Date for submission of Abstract for 6th International Conference AISDGONF-2023 extended to 31st January, 2023
Vol. 14 No. 1
Bio-efficacy of some new molecules against whitefly, Bemisia tabaci (Gennadius), thrips, Scirtothrips dorsalis (Hood) and red spider mite, Tetranychus sp. on cotton under Gangetic basin of West Bengal
Author(s): S. C. BALA, A. SARKAR AND L. C. PATEL
Abstract: Field experiment was conducted to determine the comparative efficacy of some new molecules against 3 major pests of cotton viz. whitefly, thrips and red spider mite. Three applications of diafenthiuron 40.5% + acetamiprid 3.9% WP at three different doses viz. 400g, 500g and 600 g ha-1 each along with diafenthiuron 50 WP @ 600 g ha-1, acetamiprid 20 SP @ 100 g ha-1 and imidacloprid 17.8 SL @ 125 ml ha-1 were made at 15 days interval. Diafenthiuron 40.5% + acetamiprid 3.9% WP @ 600 g ha- 1 showed the best efficacy for controlling all thethree sucking pests of cotton. Second best result was obtained from acetamiprid 20 SP @ 100 g ha-1 when white fly is concerned but in case of thrips and mite, it was diafenthiuron 40.5% + acetamiprid 3.9% WP @ 400 g ha-1 and diafenthiuron 50 WP @ 600 g ha-1, respectively. Maximum yield (23.24 q ha-1 was recorded in diafenthiuron 40.5% + acetamiprid 3.9% WP @ 600 g ha-1
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