Uyi Osariyekemwen, Reay-Jones Francis P F, Ni Xinzhi, Buntin David, Jacobson Alana, Punnuri Somashekhar, Toews Michael D
Department of Entomology, University of Georgia, 2360 Rainwater Rd., Tifton, GA 31793, USA.
Department of Animal and Environmental Biology, University of Benin, PMB 1154, Benin City 300001, Nigeria.
Insects. 2022 Nov 10;13(11):1038. doi: 10.3390/insects13111038.
Studies on the management of the invasive are essential to refining integrated pest management strategies against in forage sorghum in the USA. The objective of this study was to determine the impact of planting date (early planting and late planting) and in-furrow and foliar insecticide application of , on infestation and forage sorghum yield in Tifton, Georgia and Florence, South Carolina, USA, in 2020 and 2021. Early planted sorghum supported slightly higher aphid density and severity of infestation as evident in the greater cumulative insect days values in the early planted sorghum at both Florence and Tifton in 2020 and 2021. A single foliar application reduced aphid infestations below the threshold level of 50 aphids per leaf. In contrast, in-furrow insecticidal application in selected plots at both locations significantly suppressed density to near-zero levels. Yield results in Florence in 2020 showed that sorghum yield was over 50% greater in early planted plots compared to late planted plots. Both insecticide treatments (foliar and in-furrow) resulted in significantly higher yield than untreated plots. These data indicate that early planting coupled with in-furrow and foliar insecticide applications can suppress infestations and improve silage production in forage sorghum in the USA.
对入侵害虫管理的研究对于完善美国饲用高粱针对该害虫的综合虫害管理策略至关重要。本研究的目的是确定种植日期（早播和晚播）以及沟施和叶面喷施杀虫剂对2020年和2021年美国佐治亚州蒂夫顿和南卡罗来纳州佛罗伦萨的饲用高粱上该害虫的侵染情况和饲用高粱产量的影响。早播高粱的蚜虫密度和侵染严重程度略高，2020年和2021年在佛罗伦萨和蒂夫顿早播高粱上累积昆虫日数值更高就证明了这一点。单次叶面喷施可将蚜虫侵染率降低至每片叶50头蚜虫的阈值水平以下。相比之下，在两个地点的选定地块进行沟施杀虫剂可将该害虫密度显著抑制至接近零的水平。2020年佛罗伦萨的产量结果表明，早播地块的高粱产量比晚播地块高出50%以上。两种杀虫剂处理（叶面喷施和沟施）的产量均显著高于未处理地块。这些数据表明，早播结合沟施和叶面喷施杀虫剂可以抑制美国饲用高粱上该害虫的侵染并提高青贮产量。
