Mohammad Taghi Darzi; Mohammadreza Haj Seyed Hadi
Abstract
To study the effects of organic and bio-fertilizers on quantity and quality of essential oil of dragonhead (Dracocephalum moldavica L.), an experiment was conducted as randomized complete blocks design with eight treatments and three replications at agricultural research field of the Company of Ran in ...
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To study the effects of organic and bio-fertilizers on quantity and quality of essential oil of dragonhead (Dracocephalum moldavica L.), an experiment was conducted as randomized complete blocks design with eight treatments and three replications at agricultural research field of the Company of Ran in Firouzkuh of Iran during the growing season of 2014-2015. The treatments were 20 t/ha manure, 10 t/ha vermicompost, biofertilizer (2 lit/ha nitroxin + 2 lit/ha bio-superphosphat), 10 t/ha manure + 5 t/ha vermicompost, 20 t/ha manure + biofertilizer, 10 t/ha vermicompost + biofertilizer, 10 t/ha manure + 5 t/ha vermicompost + biofertilizer and chemical fertilizer (NPK: 80, 70 and 80 kg/ha). The results have shown that the highest essential oil percent, essential oil yield, geraniol percent and linalool percent were obtained in essential oil at the treatment of application of 10 t/ha vermicompost and the maximum geranial percent, neral percent and neryl acetate percent were observed in essential oil at the treatment of integrated application of 10 t/ha vermicompost and biofertilizer. Also, the highest geranyl acetate percent was obtained in essential oil at the treatment of chemical fertilizer application (control). Generally, the highest percent and yield of essential oil and essential oil quality were obtained using 10 t/ha vermicompost application.
Hossein Ghane; Hossein Amirshekari; Amir mohammad Naji
Abstract
In order to study the effects of planting date and seed priming on yield and physiological traits of two cumin ecotypes, an experiment was conducted as factorial experiment based on randomized complete blocks design with three replications in the 2014-15 crop season at field research of medicinal plants, ...
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In order to study the effects of planting date and seed priming on yield and physiological traits of two cumin ecotypes, an experiment was conducted as factorial experiment based on randomized complete blocks design with three replications in the 2014-15 crop season at field research of medicinal plants, Shahed University. The factors were priming with two levels of control and osmopriming (KCL 4%), planting date with three levels of 25 February, 10 March and 25 March and ecotype with two levels of Neishabour and Sabzevar. The results showed that the interaction between priming and planting date and ecotype on seed number per plant grain yield and biological yield significant in statistical level of 5%, while the number of lateral branches and umber number per plant were significant in statistical level of 1%. There was a reduction on grain yield and biological yield due to delay in planting date from 10 Mar. to 25 Mar. Application of osmopriming led to a significant increase in percentage and yield of essential oil in Sabzevar ecotype. The chemical components of essential oils significantly decreased by delay in sowing date. Generally, cultivation of Sabzevar ecotype on 25 February lead to best quality and quantity in yield.
Amir Hajjarpoor; Habibolah Kashiri
Abstract
In this study, collecting of management information from about 700 wheat farms in Golestan province was conducted during two growing seasons of 2013-2014 and 2014-2015. In each of region, potential yields, the optimum crop management and simultaneously the percentage of wheat farms out of the optimal ...
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In this study, collecting of management information from about 700 wheat farms in Golestan province was conducted during two growing seasons of 2013-2014 and 2014-2015. In each of region, potential yields, the optimum crop management and simultaneously the percentage of wheat farms out of the optimal ranges were identified in both irrigated and rainfed conditions using boundary line analysis. To do this, the information was analyzed in three parts of irrigated, high- and low-yield rainfed conditions. By plotting farm’s yield data scatter, against management factors, highest yields in different levels of input or management factors were selected and a boundary function was fitted to the upper boundary of data points. According to the results, potential yield for irrigated, high- and low-yield rainfed wheat were estimated equal to 6816, 5791 and 3932 kg ha-1 with a yield gap of 42, 31 and 50 percent, respectively. The optimum ranges of sowing date, seeding rate, plant density, frequency and the amount of nitrogen fertilizer applied, the amount of nitrogen applied after sowing, the amount of phosphorus (P2O5) and potassium fertilizers (K2O) applied and irrigation frequency were determined according to the results. Consider the optimum managements, farmers in each region can shrink the yield gap and reach potential yield result in increasing the amount of wheat production in Golestan province.
