Babak Darvishi; Enayat Rezvani; Hosein Sadeghi; Mostafa Shakeri; Hamed Nasiri Vatan; Mohammad Kavand; Shamsollah Yenkejeh Farahani; Mehran Sharafizad
Abstract
Objective: This experiment was conducted to investigate the agricultural value of two new varieties of beans: Sepehr and Sembol, which were introduced by the private sector with the aim of registering the named varieties in the national list of plant varieties.Methods: These cultivars (Sepehr and Sembol) ...
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Objective: This experiment was conducted to investigate the agricultural value of two new varieties of beans: Sepehr and Sembol, which were introduced by the private sector with the aim of registering the named varieties in the national list of plant varieties.Methods: These cultivars (Sepehr and Sembol) along with 4 domestic control cultivars were studied in 3 locations (Karaj, Zanjan, and Khomein) based on complete randomized block design in 3 replications during two crop seasons (2019-2020 and 2020-2021).Results: Results showed that flowering occurred significantly earlier in candidate cultivars (Sepehr and Sembol) than control cultivars (8 and 4 days respectively). As the same way, physiological seed ripening in candidate cultivars occurred earlier than control cultivars (8 and 10 days earlier than mean of other cultivars respectively). The number of seeds in the pods of Sepehr and Sembol candidate cultivars did not significantly differ from the control cultivars. Sepehr and Sembol cultivars produced larger seeds and hundred seeds weight of these cultivars was greatly higher than other cultivars (9.7 and 24.1 percent higher than mean of other cultivars respectively), but the seed yield in these two cultivars was significantly lower than control cultivars (19.89 and 18.27 percent lower than mean of other cultivars respectively).Conclusion: Finally, the candidate cultivars Sepehr and Sembol can play an effective role as new germplasms in the country's bean production due to their erect type and ease of harvesting, early maturity and consumption of one to two times less water, marketability and production of larger seeds.
Hamid Jabbari; Farid Golzardi; Farnaz Shariati; Hormoz Asadi
Abstract
In order to evaluate the quantity and quality of safflower cultivars forage in three forage harvesting times based on plant phenological stages, the present study has been conducted in a randomized complete block design with split-plot in time arrangements with three replications at the Seed and Plant ...
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In order to evaluate the quantity and quality of safflower cultivars forage in three forage harvesting times based on plant phenological stages, the present study has been conducted in a randomized complete block design with split-plot in time arrangements with three replications at the Seed and Plant Improvement Institute (SPII), Karaj, Iran, during 2018-2019 and 2019-2020 cropping seasons. The main factor includes three safflower cultivars (Goldasht, Golmehr, and Parnian), with three forage harvesting time (namely stem elongation, branching, and flowering stages) considered as the sub-factor. The effect of year only on plant height and water-soluble carbohydrates (WSC) has been significant (P≤0.05). The results show that the interaction effect of cultivar × harvesting time on the fresh forage yield, plant height, WSC, and neutral detergent fiber (NDF) has been significant (P≤0.01). The highest fresh forage yield (52103 kg ha-1) is obtained by harvesting the Golmehr cultivar at the beginning of flowering; however, the highest dry matter yield is observed in Golmehr and Parnian cultivars. The highest dry matter yield has been observed in the branching stage (11900 kg ha-1), with the crude protein content in this stage being 14.57%. In contrast, the maximum crude protein content is observed in the flowering stage (19.22%), even though the mean dry matter yield at this stage has been 9937 kg ha-1. The maximum and minimum RFV (130.3% and 92.3%) are recorded in the forage of Goldasht and Golmehr cultivars, respectively. Therefore, among the studied cultivars, Parnian, and among the growth stages, forage harvesting at the branching stage is introduced as the superior treatment to achieve maximum yield and quality of safflower forage.
Fatemeh Ghasemi; Weria Weisany; Marjan Diyanat; Mahmood Moradi
Abstract
The use of densitiy and cultivars that have high competitiveness are effective ways to control weeds in the integrated management system. The present study aims at increasing competitive ability of some dryland chickpea cultivars against weeds under different plant densities. Therefore, an experiment ...
