Direct and residual effects of sulphur on growth, yield and quality of cotton (Gossypium hirsutum) - mustard (Brassica juncea) cropping system

摘要

Field experiments were conducted in 1998-99 and 1999-2000 to study the direct and residual effects of sulpur application in cotton-mustard cropping system at Sirsa, Haryana. Results indicated that dry matter and seed cotton yield, stover and seed yield of mustard, content of S and protein in seeds of cotton and mustard increased significnatly by recommended NPK with S @ 30 kg/ha applied to both crops over NPK alone (no sulphur). Pooled data revealed significant increase in seed cotton (22.5%), mustard seed (31.4%), protein content in seeds of cotton (4%) and mustard (3.4%) and oil content in mustard seed (5.3%) by addition of S with NPK over NPK alone, to both the crops. Yield and yield compoents of mustard were also increased by resudual S appliledin the preceding crop. However, marginal increase in oil content of cotton seed was observed by S application. Monetary gross returns calculated on mean yield basis indicated higher values of returns in treatments NPK +S where sulphur was applied to both the crops. Direct application of S @ 30 kg/ha gave on additional returns of Rs. 5569 from cotton and Rs. 38887- from mustard with a total net returns of Rs. 94577- per ha in cotton-mustard cropping over control.