Pesticides are used to control Tetranychus urticae Koch populations in country bean, Dolichos lablab (L.). The results of using pesticides are more predictable if there is detailed information about their toxicity and specificity. In particular, the degree of pesticide exposure is associated with the adult stages of T. urticae and natural enemies, while determining the overall efficacy of pesticide use. The present study was carried out to determine the direct and residual effects of seven pesticides, namely abamectin, abamectin + bifenthrin, spinosad, chlorfenapyr, deltamethrin, imidacloprid and thiamethoxam against Tetranychus urticae Koch (Acari: Tetranychidae) and residual toxicity of these pesticides against the pest and its predator Coccinella septempunctata (L.) (Coleoptera: Coccinellidae) adults. In the laboratory trials, abamectin caused 100% mortality of T. urticae within 3 h, abamectin + bifenthrin within 6 h and other pesticides within 48 h except for imidacloprid and thiamethoxam. When the toxicity of T. urticae eggs was examined, the egg mortality for all pesticide treatments was significantly higher than the control. Abamectin + bifenthrin and chlorfenapyr caused 100% egg mortality followed by application of abamectin (95%) and deltamethrin (82%). On the other hand, thiamethoxam, imidacloprid and spinosad showed 63%, 65% and 71% egg mortality, respectively. In potted bean plants, abamectin, abamectin + bifenthrin and chlorfenapyr showed significant mortality of T. urticae over control up to 21 days and the rest of the pesticides showed up to 14 days. Abamectin and chlorfenapyr showed higher residual efficacy against T. urticae but low toxicity against C. septempunctata. Imidacloprid had the longest residual effect on adults of C. septempunctata causing 20% mortality after 21 days, but low toxicity against T. urticae. Abamectin + bifenthrin residue caused > 20% mortality of C. septempunctata after 14 days of exposure. Therefore, abamectin and chlorfenapyr can be used for the management of T. urticae because of their higher toxicity against T. urticae and low residual activity against C. septempunctata.

杀虫剂用于控制乡村豆Dolichos lablab (L.) 中的Tetranychus urticae Koch 种群。如果有关于农药毒性和特异性的详细信息，则使用农药的结果更容易预测。特别是，农药暴露程度与荨麻疹和天敌的成虫阶段有关，同时决定了农药使用的整体功效。本研究进行了决定着七个农药的直接和残余影响，即阿维菌素，阿维菌素+联苯菊酯，多杀菌素，溴虫腈，溴氰菊酯，吡虫啉和噻虫嗪对二斑叶螨Koch（Acari：Tetranychidae）和这些农药对害虫及其捕食者七星瓢虫（L.）（鞘翅目：瓢虫科）成虫的残留毒性。在实验室试验中，阿维菌素引起的死亡率为100％T.螨3小时，阿维菌素+联苯菊酯内6小时，其他农药在48小时内除吡虫啉和噻虫嗪。当荨麻的毒性检查鸡蛋，所有农药处理的鸡蛋死亡率显着高于对照。阿维菌素 + 联苯菊酯和氯芬那定导致 100% 的鸡蛋死亡率，其次是阿维菌素 (95%) 和溴氰菊酯 (82%)。另一方面，噻虫嗪、吡虫啉和多杀菌素分别显示 63%、65% 和 71% 的鸡蛋死亡率。在盆栽豆类植物中，阿维菌素、阿维菌素 + 联苯菊酯和氯芬那比在长达 21 天的时间内对荨麻疹表现出显着的死亡率，其余杀虫剂在长达 14 天的时间内表现出显着的死亡率。阿维菌素和氯芬那对T. urticae显示出较高的残留效力，但对C. septempunctata 的毒性较低。吡虫啉对七星瓢虫成虫的残留作用时间最长21 天后导致 20% 的死亡率，但对荨麻疹的毒性低。暴露 14 天后，阿维菌素 + 联苯菊酯残留导致septempunctata死亡率 > 20% 。因此，阿维菌素和氯芬那定可用于治疗荨麻疹，因为它们对荨麻疹的毒性较高，而对七星瓢虫的残留活性较低。