Mohammad Safari; Masoud Arghavani; Azizolah Kheiri
Abstract
This experiment was conducted in order to investigate the morphological and physiological responses of vetiver grass (Chrysopogon zizanioides L. Roberty), to water deficit stress and salicylic acid application at Department of Horticultural Sciences, University of Zanjan in 2015. After 6 months of planting ...
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This experiment was conducted in order to investigate the morphological and physiological responses of vetiver grass (Chrysopogon zizanioides L. Roberty), to water deficit stress and salicylic acid application at Department of Horticultural Sciences, University of Zanjan in 2015. After 6 months of planting transplants into pots, three soil available water levels (40, 70 and 100%) and salicylic acid concentrations (0, 1 and 2 mili Molar) were applied in a factorial experiment based on completely randomized design with three replications for six weeks. Salicylic acid applied through foliar spray weekly. Generally, water deficit reduced root and shoot dry weight and leaf chlorophyll content. Root length, total phenol, proline and electrolyte leakage of leaves were increased by reducing the amount of available water. Salicylic acid application improved negative effects of water deficit in all attributes and its effect was more pronounced in 40% available water treatment. In all available water levels, there was no significant difference between 1 and 2 mili Molar salicylic acid treatments in root dry weight and leaves total phenol whereas in other factors. 2 mili Molar salicylic acid application had better result and plants in this treatment had higher shoot dry weight, proline and chlorophyll content and less electrolyte leakage than 1 mili Molar salicylic acid treatment, suggesting that in order to increase water deficit tolerance of vetiver grass, higher concentration of this plant growth regulator must be evaluated.
Malihe Akrami Abarghoei; Abdolrahman Mohammadkhani; Gholamreza Rabiei
Abstract
In order to evaluate the effect of some bio-stimulators on yield and fruit quality of apricot cv. ‘Shekar pareh’ management functions were studied in the spring of 2014 in Abarkouh of Yazd province. The experiment was based on randomized complete blocks design with seven nutritional treatments ...
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In order to evaluate the effect of some bio-stimulators on yield and fruit quality of apricot cv. ‘Shekar pareh’ management functions were studied in the spring of 2014 in Abarkouh of Yazd province. The experiment was based on randomized complete blocks design with seven nutritional treatments included control (water spraying), humic acid one and two per thousand, aminol forte three and six per thousand and humi forte 0.5 and 1 per thousand in four replications. Bio stimulators were applied just spray twice during the growth period including two weeks after full bloom and a month after it. Results showed that the bio-stimulators effects significantly affected the measured traits except for the titratable acidity (based on malic acid), firmness and maturity index. Humic acid treatment reduced physical properties, total soluble solids and vitamin C. Aminol Forte with three per thousand concentrations increased most of the physical and chemical characteristics, but three per thousand to six per thousand concentrations had the effect of decreasing. Humi forte also increases fruit's carotenoid and vitamin C. Therefore, it seems that between treatments, aminol forte bio-stimulator enhanced yield and improve the quality of apricot fruit. Therefore, it can be recommended to spraing of aminol forte with three per thousand concentrations at the suitable time.
Zahra Rezaei; Mohammad Rafieolhosseini; Abdolrahman Mohammadkhani
Abstract
In order to evaluate the effect of manure and super absorbent polymer on some morphological characteristics and fennel (Foeniculum vulgar Mill) essential oil production under drought stress conditions, an experiment was conducted as spilt-plot in a randomized complete block design with three replications ...
