; Mehdi Sadeghi; Farbod Fotouhi
Articles in Press, Accepted Manuscript, Available Online from 10 July 2021
Abstract
One of the important activities to achieve drought tolerant cultivars is screening and selection of cultivars based on yield and biochemical characteristics. A split-plot experiment arranged in a randomized complete blocks design with three replications was carried out in Safiabad Agricultural Research ...
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One of the important activities to achieve drought tolerant cultivars is screening and selection of cultivars based on yield and biochemical characteristics. A split-plot experiment arranged in a randomized complete blocks design with three replications was carried out in Safiabad Agricultural Research Center during two growing seasons (2017-19). Main plots consisted of different irrigation regimes based on crop’s water requirement (25%, 50%, 75% and 100%) and sub plots included five levels of alfalfa cultivars (Baghdadi, Nikshahri, Yazdi, Omid and american Mesa-Sirsa). Results showed that drought stress due to irrigation regimes led to significantly reduce of forage dry matter yield and significantly changes of soluble sugar, glutation peroxidase and catalase in alfalfa leaves but it did not have significantly effect on total protein. For forage dry matter yield, the highest statistical class belonged to Baghdadi cultivar under 100% water requirement supply treatment (2.824 t.ha-1). The lowest statistical class for forage dry matter yield was observed in Yazdi and Mesa-Sirsa cultivars under 25% water requirement supply treatment (0.598 and 0.546 t.ha-1), respectively. Among the cultivars that are examined in this experiment, Yazdi was identified as a drought tolerant cultivar due to the stability of dry forage yield and also high leaf antioxidants content.
Mehdi Esmaeiltabar; Faezeh Zaefarian; Shahram Nazari; Rahmat Abbasi
Articles in Press, Accepted Manuscript, Available Online from 10 July 2021
Abstract
In order to investigate the effect of different weed control managements on emergence characteristics and morphological growth of rice seedlings in seedling stage in direct seeding system, an experiment was conducted in 2020 growing season. The experiment was performed as a factorial in a randomized ...
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In order to investigate the effect of different weed control managements on emergence characteristics and morphological growth of rice seedlings in seedling stage in direct seeding system, an experiment was conducted in 2020 growing season. The experiment was performed as a factorial in a randomized complete block design with three replications. Factors included Shiroudi, Khazar and Hashemi cultivars as well as various weed control managements. Coating the seeds with calcium chloride, potassium chloride and weeding were able to reduce the dry weight of grasses, respectively 54.60, 68.02 and 84.68% in Shiroudi cultivar, 78.53, 62.94 and 53.53% in Khazar cultivar and also 29.67, 57.86% and 34.71% in Hashemi cultivar compared to the control. The highest percentage of germination with 99.33, 97.67 and 94.67% was obtained under the seed coatings with potassium chloride, calcium chloride and weeding in Shiroudi cultivar, respectively. The highest germination rate was observed in potassium and calcium chloride seed coating treatments and weeding. The lowest density of broadleaf weeds with 0.91 plants m-2 was obtained in Shiroudi cultivar and by managing the seeds coating of this cultivar with calcium chloride. The highest seedling length and weight vigor indices were obtained with 3559 and 1362.62 in Shiroudi cultivar under weeding management, respectively. The results showed that seed coating improves the seed yield of rice cultivars.
sayyed-pooya hosseini; soudabeh golestani kermani; kourosh qaderi; nasrin sayari
Articles in Press, Accepted Manuscript, Available Online from 10 July 2021
Abstract
The experiment was carried out as a factorial based on completely randomized design during spring of 2019 in the research greenhouse of Shahid Bahonar University of Kerman. The research factors included 3 irrigation levels Fc100, Fc75 and Fc50 (100, 75 and 50 percent field capacity) as the first factor ...
