In order to find efficient and safe insecticides against cowpea aphids,ensure the quality and safety of cowpea and farmers'planting benefits,field trials were carried out in 2023.The comparative analysis showed that the quick bioactivity of acetamiprid 10％WP 300 g/hm2 against cowpea aphids was the best,and the average efficacy reached to 82.32％on the 1st day after treatment.The quick bioactivity of pymetrozine 60％WG 180 g/hm2 was the worst,and the average efficacy was 21.97％on the 1st day after treatment.The four insecticides all had persistent bioactivities,the average efficacies were over 99％on the 1 0th,15th day after treatment.
维普
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