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In order to evaluate the effect of manure and super absorbent polymer on some morphological characteristics and fennel (Foeniculum vulgar Mill) essential oil production under drought stress conditions, an experiment was conducted as spilt-plot in a randomized complete block design with three replications at University of Shahrekord in 2015. The main factor was different levels of drought stress including three levels of control (50 mm), moderate stress (100 mm) and severe stress (150 mm) evaporation from class. A pan and sub-factor was considered different ratios of animal manure and super absorbent polymer in six levels (D1: lack of manure and super absorbent polymer, D2: 25% manure + 75% super absorbent polymer, D3: 50% manure + 50% super absorbent polymer, D4: 75% manure + 25% super absorbent polymer, D5: 100% manure (40 t.ha-1) and D6: 100% super absorbent polymer (200 Kg.ha1)). The results showed that the maximum number of umbel, grain yield (146.66 g/m2), harvest index and essential oil yield (2.99 g/m2) from control treatment and D6, the maximum number of lateral branch, floret and plant dry weight (165.62 g/m2) from control treatment and D4 and the maximum thousand seed weight and plant fresh weight, from control treatment and D3 and D2 were obtained, respectively. The maximum essential oil percentage (3.09) was obtained from severe stress and D5 treatment. The maximum plant height and number of main branch was obtained from D6 and D4 treatments, respectively and under control conditions. Since the superabsorbent polymer while reducing the effects of drought, increased grain yield, harvest index and oil yield of fennel, thus, control treatment with 100% super absorbent polymer consumption can be offered to maximize grain and essential oil yield under the same conditions.
Khodabakhsh Goodarzvand Chegini; Reza Fotovat; Mohammad Reza Bihamta
Abstract
In order to evaluate the effect of drought stress on morphological, physiological and agronomical charactristice of tolerant, semi-tolerante and sensitive chickpea genotypes, a greenhouse exprimemt was conducted as factorial based on completely randomized design with three replications. The first factors ...
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In order to evaluate the effect of drought stress on morphological, physiological and agronomical charactristice of tolerant, semi-tolerante and sensitive chickpea genotypes, a greenhouse exprimemt was conducted as factorial based on completely randomized design with three replications. The first factors included of no water deficit stress, mild stress and sever stress and second factor included of 11 genotypes. Analysis of variances results indicated significant effect of genotype factor between all the traits exept relative water content and all intractions of genotype irrigation were significant except root dry weight, shoot dry weight, root diameter, shoot length and primary branch numbers. The greatest percentage of trait changes belonged to shoot dry weight, shoot fresh weight and biological yields in high drought stress and the lowest percentage of trait changes belonged to rate of water lost. The tolerant genotype of Fars shahpoor-3659 with low canopy temperature had the highest root fresh weight, shoot fresh weight and shoot length under non stress conditions and the sensitive genotype of Fars shahpoor-3723 with high canopy temperature had low biomass yields, root fresh weight, shoot fresh weight and shoot dry weight which showed reduction of root diameter, primary branch numbers and relative water content under high stress, too. Thus, these two genptypes could be used as indexes for identification of tolerant and sensitive varirties in later experimets.
Omid Sadeghipour
Abstract
In order to investigate the role of methyl jasmonate on salinity tolerance of cowpea, a factorial pot experiment was conducted in the basis of completely randomized design with three replications in the Rey region in 2015. Treatments included three levels of seed soaking in methyl jasmonate solution ...
