Integrated nutrient management in transplanted hybrid rice (Oryza sativa)

A field experimnt was conducted on clay-loam soil at research farm of Indira Gandhi Agricultural University, Raipur during rainy season 1999 and 2000, to find out suitable nutrient-management strategies for hybrid rice (Oryza sativa L.). Application of inorganic fertilizer level of 100, 60 and 40 kg/ha N, P₂O₅ and K₂O along with 10 tonnes farmyard manure (FYM) gave the grain yield and B:C ratio comparable to that of 100, 60 and 40 kg/ha N, P₂O₅ and K₂O + FYM + 25 kg ZnSO₄/ha or 150, 75 and 60 kg/ha N, P₂O₅ and K₂O + FYM. The application of potassium 60 per cent as basal and 40 per cent at maximum tillering stage significantly increased the grain yield, uptake of N, P and K and the net return than its whole amount applied basal. Nitrogen treated with neem extract proved significantly better than untreated nitrogen.