Response of Bt cotton to crop geometry and nutrient management under dryland conditions

A field experiment was conducted during 2014-15, 2015-16 and 2016-17 at All India Co-ordinated Research Project for Dryland Agriculture, Vijayapur to study the response of Bt cotton to crop geometry and nutrient management under dryland conditions. The results of three years indicated that growing of Bt. Cotton at 120 cm x 45 cm gave significantly higher kapas yield of 1331 kg ha-1 as compared to rest of the crop geometry. Application of 60:30:60 kg N, P2O5 and K2O per ha produced significantly higher kapas yield of 1232 kg ha-1 as compared to application of 30:15:15 kg N, P2O5 and K2O per ha (1154 kg ha-1). Interaction effect was also significant. Crop geometry of 120 cm x 45 cm with application of 60:30:60 kg N, P2O5 and K2O per ha produced significantly higher kapas yield of 1433 kg ha-1 as compared to rest of the treatments. Similar trend was observed with respect to gross and net returns.