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In order to investigate the role of methyl jasmonate on salinity tolerance of cowpea, a factorial pot experiment was conducted in the basis of completely randomized design with three replications in the Rey region in 2015. Treatments included three levels of seed soaking in methyl jasmonate solution (0, 25 and 50 µM) for 20 hours and three levels of salinity (0, 50 and 100 mM NaCl). The results showed that by increasing salinity levels, lipids peroxidation, antioxidant enzymes activity (superoxide dismutase, catalase, ascorbate peroxidase and glutathione reductase) and Cl- concentration in the leaves increased, while the concentration of N, Ca2+ and Mg2+ decreased as well as K+/Na+ ratio. These changes eventually led to decreasing seed yield. Seed treatment with methyl jasmonate had not significantly effect on any measured traits under normal conditions, however this treatment (especially 50 µM) under salinity stress conditions caused further activity of antioxidant enzymes, declining lipids peroxidation, reducing the concentration of Cl- in the leaves, increasing the concentration of N, Ca2+ and Mg2+ as well as K+/Na+ ratio, and finally improved seed yield. These findings suggest that methyl jasmonate plays a pivotal role in inducing salinity tolerance of cowpea plants via enhancing antioxidant enzymes activity and altering nutrients composition.
Fariba Rezaei Aderyani; Ayatollah Rezaei; Yavar Sharafi
Abstract
Salinity is one of the most important plant growth limiting factors, which using the anti-stress materials is considered as an important approach in moderating its effects on plants. In this research, the date plum seedlings response to salinity stress and two compounds putrescine and chitosan to reduce ...
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Salinity is one of the most important plant growth limiting factors, which using the anti-stress materials is considered as an important approach in moderating its effects on plants. In this research, the date plum seedlings response to salinity stress and two compounds putrescine and chitosan to reduce salinity stress was studied. The experiment was conducted as a factorial with three levels of sodium chloride (0, 30 and 60 mM), and five treatments of control, putrescine (1 and 2 mM) and chitosan (0.25 and 0.5%), based on a completely randomized design with four replications at Shahed University in 2016. The results showed that date plum was sensitive to salt stress in the early stages of growth and sodium chloride salinity stress resulted in significant decrease in vegetative traits such as fresh matter weight and length of shoots and roots as well as leaf chlorophyll content in compared to 0 salinity. In addition, the leaf blight percentage, sodium content, electrolyte leakage and malondialdehyde content were increased in plants treated with salinity. Putrescine treatment, especially at 2 mM concentration effectively reduced the effects of salinity on date plum seedlings and improved vegetative growth of stem and root, while chitosan had no significant effect in reducing the harmful effects induced by salt stress in this experiment. According to the results, Diospyros lotus seedlings were sensitive to salinity and using treatments such as putrescine is effective in increasing its resistance to salinity stress.
Zeinab Fathi Manesh; Abdolhossein Rezaie Nejad; Sadegh Mosavi Fard; Gholamhasan Veikarami
Abstract
In order to evaluate the adaptation and ornamental potential of Allium spp endemic to Iran, an experiment was conducted in Agricultural Research Station of Lorestan University under Khorramabad climatic conditions during 2014-2015. A completely randomized design was used for the experiment with 21 treatments ...
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In order to evaluate the adaptation and ornamental potential of Allium spp endemic to Iran, an experiment was conducted in Agricultural Research Station of Lorestan University under Khorramabad climatic conditions during 2014-2015. A completely randomized design was used for the experiment with 21 treatments (species-location) with three replications. Phonological and morphological characteristic at growth stage was recorded. Analysis of variance showed significant (p<0.01) differences among species on all traits indicating genetic diversity of the studied species. Cluster analysis and principle component analysis were used to assess the ornamental potential of the studied species and the most important ornamental characteristics i.e. scape length, the diameter of the inflorescence, flower longevity and flower color were evaluated. Biplot were depicted on the basis of both the first and second component that showed 54% of variations. In the biplot and cluster analyses, the species were placed into distinct groups associated with their potential ornamental value. According to the results, Allium iranicum collected from the Alborz-Dizin with large inflorescence (63.28 mm), beautiful flower color (purple) and being green in winter, and Allium oschaninii species collected from Khorasan-Chenaran with great flower longevity (54 d), beautiful form and large scape length (95 cm) were identified as good potent ornamental species.
Darioush Ramezan
Abstract
In order to study the effect of grafting on growth and fruit quality of melon under deficitirrigation the experiment was conducted as a split plot in a randomized complete block design with three replications during 2014 on the experimental farm of Imam Khomeini Higher Education center of Jihad-e-Keshawarzi ...