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The experiment was carried out as a factorial based on completely randomized design during spring of 2019 in the research greenhouse of Shahid Bahonar University of Kerman. The research factors included 3 irrigation levels Fc100, Fc75 and Fc50 (100, 75 and 50 percent field capacity) as the first factor and two superabsorbent levels S0 and S5 (0 and 5 gr/kg soil) as a second factor which was done with five replications. The results showed that the maximum yield (40. 23 ton/ ha) and water productivity (10.36 kg/m^3) were observed in FC100S5 treatment which increased by 5.71 and 47.6 percent respectively, compared to the values recorded in similar level of irrigation and non-superabsorbent polymer. The maximum value of total chlorophyll (25.12 mg/ml) were observed in FC100S5 treatment which increased by 19.44 percent compared to the control treatment. The maximum value of vitamin c was observed in FC100S0 treatment which was 18.27 percent higher than minimum recorded value. Finally, the results showed that difference between irrigation water production of cherry tomato in FC100S0 and FC75S5 is not significant, despite 25% reduction in field capacity moisture at FC75S5. According to the results of this research, the quadratic production function is recommended as the optimal function for estimating the mentioned traits in terms of application and non- application of super absorbent.
Mohsen Seilsepour
Articles in Press, Accepted Manuscript, Available Online from 10 July 2021
Abstract
To evaluate the effect of different application methods of humic acid and aminochelate (Foliar application and soil application) on growth and yield of greenhouse-cucumber (Cucumis sativus. L), an experiment research at greenhouse for two years was carried out with three replications with randomized ...
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To evaluate the effect of different application methods of humic acid and aminochelate (Foliar application and soil application) on growth and yield of greenhouse-cucumber (Cucumis sativus. L), an experiment research at greenhouse for two years was carried out with three replications with randomized complete block design with factorial arrangement, with three levels of humic acid (no humic acid, soil humic acid and leaf-spray humic acid) and three levels of aminocelate (without aminochelate application, soil aminoclate application and leaf aminochelate application). The effect of humic acid application and the effect of amino acid application on fruit yield per unit area, number of fruits per plant, fruit dry matter percentage and leaf chlorophyll index were significant. Also, the effect of humic acid application, the effect of amino acid application and the interaction effect of humic acid and amino acid application on the concentration of nutrients consumed and low leaf consumption were significant. The highest mean fruit yield per unit area was obtained from the application of humic acid soil at 28.7 kg / m2, which increased yield by 24.7% compared to the control treatment (without using humic acid and aminoclate). According to the results, to achieve maximum yield per unit area, use of humic acid and aminocelate in soil were recommended.
Razieh Assadi; Mostafa Darvishnia; Mehdi Nasr Esfahani; Eidy Bazgir; Samira Pakbaz
Articles in Press, Accepted Manuscript, Available Online from 19 July 2021
Abstract
One of the most important pathogens in plants including pomegranate, are root-knot nematodes (Meloidogyne spp.) causing considerable damage to this important export product. Due to the importance of the subject which was done in 2018- 2019 in the Faculty of Agriculture of Lorestan University, studies ...
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One of the most important pathogens in plants including pomegranate, are root-knot nematodes (Meloidogyne spp.) causing considerable damage to this important export product. Due to the importance of the subject which was done in 2018- 2019 in the Faculty of Agriculture of Lorestan University, studies with treatments including organic fertilizer (40, 60 and 80 t/ha.), vermicompost (40 t/ha.) and Marygld product (200, 300 and 400 g/m2) were done in a completely random design on the dominant root-knot nematodes species, M. javanica under greenhouse conditions on pomegranate seedlings. The measurement indicators included gall index, the number of egg sacs and the final population of egg and J2 larvae in the soil and the roots, and growth factors of pomegranate seedlings. Reproduction factor and the percentage of increase or decrease of root knot nematode population, were calculated in each treatment compared to the initial population of the same treatment. The results showed vermicompost (40 t/ha.) with 94.35 percent reduction in population of egg and larvae had the highest effect on reducing the nematode population compared to the other treatments. Marygld 400, 300 and 200 g/m2 treatments were ranked next by 93.47, 91.21 and 92.65 percent reduction in nematode population respectively and then the nematode reduction in the composts of 80, 60 and 40 t/ha by 89.67, 86.55 and 86.81 percent respectively.
