Mehrab Mehri Charvadeh; Hamid Reza Zakerin; Marefat Mostafavi Rad; Saeed Sayfzadeh; alireza valadabadi
Abstract
In order to evaluate peanut (Arachis hypogaea L.) NC2 variety growth as affected by supplementary irrigation and Salicylic acid, this experiment was performed as split plat based on randomized complete block design with three replications in experimental field of Agicutural and Natural Resources Research ...
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In order to evaluate peanut (Arachis hypogaea L.) NC2 variety growth as affected by supplementary irrigation and Salicylic acid, this experiment was performed as split plat based on randomized complete block design with three replications in experimental field of Agicutural and Natural Resources Research and Education Center of Guilan Province (Kanroud research station of Astara), Iran, during 2018 and 2019 cropping seasons. Four level of irrigation regimes: no irrigation (rainfed condition), supplementary irrigation at initial flowering stage, supplementary irrigation at pod formation stage and supplementary irrigation at initial flowering + pod formation stages and three levels of salicylic acid (SA): 100, 200 and 300 µmol/l comprised experimental treatments, as main and sub plot, respectively. Drought stress dercreased all measured characteristics in peanut and foliar application of SA at the rate of 300 µmol/l improved all studied characteristics under bath supplementary irrigation and rainfed condition. The greatest pods number per plant (51.57), grain yield (3450 kg/ha) and pod yield (4958 kg/ha) of peanut were obtained under supplementary irrigation at initial flowering + pod formation stages with SA and these agronomic traits increased 38.79, 70.8 and 57.6 percent compared to rainfed comdition, respectively. Results of this reaserch indicated, supplementary irrigation and foliar application of SA at the rate of 300 µmol/l could be recommendable to enhance plant growth and grain yield of peanut under similar climatic condition.
alireza moghaddam khamseh; Saeed Sayfzadeh; Jahanfar Daneshian; Hamidreza Zakerin; alireza valadabadi
Abstract
In order to evaluate the planting date delay on phenological traits, yield components, grain yield, and linoleic and linolenic fatty acids of new sunflower hybrids, an experiment has been conducted as split plot in a randomized, completely block design, with four replicates at the field of oilseed section ...
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In order to evaluate the planting date delay on phenological traits, yield components, grain yield, and linoleic and linolenic fatty acids of new sunflower hybrids, an experiment has been conducted as split plot in a randomized, completely block design, with four replicates at the field of oilseed section of seed and plant Improvement during 2014-2016 growing season. The treatments include seven sunflower hybrids (Barzegar, Farrokh, Haysan 36, Qasem, Shams, Azargol, and Haysan 25) on three planting dates (15 days after harvest of autumn (wheat), July 1, July 15, and July 30, respectively). The experimental results show significant effects of planting date on all traits except number of seeds per head and linolenic acid at the level of 1% and on the percentage of oil and linoleic acid at the level of 5%. The studied hybrids are significantly different in all traits except linoleic and linolenic fatty acids. The latest experimental hybrids include Barzegar and Azargol hybrids and the earliest hybrid is Farrokh. The highest grain yield is obtained from the date of the first sowing at the rate of 2840 kg / ha and in the case of delayed sowing the yield is reduced to 41%.