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In order to study the effect of grafting on growth and fruit quality of melon under deficitirrigation the experiment was conducted as a split plot in a randomized complete block design with three replications during 2014 on the experimental farm of Imam Khomeini Higher Education center of Jihad-e-Keshawarzi in Karaj. Treatments consisted arrangement of four grafting (melon grafted on Shintozwa and Ferro-RZ, self grafted and ungrafted melon) and three irrigation levels 60, 80 and 100 percent, based on total available water depletion. The mean comparision showed that maximum (25.54 mg/g FW) and minimum (16.98 mg/FW) sucrose content of fruits was obtained in non-grafted plants under irrifation 80% and Souski Zard grafted on Souski Zard in irrigation 60% respectively. Also, the maximum (13.2%) and minimum (8.48%) of soluble solids was related to fruit of non-grafted plants under 80% irrigation level and non-grafted plants in irrigation 60%, respectively. The highest (7.58) and the lowest (5.29) learn points by the jury (panel test) related to fruit quality were irrigation 80 and 60 percent respectively. Also, there was no signifincant difference between deficit irrigation 80% and irrigation 100% in terms of total phenol content of fruit. The results showed that the fruit harvested from Soski Zand plant grafted on Shintozwa had better quality compared to control plants under deficit irrifation.
S. Javad Talebzadeh; Hashem Hadi; Reza Aminia; Mehdi Tajbakhsh; Mohammad Rezaie
Abstract
In order to evaluation the pattern of assimilates distribution to seed under late season drought stress, 11 promising lines of winter wheat along with Orum, Zareh, Mihan, Zarrin and Pishgam cultivars were evaluated in two levels of irrigation (full irrigation and cutting irrigation from flowering to ...
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In order to evaluation the pattern of assimilates distribution to seed under late season drought stress, 11 promising lines of winter wheat along with Orum, Zareh, Mihan, Zarrin and Pishgam cultivars were evaluated in two levels of irrigation (full irrigation and cutting irrigation from flowering to maturity) at the Agricultural Research Station of Miandoab during 2013-2015 growing seasons. Experiments were conducted in split plot based on randomized complete block design with three replications. Results showed that water deficit stress significantly increased remobilization rate, contribution of remobilization and source restriction and decreased the amount of spike weight, peduncle weight, sink restriction by removing leaves other than flag leaf, sink restrictions by removing flag leaf, grain yield and harvest index, so that terminal water deficit stress increased remobilization by 45.45% and the total yield contribution of remobilization of 18.30% in normal conditions increased to 43.33% under stress conditions. Among the genotypes, ‘Zarrin’ and ‘Mihan’ under normal moisture conditions and ‘Mihan’ genotype under terminal drought stress conditions produced the highest grain yield. In this study under terminal drought stress conditions, there were significant positive correlations between grain yield with remobilization rate and contribution of remobilization. It can be concluded that the varieties and genotypes afforded adequate remobilization and contribution of remobilization in grain yield in both conditions are appropriate for cultivation in optimal conditions, as well as areas that are faced with terminal water deficit stress.
Raouf Seyed sharif; Reza Seyed Sharifi
Abstract
In order to study the effect of mycorrhiza and foliar nano (Fe and Zn) oxide spraying on yield and some biochemical traits of spring safflower (cultivar Padedeh) under water limitation condition, a factorial experiment was conducted based on randomized complete block design with three replications at ...
