Studies on development and promotion of IPM technology in rainfed, Bt and non-Bt cotton varieties were carried out for four consecutive years (2001-2004) at the two locations at Nawandi and Loha, Nanded in 6th agro-ecological region of India. Sucking pests were 31.4% and 12.2% more in non-IPM than the IPM fields of Bt and non-Bt cotton, respectively.