Performance of bt cotton hybrid (rch-2) at different plant densities and scheduling of nitrogen under rainfed conditions

A field experiment was conducted to find out suitable plant density and scheduling of nitrogen to Bt cotton hybrid, RCH-2 under rainfed conditions of Northern Telangana Region of Andhra Pradesh during 2006–07 and 2007–08 at Agricultural Research Station, Adilabad in soils where available nitrogen was low. Results indicated that higher plant density of 27,777 plants/ha gave maximum seed cotton yield of 2278 kg/ha than lower plant densities of 18518 and 13888 plants/ha. Similarly, scheduling of nitrogen in five equal splits starting from 15 days after sowing (DAS) at 15 days interval gave higher seed cotton yield of 2386 kg/ha over recommended nitrogen application at 30, 60 and 90 DAS with 1825 kg/ha.