The sugarcane aphid, Melanaphis sacchari is an important pest of grain sorghum (Sorghum bicolor) in the United States. Current M. sacchari management programs aim to control M. sacchari with insecticides while minimizing impacts on natural enemies that contribute to biological control of aphid populations. As a result, balancing both insecticide efficacy on the target pest and preservation of biological control agents remains an important step toward sustainable management of M. sacchari in grain sorghum. To document tradeoffs between M. sacchari control and non-target impacts, we evaluated three common aphicides (afidopyropen, flupyradifurone, and sulfoxaflor) for M. sacchari control and natural enemy safety. Treatments were paired with surfactants when recommended. Insect abundance was measured before and after foliar insecticide application using randomized complete clock design small plot studies during the 2019 and 2020 field seasons. All plots were harvested at maturity to document the relationship between in-season aphid abundance and grain yield. In this two year study, the average aphid abundance three days after insecticide application was lower in some but not all insecticidal treatments when compared to the untreated control, suggesting some insecticides had limited aphid suppression capabilities. Mean cumulative aphid days were lower in all treated plots compared to the untreated control with the exception of Sefina (afidopyropen). Twenty-eight days after foliar insecticide application, there were no differences in total natural enemy abundance in any of the treatments including the untreated control, suggesting that while M. sacchari populations were reduced by foliar insecticide treatments, the insecticides did not have clear adverse effects to natural enemy populations.

甘蔗蚜虫Melanaphis sacchari是美国高粱 ( Sorghum bicolor )的重要害虫。当前的糖分枝杆菌管理计划旨在用杀虫剂控制糖分枝杆菌，同时最大限度地减少对有助于对蚜虫种群进行生物控制的天敌的影响。因此，平衡杀虫剂对目标害虫的功效和生物防治剂的保存仍然是实现高粱中糖分枝杆菌可持续管理的重要一步。为了记录糖分枝杆菌控制和非目标影响之间的权衡，我们评估了三种常见的蚜虫剂（afidopyropen、flupyradifurone 和 sulfoxaflor）M. sacchari控制和天敌安全。当推荐时，治疗与表面活性剂配对。在 2019 年和 2020 年田间季节期间，使用随机完整时钟设计小地块研究测量叶面杀虫剂施用前后的昆虫丰度。所有地块都在成熟时收获，以记录当季蚜虫丰度与谷物产量之间的关系。在这项为期两年的研究中，与未处理的对照相比，在某些但并非所有杀虫处理中，杀虫剂施用三天后的平均蚜虫丰度较低，这表明某些杀虫剂抑制蚜虫的能力有限。与未处理的对照相比，除 Sefina (afidopyropen) 外，所有处理地块的平均累积蚜虫天数都较低。叶面杀虫剂施用后二十八天，M. sacchari种群被叶面杀虫剂处理减少，杀虫剂对天敌种群没有明显的不利影响。