Document Type : Original Article
Authors
1 Plan and Budget Organization
2 Department of agriculture , Islamic Azad University, , Birjand
3 Associate Professor, Department of agriculture, Islamic Azad University, Birjand
4 Assistant Professor, , Jahade Daneshgahi of Sothern Khorasan
Abstract
Water deficit is one of the most important environmental deficites that affects the performance of many products by changing physiological and biochemical processes. for investigate the effect of nutrition methods and water deficit on the functional, physiological and qualitative traits of safllower, this research was carried out in the form of split plots based on a randomized complete block design in three replications and in two crop years of 2019-2020 and 2020-2021 in the research farm of Jahad Daneshgahi of birjand. Irrigation regime treatment includes two levels of full irrigation (100% water requirement) and water deficit (50% water requirement) as the main factor and considering the nutritional program. There were eight methods (control, NPK, humic acid (HA), fertilizing phosphate-2 (PB-2), NPK + HA, NPK + PB-2 , HA + PB-2.NPK+HA+PB-2).Water deficit decreased seed yield, number of bolls per plant, number of bolls per square meter, percentage of seed oil, number of seeds per boll, oil yield and weight of 1000 seeds, and increased the efficiency of water consumption for seed and oil production. Based on the results of the research, feeding increased functional traits and qualitative traits such as seed oil.
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