Effect of nitrogen and sulphur on yield, quality and economics of groundnut (Arachis hypogaea L.)

A field experiment was carried out at the Experimental farm, Annamalai University during the Kharif season of 2022 to study the effect of nitrogen and sulphur on yield, quality and economics of groundnut. The experiment consisted of sixteen treatments and was laid out in a factorial randomized block design with three replications. The treatment consisted of Factor A (nitrogen levels): N₁- 0 Kg N/ha, N₂ - 17 Kg N/ha, N₃ - 25 Kg N/ha, N₄- 34 Kg N/ha and Factor B (sulphur levels): S₁- 0 Kg S/ha, S₂ - 20 Kg S/ha, S₃ - 40 Kg S/ha, S₄ - 60 Kg S/ha. The results revealed that yield, quality and economics were significantly influenced by different nitrogen and sulphur levels. Among the different nitrogen levels tried, the application of 34 kg N/ha (N₄) registered higher yield, quality characters and economics of groundnut. Regarding sulphur levels, maximum yield, quality characters and economics of groundnut were influenced by the application of sulphur @ 60 kg/ha (S₄). For various interaction effects, the application of 34 kg N/ha along with 60 kg S ha^-1 has a significant effect on yield, quality characters and economics which ultimately results in maximum yield and higher net return of groundnut.