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Broflanilide, a Meta-Diamide Insecticide Seed Treatment for Protection of Wheat and Mortality of Wireworms (Agriotes obscurus) in the Field
Journal of Economic Entomology ( IF 2.2 ) Pub Date : 2020-11-03 , DOI: 10.1093/jee/toaa239
Willem G van Herk 1 , Robert S Vernon 2 , Lindsey Goudis 3 , Terisha Mitchell 1
Affiliation  

Following the deregistration of lindane, several neonicotinoid insecticides have been registered as seed treatments for controlling wireworms in cereal crops. Unlike lindane, which did both, neonicotinoids provide crop protection but do not reduce wireworm populations. Hence populations of various economic species are growing in key wheat production areas of the United States and Canada, and there is a need for novel seed treatments that match the efficacy of lindane. Herein we evaluated broflanilide, a novel GABA-gated Cl- channel allosteric modulator that differs from the cyclodienes (e.g., lindane) in that it binds to a unique site in the GABA receptor. As such, broflanilide confers a new mode of insecticidal action (Group 30 MOA), and is the first meta-diamide insecticide developed. When evaluated in field trials over 7 yr at various rates, broflanilide at 5.0 g [AI]/100 kg wheat seed was as effective at protecting wheat stand from wireworm (Agriotes obscurus) injury as the current industry standard thiamethoxam at 20-30 g [AI]/100 kg seed. In addition, broflanilide at 5.0 g reduced neonate wireworms (produced from eggs laid in established wheat during the growing season) and resident wireworms (in the field at time of planting) by 73.1 and 81.1%, respectively, which is comparable to that reported for the previous industry standard lindane (75.3 and 57.6%, respectively). These studies show that broflanilide at 5.0 g [AI] will provide consistent wheat stand protection (equal to thiamethoxam at 20-30 g [AI]), and A. obscurus wireworm population reduction (equal to lindane at 59 g [AI]), and will do so at far lower dosages per hectare.

中文翻译:

Broflanilide,一种间二酰胺杀虫剂种子处理剂,用于保护小麦和田间线虫(Agriotes obscurus)的死亡率

林丹注销后,几种新烟碱类杀虫剂已被注册为用于控制谷类作物线虫的种子处理剂。与林丹两者兼而有之,新烟碱类化合物可提供作物保护,但不会减少线虫种群。因此,在美国和加拿大的主要小麦产区,各种经济物种的种群正在增长,因此需要与林丹功效相匹配的新型种子处理方法。在本文中,我们评估了溴氟苯胺,一种新型 GABA 门控 Cl 通道变构调节剂,与环二烯(例如林丹)的不同之处在于它与 GABA 受体中的一个独特位点结合。因此,溴氟苯胺赋予了一种新的杀虫作用模式(第 30 组 MOA),并且是第一种开发的间二酰胺杀虫剂。在超过 7 年的现场试验中以不同的速率进行评估时,5.0 g [AI]/100 kg 小麦种子的溴苯胺与当前行业标准 20-30 g [AI]/100 kg 种子的噻虫嗪一样有效地保护小麦林免受线虫(Agriotes obscurus)伤害。此外,5.0 g 的溴氟苯胺使新生线虫(由生长季节成熟小麦产卵产生)和常驻线虫(种植时在田间)分别减少 73.1% 和 81.1%,与报告的结果相当之前的行业标准林丹(分别为 75.3% 和 57.6%)。这些研究表明,5.0 克 [AI] 的溴氟苯胺将提供一致的麦田保护(相当于 20-30 克 [AI] 的噻虫嗪),并减少 A. obscurus 线虫种群(相当于 59 克 [AI] 的林丹),并且每公顷的剂量要低得多。0 g [AI]/100 kg 小麦种子与当前行业标准噻虫嗪 20-30 g [AI]/100 kg 种子一样有效地保护小麦林免受线虫(Agriotes obscurus)伤害。此外,5.0 g 的溴氟苯胺使新生线虫(由生长季节成熟小麦产卵产生)和常驻线虫(种植时在田间)分别减少 73.1% 和 81.1%,与报告的结果相当之前的行业标准林丹(分别为 75.3% 和 57.6%)。这些研究表明,5.0 克 [AI] 的溴氟苯胺将提供一致的麦林保护(相当于 20-30 克 [AI] 的噻虫嗪),并减少 A. obscurus 线虫种群(相当于 59 克 [AI] 的林丹),并且每公顷的剂量要低得多。0 g [AI]/100 kg 小麦种子与当前行业标准噻虫嗪 20-30 g [AI]/100 kg 种子一样有效地保护小麦林免受线虫(Agriotes obscurus)伤害。此外,5.0 g 的溴氟苯胺使新生线虫(由生长季节成熟小麦产卵产生)和常驻线虫(种植时在田间)分别减少 73.1% 和 81.1%,与报告的结果相当之前的行业标准林丹(分别为 75.3% 和 57.6%)。这些研究表明,5.0 克 [AI] 的溴氟苯胺将提供一致的麦田保护(相当于 20-30 克 [AI] 的噻虫嗪),并减少 A. obscurus 线虫种群(相当于 59 克 [AI] 的林丹),并且每公顷的剂量要低得多。
更新日期:2020-11-03
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