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The use of densitiy and cultivars that have high competitiveness are effective ways to control weeds in the integrated management system. The present study aims at increasing competitive ability of some dryland chickpea cultivars against weeds under different plant densities. Therefore, an experiment has been conducted as a split factorial in a Randomized Complete Block Design with four replications in the research farms of the Kurdistan Agricultural and Natural Resources Research and Education Center, Garizeh Agricultural Research Station, Sanandaj, Iran, during the 2020-2021 growing seasons. Experimental treatments include different plant density (30, 36, and 42 plants.m-2) as main plot, seven cultivars (Azad, Jam, Hashem, ILC482, Pirooz, Kaka, and a local variety), and weed management (no weeding and hand weeding during the whole growing season) as subplots. Results indicate that weeding operations are effective in increasing the number of pod per plant by 35.63%. Also, it is observed that there have beem significant differences among yield and yield components of the studied cultivars. ILC482 and Kaka cultivars have had the highest and lowest number of main branches at 3.82 and 2.58 values, respectively. The highest number of secondary branches obtained at a density of 30 plants.m-2. Furthermore, the highest number of pods per plant registered for Pirooz and Jam cultivars and the lowest number of pods per plant has been 7.98 in Hashem cultivar. The highest grain yield, indices of tolerance and competition and the lowest weed density observed for the Jam cultivar. In all examined cultivars, the number of seeds per square meter, grain yield and ability withstand competition index improve with increasing plant density so that the highest values are achieved at the plant density of 42 plants.m-2.
Abolfazl Faraji
Abstract
In order to study the effect of temperature and photoperiod (PP) on development rate of different vegetative and reproductive stages of canola, an experiment was conducted at Agricultural Research Station of Gonbad during 2005-2007. The experiment was a randomized complete block design arranged in a ...
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In order to study the effect of temperature and photoperiod (PP) on development rate of different vegetative and reproductive stages of canola, an experiment was conducted at Agricultural Research Station of Gonbad during 2005-2007. The experiment was a randomized complete block design arranged in a split-plot in two conditions, for example supplemental irrigation and rainfed. There were different regression equations between mean temperature and duration of development periods, i.e. a negative power equation for periods from planting to emergence and from emergence to beginning of budding, a quadratic equation for periods from beginning of budding to beginning of flowering and beginning of flowering to beginning of seed filling, and a negative linear equation for period from beginning of seed filling to physiological maturity. The decrease in seed filling period with increase in temperature was considerably higher in Hyola401 hybrid than RGS003 cultivar, indicating that the response of Hyola 401 development to temperature was more than RGS003. There was a positive linear relationship between mean PP from emergence to beginning of flowering with cumulative thermal time during this period, explaining 68 and 74 percent of the variation for Hyola401 and RGS003 cultivars, respectively, showing the positive effect of PP on canola development from emergence to beginning of flowering. Canola development was affected by PP and temperature during emergence to beginning of flowering, and temperature during beginning of flowering to physiological maturity.
ali keyhani; ali saneinjad
Abstract
This experiment was conducted in Andimeshk Region (north of Khouzestan) to study the effects of nitrogen levels on plant characters of two potato cultivars (Solanum tuberosum L.) in identical conditions of poultry manure, in 2012-2013 crop year, as a factorial randmaized complete block design ...
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This experiment was conducted in Andimeshk Region (north of Khouzestan) to study the effects of nitrogen levels on plant characters of two potato cultivars (Solanum tuberosum L.) in identical conditions of poultry manure, in 2012-2013 crop year, as a factorial randmaized complete block design with three replications. The first factor was consisting of four nitrogen levels (0, 70,140 and 210 kg/ha). The second factor was consisting of two potato cultivars (cv. ‘Arinda’ and ‘Sante’). The results showed that cv. ‘Arinda’ was significant in all the tested characters (plant height, stems per plant, tubers per plant, tuber weight per plant, micro tuber numbers, macro tuber numbers and tuber yield) exception medium tuber numbers compared with cv. ‘Sante’. The highest tuber yield was observed at cv. ‘Arinda’ and N1 fertilizer treatment with mean of 41870.3 kg/ha and lowest tuber yield in cv. ‘Sante’ and N0 fertilizer treatment with mean of 20437.6 kg/ha. Therefore, the cv. ‘Arinda’ in the consolidated conditions with lower consumption of nitrogen fertilizer up to 70 kg/ha has all desirable plant characters for increasing of tuber yield, and it is recommended for cultivation in climate conditions of region.
