Abstract

                                An experiment was conducted during 2001 and 2002 at IARI, New Delhi, under irrigated condition to study the effect of nitrogen, Farm Yard Manure (FYM) and biofertilizers on dry matter accumulation, yield and NPK removal by cotton (Gossypium hirsutum L.). The results indicated considerable improvement in dry matter accumulation, lint, seed cotton and stalk yield and NPK removal by cotton with addition of higher doses of fertilizer N. Individual application of Azotobacter and mahaagrozyme failed to influence the dry matter accumulation, yield and NPK removal significantly. The performance of cotton with FYM @ 12 t ha' was found to be intermediate between 30 and 60 kg N ha'. Highest dry matter accumulation, yield and NPK removal was observed with integrated application of 30 kg N and FYM @ 12 t ha' along with Azotobacter (M.).

Key words : Cotton, Nitrogen, Azotobacter, Mahaagrozyme, Farmyard manure, NPK removal