八种杀虫剂对芒果茶黄蓟马的田间防治效果评价OA

To select highly effective,low-toxicity,and environmentally friendly insecticides against Scirtothrips dorsalis Hood on mango,field efficacy trials of eight insecticides were carried out in 2023 and 2024,with adults as experimental ma-terials.The results showed that:for the 3 000-fold dilution of 100 g·L-1 broflanilide suspension concentrate(SC),the pest population reduction rate and control effect 1 day after application were 80.4%～85.67%and 80.43%～85.69%,respectively,both of which were significantly higher than those of other insecticide treatments,indicating that this insecticide had a good quick-acting effect;3 days after application,the pest population reduction rates of 1 500-fold dilution of 60 g·L-1 spinetoram SC,1 000-fold dilution of 5%abamectin·spinosad SC,3 000-fold dilution of 100 g·L-1 broflanilide SC and 1 500-fold dilution of 10%chlorfenapyr SC were all 80.85%～89.80%,and the control effects ranged from 82.63%to 90.75%.These four insecti-cides had significantly better control effects on Scirtothrips dorsalis Hood than other insecticides;7 days after application,the control effects of 1 500-fold dilution of 10%chlorfenapyr SC and 1 000-fold dilution of 5%abamectin·spinosad SC reached the highest,86.15%～91.27%,with relatively good persistence.The four insecticides,namely 60 g·L-1 spinetoram SC,5%abamectin·spinosad SC,100 g·L-1 broflanilide SC,and 10%chlorfenapyr SC,had good control effects on Scirtothrips dorsalis Hood in mango.These four insecticides could be preferentially selected in actual production.