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In order to study the effect of mycorrhiza and foliar nano (Fe and Zn) oxide spraying on yield and some biochemical traits of spring safflower (cultivar Padedeh) under water limitation condition, a factorial experiment was conducted based on randomized complete block design with three replications at the research farm of the Islamic Azad University, Ardabil Branch in cropping year of 2014. The experimental factors were included arboscular mycorrhiza application in two levels (with and without mycorrhiza), foliar application of nano zinc oxide in four levels (non-foliar application and foliar application of nano iron oxide, nano zinc oxide and nano zinc oxide + nano iron oxide) and irrigation in three levels [full irrigation as control, irrigation with holding at 50% of flowering and heading-bud stages (moderate and severe water limitation respectively)]. Results showed that water limitation was increased proline content, the activity of catalase, peroxidase, polyphenol oxidase enzymes. Mycorrhiza application and foliar nano (Fe and Zn) oxide spraying improved these traits under water limitation condition and normal irrigation. Means comparison showed that maximum of grain yield (2278.52 kg ha-1) was obtained at application of mycorrhiza, nano oxide of Zn+Fe and full irrigation. Minimum of it (834.25 kg ha-1) was obtained in non-mycorrhiza, no application of nano oxide and irrigation to heading-bud stage. Application of mycorrhiza and nano oxide of Zn+Fe increased grain yield by 35.9% as compared with non-mycorrhiza, non-foliar application of nano oxide under severe water limitation. It seems that mycorrhiza and nano oxide of Zn+Fe application is usable for profitable safflowerproduction under water limitation condition.
Shiva Akbari
Abstract
The goal of this study was to investigate climatic factors, crop management and plant growth traits, using a simple model to simulate growth and yield of soybean in Tehran climatic condition in order to be use as an efficient tool to study effective factors on yield. The model was evaluated under Tehran ...
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The goal of this study was to investigate climatic factors, crop management and plant growth traits, using a simple model to simulate growth and yield of soybean in Tehran climatic condition in order to be use as an efficient tool to study effective factors on yield. The model was evaluated under Tehran condition. Soybean is one of the important resources of herbal oil and protein. At the current study, production and partitioning of dry matter in vegetative parts and grains of soybean were investigated by changing the parameters of base temperature, the maximum leaf area index and the fraction of crop total dry matter at the beginning of grain growth. Decreasing and increasing of base temperature caused to decrease and increase the phenological stages, changing the production of dry matter and the allocation of dry matter to vegetative organs and grains. Decreasing and increasing of the fraction of remobilized dry matter to grains lead to enhance and reduce harvest index, respectively. To model evaluation, some statistics on differences between observed and simulated values were used. The simulated yield ranges were within 1890-2220 kg.ha-1 with mean values of 1982.5 kg.ha-1 and the observed yield ranges were 1632-2254 kg.ha-1 with mean values of 2014.5 kg.ha-1. The RMSE was 178.48 kg.ha-1 that was equal to 9% of average of observed and predicted values. All data points were included at the 80% of 1:1 line and it indicated that the model had suitable accuracy to predict soybean yield in Tehran climatic condition.
Gholamhasan Movahed; Nima Ahmadi; Ahmad Moieni
Abstract
In order to evaluate the responses of two ecotypes of Damask rose (Rosa damascena) to exogenous ethylene, an experiment was conducted based on a completely randomized design (CRD) at the laboratory of Postharvest Physiology, Tarbiat Modares University, Tehran, Iran. Damsk rose cut stems containg flower ...
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In order to evaluate the responses of two ecotypes of Damask rose (Rosa damascena) to exogenous ethylene, an experiment was conducted based on a completely randomized design (CRD) at the laboratory of Postharvest Physiology, Tarbiat Modares University, Tehran, Iran. Damsk rose cut stems containg flower buds and/or open flowers, single buds, or multiple flowers were exposed to exogenous ethylene for 24 h. Plant organs were placed into hearmatically seald glass chambers, where ethylen was injected, to achieve 0, 1, 2, 3, and 4 µl/l concentrations. Biocehmival characteristics, enzyme activities and morphological characteristics including flower life, contents of anthocyanin, flavonoide, and proline were determind in Kashan and Azaran ecotypes of Damask rose. The lowest psotharvest life was observed at 3 and 4 μl concentration of ethylene and the highest abscission was observed in Azaran ecotypes at a concentration of 4 μl/l of ethylene after four days. Anthocyanin and proline content and catalase activity reduced in both ecotypes studied. For both ecotypes, the lowest content of anthocyanin, proline and the lowest catalase activity (48/77 ΔA 240/mg protein) were observed in those treated with ethylene at 4 µl/l. The highest malondialdehyde (3.63 µmol/g petal fresh weight) was found in Azaran ecotype flowers treated with 4 µl/l ethylene concentration. Decrease of total protein in Kashan flowers (0.32 mg/g fresh petal) was much less than that in Azaran flowers (0.2 mg/g fresh petal). Based on these results, Kashan could be recommended as a tolerant ecotype to be used in breeding programs.
