The peachtree borer, Synanthedon exitiosa, and lesser peachtree borer, S. pictipes, are economically important indirect pests of peach in West Virginia. The purpose of this 3-year study was to compare the efficacy of mating disruption and post-harvest trunk sprays of chlorpyrifos insecticide for control of this pest complex in a commercial peach orchard. Overall, Isomate PTB-Dual disruption dispensers applied at a rate of 371/ha significantly disrupted the male mate-finding behavior of S. exitiosa and S. pictipes. In addition, the infestation of peach trees by S. exitiosa larvae did not vary significantly between mating disruption and insecticide treated plots. Hot-spot maps of S. exitiosa infestation showed significant spatial clusters of infestation predominately near the perimeter of all orchard plots, or where trees were missing within and/or between rows. The generation of standard deviational ellipses revelated that the location of S. exitiosa infestations in orchard plots remained relatively constant between years, and were generally oriented in a north and easterly direction, which coincided with the prevailing wind direction. Although our data indicated that mating disruption can provide growers with an effective non-chemical alternative to chlorpyrifos trunk sprays, several variables may affect its long-term success in West Virginia peach orchards; most notably the presence of high population densities, problems with maintaining adequate pheromone coverage, and the need for area-wide implementation.

中文翻译：

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交配干扰和杀虫剂控制桃子Bor和小桃tree（鳞翅目：Se科）的比较

在西弗吉尼亚州，桃树蛀虫Synanthedon exitiosa和次要桃树蛀虫S. pictipes是桃子在经济上重要的间接害虫。这项为期3年的研究的目的是比较毒死rif杀虫剂的交配破坏和收获后树干喷雾剂对商业桃园中这种害虫复合物的控制效果。总体而言，以371 / ha的比例施用Isomate PTB-Dual破坏分配器会极大地破坏S. exitiosa和S. pictipes的雄性寻觅行为。此外，在交配破坏和杀虫剂处理的地块之间，出口链球菌幼虫对桃树的侵害没有显着变化。S. exitiosa热点地图侵染表现出明显的侵扰性空间集群，主要集中在所有果园地块的周边，或行内和/或行之间缺少树木的地方。标准偏差椭圆的产生揭示了S. exitiosa的位置果园地中的虫害数年间保持相对恒定，并且通常定向为北风和东风，这与盛行的风向一致。尽管我们的数据表明交配破坏可以为种植者提供毒死rif树干喷剂的有效非化学替代品，但一些变量可能会影响其在西弗吉尼亚桃园的长期成功。最值得注意的是，人口密度高，信息素覆盖率保持适当的问题以及在区域范围内实施的必要性。