Antwi F B, Olson D L, Carey D R
Department of Land Resources and Environmental Sciences, Montana State University, Bozeman, MT 59717, USA.
J Econ Entomol. 2007 Aug;100(4):1201-9. doi: 10.1603/0022-0493(2007)100[1201:coeaci]2.0.co;2.
Studies were done comparing the insecticides SpinTor (spinosad), BotaniGard (Beauveria bassiana), Neemix (azadirachtin), and Surround (kaolin, a clay) with conventional chemical insecticides Capture (bifenthrin) and Helix XTra (thiamethoxam), all applied at seven rates in a 7-d assay to assess their impact on adult crucifer flea beetle, Phyllotreta cruciferae (Goeze) (Coleoptera: Chrysomelidae). Lethal time (LT) required for 25, 50, and 75% mortality (LT25, LT50, and LT75) and relative potencies for the insecticide concentration groupings (0, 1X-1.5X, and 2X- 4X) were estimated for each treatment by using survival functions. P. cruciferae mortality increased in response to increasing concentrations, especially for Helix XTra, Capture and SpinTor. After 2 d of exposure in 2002, mortality ranged from 54 to 78% for Helix XTra, from 60 to 94% for Capture, and from 66 to 92% for SpinTor across concentrations. In 2003, flea beetle mortality ranged from 37 to 60%, from 29 to 63%, and from 23 to 52% on exposure to Helix XTra, Capture, and SpinTor, respectively, for 2 d. The LT50 and relative potencies of the insecticides were in the order of Helix XTra, Capture, and SpinTor > BotaniGard, Neemix, and Surround. In 2002, LT50 values were 1 and 2 d for Capture and SpinTor, 2 d for BotaniGard, and 3 d for Neemix and Surround. In 2003, LT50 values occurred between 2 and 4 d after exposure to Helix XTra, Capture, and SpinTor, with LT50 values of 5-7 d on exposure to BotaniGard, Neemix, and Surround. SpinTor seems to be a suitable ecorational insecticide in canola, Brassica napus L., for P. cruciferae management.
开展了多项研究，将杀虫剂斯皮诺素（多杀菌素）、绿僵菌制剂（球孢白僵菌）、印楝素制剂（印楝素）和索润（高岭土，一种黏土）与传统化学杀虫剂凯普锐（联苯菊酯）和锐胜（噻虫嗪）进行比较，所有药剂均以7种剂量在一项为期7天的试验中施用，以评估它们对十字花科跳甲成虫（Phyllotreta cruciferae (Goeze)，鞘翅目：叶甲科）的影响。通过生存函数估计每种处理达到25%、50%和75%死亡率所需的致死时间（LT25、LT50和LT75）以及杀虫剂浓度分组（0、1倍 - 1.5倍和2倍 - 4倍）的相对效力。十字花科跳甲的死亡率随浓度增加而升高，尤其是对于锐胜、凯普锐和斯皮诺素。2002年暴露2天后，锐胜的死亡率在各浓度下为54%至78%，凯普锐为60%至94%，斯皮诺素为66%至92%。2003年，暴露2天后，跳甲对锐胜、凯普锐和斯皮诺素的死亡率分别为37%至60%、29%至63%和23%至52%。杀虫剂的LT50和相对效力顺序为锐胜、凯普锐和斯皮诺素 > 绿僵菌制剂、印楝素制剂和索润。2002年，凯普锐和斯皮诺素的LT50值为1天和2天，绿僵菌制剂为2天，印楝素制剂和索润为3天。2003年，暴露于锐胜、凯普锐和斯皮诺素后，LT50值在2至4天之间，暴露于绿僵菌制剂、印楝素制剂和索润时，LT50值为5 - 7天。斯皮诺素似乎是油菜（Brassica napus L.）中用于防治十字花科跳甲的一种合适的生态合理型杀虫剂。