Abolfazl Faraji
Abstract
To study the effects of used water in evapotranspiration, seed number per unit area and leaf relative water content on seed weight of canola (Brassica napus L.), an experiment was conducted as a randomized complete block design, arranged in a split-plot under two conditions, i.e. supplemental irrigation ...
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To study the effects of used water in evapotranspiration, seed number per unit area and leaf relative water content on seed weight of canola (Brassica napus L.), an experiment was conducted as a randomized complete block design, arranged in a split-plot under two conditions, i.e. supplemental irrigation and rainfed in 2005-7. Two cultivars of canola (‘Hyola401’ and ‘RGS003’) as subplots were grown at five sowing dates as main plots, spaced 30 days apart. There was a linear relationship between seed weight and used water in evapotranspiration. Irrigation increased seed weight and seed yield significantly. The mean 1000- seed weight under irrigation and rainfed conditions was 3.2 and 2.7g in 2005-6, and 4.2 and 3.7g in 2006-7. There was a strong linear relationship between seed weight and leaf relative water content, explaining 92 and 84 percent of the variation for ‘Hyola401’ and ‘RGS003’, respectively. For an each percent increase in leaf relative water content, 1000-seed weight of ‘Hyola401’ and ‘RGS003’ increased 0.191 and 0.146g, respectively. The strong relationships of seed weight with used water in evapotranspiration and leaf relative water content, over different environmental conditions and cultivars, showed these variables to be generally applicable in canola seed weight determination
Ali Reza Borjian; Amir hooshang Jalali
Abstract
Pulses crops with nitrogen fixation ability have a special place in the crop rotation. In order to comparethe agronomic characteristics of five promising lines of pinto beans with Sadri and local Khomeincultivars as control a study was conducted at 2011- 2012 cropping seasons, in three cities ofFereidoonshahr, ...
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Pulses crops with nitrogen fixation ability have a special place in the crop rotation. In order to comparethe agronomic characteristics of five promising lines of pinto beans with Sadri and local Khomeincultivars as control a study was conducted at 2011- 2012 cropping seasons, in three cities ofFereidoonshahr, Dehaghane and Semirom in Isfahan Province. Randomized complete block design withfour replications was used for the study. In Fereidoonshahr area, yields of KS21191, E9, and E10 hopefullines were respectively, 3035, 3412 and 3455 kg ha-1, without significantly different from Sadri controlcultivar, but were respectively 37, 21.8 and 20.3% less than Khomein local varieties. In Dehaghane area,yields of all hopeful lines were significantly less than both control cultivars. In Semirom region, hopefullines of E9 and E10, respectively, with yields of 2900 and 2720 kg ha-1 had equivalent yield with twocontrol varieties. Number of pods per plant and seeds per pod were the two major components thatexplain a significant part of the difference between the genotypes. Trend of harvest index change weresimilar in the two regions Dehaghane and Fereidoonshahr and Khomein local cultivars, respectively with42.8 and 38.8 HI percent, had the highest HI values. In Semirom region, harvest index for Sadri andKhomein cultivars and lines E9 and E10, were 37.1, 36.8, 35.8 and 36.5 percent respectively. Accordingto the results of this study, yield of E9 and E10 lines, in both Fereidoonshahr and Semirom regions, andyield of KS21191 line, only in Fereidoonshahr can be equal with the yield of control cultivar. Thepromising lines of this study were not appropriate for the Semirom area.
Hossein Afshari; Raheleh Zahedi; Tahereh Parvaneh; Masoud Zadehbagheri
Abstract
In order to study the effect of different concentrations of salicylic acid in two commercial apricotcultivars of Shahrood namely ‘Shahrood 41’ and ‘Jaffari’, under cold stress, a factorial experiment wasconducted in a randomized complete block design with three replications in ...