Samaneh Jahanpanah; Mahmoud Ghasemnejad; Younes Ebrahimi
Abstract
Incomplete pollination of kiwifruit flowers could be the main limiting factor which reduces marketable kiwifruit quality. Therefore, at the current study effect of pollen suspension and dry pollen as supplemental artificial pollination were evaluated on characteristics such as fruit size, fruit weight, ...
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Incomplete pollination of kiwifruit flowers could be the main limiting factor which reduces marketable kiwifruit quality. Therefore, at the current study effect of pollen suspension and dry pollen as supplemental artificial pollination were evaluated on characteristics such as fruit size, fruit weight, seed number, dry matter percent, tissue firmness, total soluble solid, and vitamin C content, mineral nutrient elements such as nitrogen, phosphors, potassium, calcium, and magnesium of Hayward Kiwifruit. The results showed that pollination with dry pollen, at the 60% of full bloom stage, increased marketable fruits in compare to other treatments. There are more seed number in these fruits (11% and 5% respectively), which result to increase fruit size, length and diameter as compare to pollen suspension and control. Fruit vitamin C could not affect by pollination, but fruit dry matter of flowers which pollinated at 60% of full bloom was the higher than the other treatments. Supplemental pollination with dry pollen increased fruit calcium, which resulted to improve nitrogen to calcium, potassium to calcium, the sum of potassium and magnesium to calcium, the sum of nitrogen and potassium to calcium ratios. Overall, it seems that supplemental pollination, especially with dry pollen at 60% of full bloom stage, could improve pollination and ovules fertilization. In conclusion, the same fruits have more seed number and strength sink for accumulation assimilate and mineral elements especially calcium. Overall, the profit of supplemental pollination with dry pollen was calculated about 48,800,000 Rials per hectare.
Mohsen Bagheri Dehabadi; Hossein Moghadam; Mohammad reza Chaichi; Nasrin ziloee
Abstract
To assess the effects of bio-fertilizer and some of microelements on quantitative and qualitative characteristics of sorghum (var. Pegah), this experiment was conducted at the research farm of the University of Tehran (Karaj-Iran) in 2011. The experiment was arranged as split plot based on complete randomize ...
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To assess the effects of bio-fertilizer and some of microelements on quantitative and qualitative characteristics of sorghum (var. Pegah), this experiment was conducted at the research farm of the University of Tehran (Karaj-Iran) in 2011. The experiment was arranged as split plot based on complete randomize design block with four replications. Two levels of mycorrhiza (inoculated and non-inoculated) and three levels of foliar application of iron (zero, four and eight per thousand) along with three levels of application of zinc (zero, three and six per thousand) were allocated to main and subplots respectivly. The results indicated that inoculation with mycorrhiza and application of micronutrients had positively significant effect on dry yield, plant height, shoot weight, leaf weight, crude protein, water soluble carbohydrates and ash (p<0.01) and reduced acid detergent fiber (p<0.05). However, foliar of Fe and Zn had no significant effects on root colonization. Also, investigated factors had no significant effects on number of leaves. The treatment of mycorrhiza and foliar application of the Fe and Zn in concentrations of four and three per thousand (respectively) produced the maximum of dry yield. This treatment increased yield by 40% compared with control. Based on the obtained results, treatment of myco-Fe4Z3 can be recommended for increasing yield and improving qualitative characteristics of forage sorghum (var. Pegah) in Karaj region.