Impact of Predators and Some Commercial Insecticides on Thrips tabaci Lindeman and Amrasca biguttula Ishida Populations in Bt Cotton under Arid Climate
Impact of Predators and Some Commercial Insecticides on Thrips tabaci Lindeman and Amrasca biguttula Ishida Populations in Bt Cotton under Arid Climate
Azhar Abbas Khan*, Humaira Kanwal, Sumair Batool, Zeshan Hassan, Jawad Munawar Shah, Hafiz Muhammad Aatif, Ahmad Nawaz, Hasan Taha and Yasir Ishfaq
ABSTRACT
Insect pests and their vectored diseases are the most common factors which cause severe damage to the cotton crop. In this two year study, the effectiveness of Commando plus®, Oshin®, Talstar®, Radiant®, Movento® and Maximal® was evaluated against Thrips tabaci, Amrasca biguttula and their impact on bio-control agents in Bt cotton. More reduction in T. tabaci was observed with Radiant® and Talstar® forboth years at the first application as compared to other treatments through 9 days after treatment. The second application of treatments also showed minimal differences from first application and again plots treated with Radiant® showed the best reduction in thrips population for both years. Generally, Radiant® found friendly toward predators as compared to other chemistries. The findings for tested chemicals showed that bio-based insecticides i.e. spinetoram (Radiant®) and nitenpyram (Maximal®) showed less impact on natural enemies in addition to suppression of T. tabaci and A. bigutulla.
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February 2022
Vol. 54, Iss. 1, Pages 1-501