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In order to study the effect of different concentrations of salicylic acid in two commercial apricotcultivars of Shahrood namely ‘Shahrood 41’ and ‘Jaffari’, under cold stress, a factorial experiment wasconducted in a randomized complete block design with three replications in 2012 at the AgriculturalResearch Center of Shahrood city. The test had four factors including: SA with three levels (0.625, 0.125,0.25mM), three stages of phenological growth (dormancy, swelling and flowering) and four temperature(four, zero, -2 and -4 degree centigrade) and two apricot cultivars (‘Shahrood 41’ and ‘Jaffari’) andmeasured traits were proline and soluble sugars. ‘Jaffari’ cultivar had the highest amount of solublesugars at -4 degree centigrade in bud swelling stage and the maximum rate of proline belonged to0.25mM of SA in the same cultivar, -4 degree centigrade and bud swelling stage. Ion leakage at differenttemperatures and different phonological growth stages were significantly different at five percent level.‘Jaffari’ with lower ion leakage at -4 degree and higher proline content than ‘Shahrood 41’ had higherresistance to frost.
Salman Dastan; Ghorban Noormohamadi; Hamid Madani
Abstract
To evaluate of rice genotypes in various modified systems, an experiment was carried out as split plot in randomized complete blocks design with four replications at Neka region, Mazandaran province, Iran in 2011-2012. Cropping systems were chosen as main plots including conventional, improved and System ...
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To evaluate of rice genotypes in various modified systems, an experiment was carried out as split plot in randomized complete blocks design with four replications at Neka region, Mazandaran province, Iran in 2011-2012. Cropping systems were chosen as main plots including conventional, improved and System of Rice Intensification (SRI) and genotypes as sub plots including: Sang Tarom, Hashemi Tarom, Neda and Shiroodi. The results indicated that the most number of fertile tiller per hill, number of spikelet per square meter (374.8 number) and number of filled spikelet percentage per panicle was produced in SRI that has led to the most paddy yield (6412 kg/ha). The most number of filled spikelet per panicle and filled spikelet percentage per panicle was obtained for cv. Tarom Hashemi. But, number of panicle per square meter (396.8) was the highest in cv. Neda. The maximum paddy yields were 7272 and 7315 kg/ha for cv. Neda and Shiroodi. The highest paddy yield was 7770 kg/ha that produced using SRI and cv. Neda. Paddy yield in SRI was 5.44 and 12.65 percentage more than improved and conventional systems, respectively. Therefore, SRI was a cropping system that with creating optimum management practices had led to increase of paddy yield and yield components of rice.
Adel Amiri; Enayatollah Tohidi nejad; Mohammad Ali Javaheri; Ghasem Mohammadi nejad
Volume 12, Issue 1 , May 2010, , Pages 11-19
Abstract
In order to evaluate the effects of planting date, genotype and Azetobacter on wheat, the experiment was conducted in Bardsir Agricultural Research station in 1358. Planting date was mentioned as main factor in three levels (15th of Mehr, 5th of Aban and 25th of Aban), Azetobacter in three levels and ...
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In order to evaluate the effects of planting date, genotype and Azetobacter on wheat, the experiment was conducted in Bardsir Agricultural Research station in 1358. Planting date was mentioned as main factor in three levels (15th of Mehr, 5th of Aban and 25th of Aban), Azetobacter in three levels and three different genotype of wheat including, C80-2, C80-4 and Alvand (control) were treated as Split factoriel in RCBD with three replication. The measured traits at harvesting time was, mean on spikelet per spike, plant height, Spike length, Number of tiller, straw weight, 1000 grain weight, grain protein, and grain yield. There is significant difference among different planting dates, also the interaction of Genotype× azetobactor was significant for yield, the highest yield was belonged to Alvand with inoculation with Azetobacter white C80-4 had showed the lowest yield without inculation. The interaetion of planting date × Genotype C80-2 was the best the in the 5th Aban white this line had the lowest yield on 25th Aban. At the whole experiment Alvand showed the highest yield with inoculation, at 5th Aban as planting date, while C80-4 had the lowest in 25 of Abab and without inoculation. According to the result of this research, Azetobacter as an useful biological fertilizer would be advisable, due to facilating the Application and Economic benefit, For the farmers. Also it is advised to the farmers for planting Alvand as a good variety, and also planting in 5th of Aban because of escape of temperature stress.