Effect of compost, vemicompost farm yard manure, green manuring and fertilizer nitrogen on yield and uptake of major nutrients by rabi-sorghum in vertisol

A field experiment was conducted to study the effect of different organic manures with different levels of inorganic fertilizer on yield and uptake of major nutrients (N, P, K) in Vertisol. The highest grain yield and uptake of all three major nutrients were obtained where 50 per cent N through sunhemp plus 50 percent recommended dose of fertilizer N was applied under sunhemp as green manure.