Comparative diversity of transgenic Bt and non -transgenic Cotton against insect pests

摘要

The overall diversity index of arthropod fauna was higher in non-Bt (1.93) followed by RCH 134 BG-I (1.86) plots .This diversity in RCH 134 BG-I and non-Bt was due to greater evenness indices (0.894-0.808). In Mansa, the arthropod diversity was maximum in non-Bt plots (1.73) followed by BG-II (0.86) and BG-II while the dominance parameter was prominent in vegetative phase of the cotton crop in BG-I (0.56).