Babak Darvishi; Mehrdad Eshghi; Sarhad Bahrami; Hamid Nasiri; Rahmat Azad; Atefe Khandan; Rahman Bakhtar; abbas Norouzi
Articles in Press, Accepted Manuscript, Available Online from 19 July 2021
Abstract
Value for Cultivation and Use (VCU) test is performed by Seed and Plant Certification and Registration Institute (SPCRI) or its legal representative according to articles 17-24 of second part of the executive regulations of the law on Registration of Plant Varieties. In this regard, in order to value ...
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Value for Cultivation and Use (VCU) test is performed by Seed and Plant Certification and Registration Institute (SPCRI) or its legal representative according to articles 17-24 of second part of the executive regulations of the law on Registration of Plant Varieties. In this regard, in order to value for cultivation and use test of two imported chickpea cultivars (Araz and Goksu), an experiment set up based on complete randomized block design in three replications and four locations (Oshnavieh, Moghan, Saral and Kamyaran) during 2018-2019 and 2019-2020 . Results showed that the amount of chickpea seed yield in Oshnavieh location (temperate cold rejoin) was significantly higher than other studied locations (3365.5 kg.ha-1). Due to the significant interaction of cultivar × location on seed yield, different cultivars had the highest yield in different locations. The highest 100 seed weight belonged to Araz (39.11 gr), Goksu (37.04 gr) and Saeed (36.22 gr) cultivars. Goksu had the highest height of first pod (21.59 cm) and then came Hashem (20.13 cm), Araz (19.43 cm), Saeed (19.02 cm) and Mansour (18.08 cm). Goksu, Mansour and Saeed cultivars had longest physiological maturity period. The physiological maturity period in Araz and Areman cultivars was significantly shorter than the other studied cultivars. Araz and Goksu cultivars are considered as two suitable chickpea germplasm for cultivation in Iran due to their higher yield, higher 100 seed weight and higher first pod height.
Nikrooz Shirinzadeh; Mohammad Hassan Biglouei; Karamat Akhavan; Adel Mohammadi
Articles in Press, Accepted Manuscript, Available Online from 29 July 2021
Abstract
In order to investigate the effect of deficit irrigation on quantitative and qualitative characteristics of wheat (Triticum asetivum L.) Morvareed cultivar, an experiment with three main treatments including surface drip irrigation (TS), subsurface drip irrigation (TSS) and Furrow irrigation (F), and ...
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In order to investigate the effect of deficit irrigation on quantitative and qualitative characteristics of wheat (Triticum asetivum L.) Morvareed cultivar, an experiment with three main treatments including surface drip irrigation (TS), subsurface drip irrigation (TSS) and Furrow irrigation (F), and three submain treatments containing irrigation levels 50 (I1), 75 (I2) and 100 (I3) percent of the plant water requirement was carried out in the research farm of Ardebil Agricultural Research and Training Center in Moghan region during 2016-2017. The experiment was conducted as split plot based on randomized complete blocks design with three replications. The results showed that the highest 1000-grain weight, harvest index and number of tillers per unit area were obtained with 0.05 kg, 42% and 448.56 in I3 and protein content with 9.56% in I1, respectively. Also, the highest grain yield (7122.33 kg ha-1) was obtained from the TS with irrigation level of I3 (no significant difference between I3 and I1) and the highest water productivity based on grain yield with 1.81 kg m-3 was obtained from the treatment of F with I1. The lowest grain yield with 2866.67 kg ha-1 and water productivity based on grain yield with 1.05 kg m-3 were obtained from the F with irrigation levels of I1 and I3, respectively. Therefore, the surface drip (TS) with 75 percent (I2) and 100 percent (I3) of crop water requirement in conditions of water deficiency and no-water-deficiency, respectively can be considered as optimum methods to the wheat production in the Moghan region.