Field Performance of Bt Cotton Hybrids as IPM Component against Bollworm Complex Damage at Harvest Under Rainfed Condition

A field experiment was conducted at Cotton Research Unit, Dr. PDKV, Akola during 2004-05 under rainfed condition in randomized block design with four replications. Three Bt Cotton hybrids viz, MECH-12 Bt, MECH-162 Bt and MECH-184 Bt and two check hybrids viz, PKV-Hy-2 and NHH-44 were grown at 90 x 60 cm as IPM component. The plant protection packages recommended under IPM module which was developed by Dr. PDKV, Akola during 2003-04 were adopted on all the cotton hybrids. From the present study it was observed that are the three Bt cotton hybrids were found promising in recording significantly less open boll and loculi damage at harvest as compared to check hybrids in spite of no sprays for bollworm control on Bt cotton hybrids whereas three sprays for bollworm control on check hybrids.