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The Impact of Brown Stink Bug (Hemiptera: Pentatomidae) Damage during the Seedling Stage on Field Corn Growth and Yield
Journal of Economic Entomology ( IF 2.2 ) Pub Date : 2021-05-03 , DOI: 10.1093/jee/toab098
William C Hardman 1, 2 , Angus L Catchot 2 , Jeffrey Gore 1, 2 , W B Henry 3 , Don R Cook 1, 2
Affiliation  

Brown stink bug, Euschistus servus (Say) (Hemiptera: Pentatomidae), is a common insect that can infest corn fields in the Mid-South and Southeastern U.S. Infestations and damage are sporadic, thus little research has been conducted on the impact of brown stink bug infesting corn seedlings. Two experiments were conducted in eleven commercial corn fields in the Mississippi Delta to evaluate the impact of damage from natural stink bug infestations during the seedling stage (<V4) on corn yield and growth during 2018 and 2019. Single plants and 3-meter sections of the row were marked at each location. Plant damage for the single plant experiment was rated on a 0–3 scale and every single plant was given a damage rating based on visible symptomology. As damage severity increased, plant height and yield decreased. Some plants with the most severe damage did not produce any grain. At each location, sections of row (plots) with 0%, 10%, 20%, 30%, or 40% damaged plants were identified. All levels of damaged plants resulted in lower yield compared to the nondamaged control. These results demonstrate the brown stink bug infestations during the seedling stage (<V4) can reduce corn yield. The magnitude of yield reductions can be dependent on several factors including the severity of damage to individual plants and the percentage of plants with damage within the field. Although detecting infestations with current scouting methods is difficult, fields should be scouted and infestations managed to minimize yield loss.

中文翻译:

褐蝽(半翅目:蝽科)苗期危害对大田玉米生长和产量的影响

褐蝽,Euschistus servus (Say) (半翅目:蝽科),是一种常见的昆虫,可侵染美国中南部和东南部的玉米田虫害玉米幼苗。在密西西比三角洲的 11 个商业玉米田中进行了两项实验,以评估 2018 年和 2019 年幼苗期 (<V4) 天然蝽侵扰对玉米产量和生长的影响。单株和 3 米截面在每个位置都标记了行的。单株植物试验的植物损伤等级为 0-3,每株植物均根据可见症状进行损伤等级评定。随着损害严重程度的增加,株高和产量下降。一些受损最严重的植物没有产生任何谷物。在每个位置,确定了具有 0%、10%、20%、30% 或 40% 受损植物的行(地块)部分。与未受损的对照相比,所有水平的受损植物均导致产量降低。这些结果表明在幼苗期(<V4)的褐蝽侵染会降低玉米产量。产量减少的幅度可能取决于几个因素,包括单个植物受损的严重程度和田间受损植物的百分比。尽管用目前的侦察方法检测虫害很困难,但应该对田地进行侦察并管理虫害,以尽量减少产量损失。与未受损的对照相比,所有水平的受损植物均导致产量降低。这些结果表明在幼苗期(<V4)的褐蝽侵染会降低玉米产量。产量减少的幅度可能取决于几个因素,包括单个植物受损的严重程度和田间受损植物的百分比。尽管用目前的侦察方法检测虫害很困难,但应该对田地进行侦察并管理虫害,以尽量减少产量损失。与未受损的对照相比,所有水平的受损植物均导致产量降低。这些结果表明在幼苗期(<V4)的褐蝽侵染会降低玉米产量。产量减少的幅度可能取决于几个因素,包括单个植物受损的严重程度和田间受损植物的百分比。尽管用目前的侦察方法检测虫害很困难,但应该对田地进行侦察并管理虫害,以尽量减少产量损失。产量减少的幅度可能取决于几个因素,包括单个植物受损的严重程度和田间受损植物的百分比。尽管用目前的侦察方法检测虫害很困难,但应该对田地进行侦察并管理虫害,以尽量减少产量损失。产量减少的幅度可能取决于几个因素,包括单个植物受损的严重程度和田间受损植物的百分比。尽管用目前的侦察方法检测虫害很困难,但应该对田地进行侦察并管理虫害,以尽量减少产量损失。
更新日期:2021-05-03
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