TY - JOUR ID - 103143 TI - Evaluation of cotton yield and yield components under different irrigation quantities and frequencies in transplanting delayed cotton cultivation JO - Iranian Journal of Irrigation & Drainage JA - IDJ LA - en SN - 2008-7942 AU - Khajeh Mozaffari, Milad AU - Abdolhosseini, Mohammad AU - Ghorbani Nasrabad, Ghorban AU - Farzaneh, Mohammad Reza AD - Water Engineering AD - Water Engineering Department, College of Soil and Water Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran AD - Cotton Research Institute of Iran, Agricultural Research, Education, and Extension Organization (AREEO), Gorgan, Iran AD - Water Engineering Department, Tarbiat Modares University, Tehran, Iran Y1 - 2020 PY - 2020 VL - 13 IS - 6 SP - 1651 EP - 1660 KW - cotton KW - Delayed Plantings KW - Transplanting method KW - Yield KW - Water Use Efficiency DO - N2 - Considering the importance of cotton in crop rotation and the decreasing trend of its cultivation area in recent years, it is necessary to use efficient and optimized methods to increase the cultivation area and the amount of production of this strategic crop and to reduce its production costs. One of these methods is the delayed cotton cultivation of premature cultivars in the form of transplanting. Considering the important role of time management and irrigation in cotton cultivation, it is necessary to determine the optimal amount of water consumed by this plant in the delayed cultivation method. This research was carried out in a split plot design by randomized complete block design with three replications. Irrigation interval treatments (including irrigation after 70, 105 and 140 mm cumulative evaporation from the evaporation pan) as main plots and different irrigation water amounts (including 50, 75, 100 and 125% of evaporated water from the pan) as subplots were considered. The results showed that the treatment of irrigation after 105 mm evaporation from the pan had the highest yield, bolting percentage, water use efficiency and lint content, and yielded higher yields of 11 and 40% than 70 and 140 mm treatments, respectively. While 100% water treatment with 2016 kg/ha had the highest yield among irrigation depth treatments, the difference between treatments with 50 and 125% was not significant in 5% level in Duncan test. On the other hand, with increasing water depth, water use efficiency decreased, in such a way that 50% water treatment had the highest water use efficiency. Finally, according to the evaluation results of performance, yield components, and water use efficiency, the best treatment was irrigating after 105 mm evaporation from the pan with depth of 50%. UR - https://idj.iaid.ir/article_103143.html L1 - https://idj.iaid.ir/article_103143_a7375a926deb84760f424e8bd94ece75.pdf ER -