Corn Invertebrate Loss Estimates from the United States and Ontario, Canada — 2021

Reisig, Dominic; Bateman, N.; Meyer, Ron; Reay‐Jones, Francis P. F.; Studebaker, Glenn; Shields, Elson J.; Owens, D.H.; Buntin, G. David; Seiter, Nicholas J.; Hodgson, Erin W.; Sisson, Adam; Zukoff, Anthony; Villanueva, Raul T.; Towles, Tyler; Hamby, Kelly A.; DiFonzo, Chris; Hutchison, Bill; Potter, Bruce; Catchot, Angus L.; Cook, D. R.; Bradshaw, Jeffrey D.; Peterson, Julie; Beauzay, Patrick B.; Knodel, Janet J.; Tilmon, Kelly; Baute, Tracey; Varenhorst, Adam J.; Brown, Sebe; Kerns, David L.; Porter, Pat; Taylor, Sally; Jensen, Bryan

doi:10.31274/cpn-20220722-0

Cited by 2 publications

(4 citation statements)

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“…Additionally, spatial patterns of stink bug injury were negatively associated with H. zea larvae and injury in a small number of cases, indicating some type of competition between these two pests in corn or differences in host selection behaviors relative to plant phenology. The spatial patterns of H. zea in field corn have only been sparsely described (Ni et al 2011, 2014), and this is the first study that demonstrates spatial relationships between H. zea larvae and injury and plant phenology, as well as stink bugs, which are the most important pest group in corn in the southeastern United States (Reisig et al 2021).…”

Section: Discussionmentioning

confidence: 99%

“…In addition to H. zea , a complex of stink bugs (Hemiptera: Pentatomidae), namely Euschistus servus (Say) and Nezara viridula (L.), are common and important economic pest species in field corn in the southeastern United States (Reisig et al 2021). Stink bug feeding on field corn during the late vegetative stages of development (i.e., V10–VT) leads to the development of misshapen or “banana-shaped” ears and a reduction in yield (Clower 1958, Bryant et al 2020).…”

Section: Introductionmentioning

confidence: 99%

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Within-field spatial patterns of Helicoverpa zea (Lepidoptera: Noctuidae) and spatial associations with stink bugs and their injury in field corn

Bryant,

Greene,

Reay-Jones

2023

Journal of Economic Entomology

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The corn earworm, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae), is a cosmopolitan pest in the field crop landscape in the southeastern United States. Field corn (Zea mays L.) is the most important midseason host for H. zea where intensive selection pressure occurs for resistance to insecticidal toxins from Bacillus thuringiensis (Bt). Because spatial patterns of H. zea in field corn have not been extensively studied, field corn was sampled for H. zea larvae and injury in 2021 and 2022. Patterns of spatial aggregation were identified in a number of fields in both larval populations and injury. Aggregation of H. zea larvae was less common at R5 than at R2. Associations between the spatial patterns of H. zea and the variability in crop phenology were identified in some fields, with positive associations between plant height and H. zea larvae, indicating that ovipositing H. zea moths avoid areas with reduced plant height and delayed reproductive maturity. Additionally, negative spatial associations between stink bug ear injury and H. zea larvae and their injury were found in a small number of cases, indicating some spatial interactions between the two pest complexes and their injury. Results from these studies provide valuable insight into the spatial patterns of H. zea in field corn. An understanding of the local dispersal and population dynamics of H. zea can be used to help further improve integrated pest management and insect resistance management programs for this major polyphagous pest.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Within-field spatial patterns of Helicoverpa zea (Lepidoptera: Noctuidae) and spatial associations with stink bugs and their injury in field corn

Bryant,

Greene,

Reay-Jones

2023

Journal of Economic Entomology

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“…Field corn, Zea mays L. (Poales: Poaceae) , is the most important cereal crop in the United States, accounting for around 13 million hectares of farmland in 2022 (USDA NASS 2022). Insect pests have the potential to be yield limiting in corn, and a complex of stink bugs are the most common and damaging pests of concern to growers in the southeastern United States (Reisig et al 2021). Of this complex of species, the brown stink bug, Euschistus servus (Say), and southern green stink bug, Nezara viridula (L.), are the most common in corn (Tillman 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Stink bugs can be present in field corn throughout the season, but corn is most susceptible to injury and subsequent yield loss from feeding during the early vegetative stages (VE-V6) and the late vegetative stages through early reproductive stages (V10-R1) (Clower 1958, Negrón and Riley 1987, Apriyanto et al 1989a, Bryant et al 2020. During early vegetative stages, stink bug feeding leads to a number of different growth deformities, including stunting, leaf holes, or tillering, and can cause plant death if feeding is severe (Apriyanto et al 1989a, 1989b, Bryant et al 2020, 2021. Corn ear initiation begins around V6, and the maximum yield potential is fully determined prior to tasseling (i.e., VT) (Lejeune and Bernier 1996).…”

Section: Introductionmentioning

confidence: 99%

Within-field spatial patterns of Euschistus servus and Nezara viridula (Hemiptera: Pentatomidae) in field corn

Bryant

Greene

Reay‐Jones

2023

Environmental Entomology

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A complex of stink bugs, primarily the brown stink bug, Euschistus servus (Say) (Hemiptera: Pentatomidae) , and the southern green stink bug, Nezara viridula (L.) (Hemiptera: Pentatomidae) , are the most damaging insect pests of field corn, Zea mays L., in the southeastern United States. Characterizing the spatial patterns of these highly mobile, polyphagous pests is critical for developing efficient and effective sampling plans. In 2021 and 2022, stink bugs and their injury were assessed biweekly from emergence through R2 in 20 corn fields. The spatial analysis by distance indices (SADIE) showed that aggregation patterns were identified primarily in adult populations of both E. servus and N. viridula, and in nymphal populations of both species to a lesser extent. Aggregation patterns were also identified in early vegetative injury, but not in ear injury assessed at R2. The spatial association of stink bugs and their injury varied with corn phenological stage. A lack of spatial association between stink bug populations early in the season and vegetative injury suggests a need for intensive sampling, particularly in fields with increased residue from cover crops. Results of this study illustrate the variability in spatial patterns of stink bugs in corn, which can help to improve sampling plans for decision-making in IPM programs.

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Corn Invertebrate Loss Estimates from the United States and Ontario, Canada — 2021

Cited by 2 publications

References 0 publications

Within-field spatial patterns of Helicoverpa zea (Lepidoptera: Noctuidae) and spatial associations with stink bugs and their injury in field corn

Within-field spatial patterns of Helicoverpa zea (Lepidoptera: Noctuidae) and spatial associations with stink bugs and their injury in field corn

Within-field spatial patterns of Euschistus servus and Nezara viridula (Hemiptera: Pentatomidae) in field corn

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