Interactive Effect of Nitrogen and Sulphur on Yield and Quality of Groundnut (Arachis hypogea L.)

Randomized field experiments were conducted to study the interactive effect of sulphur (S) and nitrogen (N) on seed, oil and protein yield of two cultivars of groundnut {Arachis hypogea: cv Amber (V₁); cv Kaushal, (V₂)}. Two dosage levels of sulphur (0 and 20 ㎏ ha?¹) and two dosage levels of N (23.5 and 43.5㎏ ㏊?¹) in various combinations were tested as micronutrient treatments, T₁, T₂, and T₃. Results indicated significant enhancement of the yield components namely seed and oil yield as well as seed protein. Maximum response was observed with treatment T₃ (having 20 ㎏ S and 43.5 ㎏ N ㏊?¹). Increase in seed and oil yields of 90% and 103% in V₁ and 79 and 90% in V₂, respectively were recorded as compared to the control treatment T₁ (having 0 ㎏ S and 23.5 ㎏ N ㏊?¹). Effect of S and N interaction was observed on protein, N and S content in seeds. The results obtained by these experiments clearly suggest that judicious balanced application of N and S could improve the yield.