Laboratory Bioassays of Biological/Organic Insecticides to Control Corn Earworm on Hemp in Virginia, 2019

Britt, Kadie E; Kuhar, Thomas P.

doi:10.1093/amt/tsaa102

Cited by 2 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a similar study, Entrust (Spinosad) resulted in significantly fewer corn earworms and less damage than untreated control [ 96 ]. Furthermore, in another study, Entrust (Spinosad) resulted in a significantly higher corn earworm mortality (95%) than any other tested biological or organic insecticide products on field-collected corn earworms tested in laboratory assays after four days [ 97 ]. In a second bioassay, Pyganic and Entrust performed significantly better than all other treatments, resulting in 100% and 97.5% respective mortality in lab-reared corn earworms [ 97 ].…”

Section: Corn Earworm and Hemp: Potential Effects Of Climate Changementioning

confidence: 99%

“…Furthermore, in another study, Entrust (Spinosad) resulted in a significantly higher corn earworm mortality (95%) than any other tested biological or organic insecticide products on field-collected corn earworms tested in laboratory assays after four days [ 97 ]. In a second bioassay, Pyganic and Entrust performed significantly better than all other treatments, resulting in 100% and 97.5% respective mortality in lab-reared corn earworms [ 97 ]. A likely reason for the difference between lab-reared and wild-caught populations could be that resistance to Cry1AB Bt proteins is widespread in Virginia corn earworms [ 97 ].…”

Section: Corn Earworm and Hemp: Potential Effects Of Climate Changementioning

confidence: 99%

“…In a second bioassay, Pyganic and Entrust performed significantly better than all other treatments, resulting in 100% and 97.5% respective mortality in lab-reared corn earworms [ 97 ]. A likely reason for the difference between lab-reared and wild-caught populations could be that resistance to Cry1AB Bt proteins is widespread in Virginia corn earworms [ 97 ].…”

Section: Corn Earworm and Hemp: Potential Effects Of Climate Changementioning

confidence: 99%

See 2 more Smart Citations

Hemp Pest Spectrum and Potential Relationship between Helicoverpa zea Infestation and Hemp Production in the United States in the Face of Climate Change

Ajayi

Samuel-Foo

2021

Insects

View full text Add to dashboard Cite

There has been a resurgence in the cultivation of industrial hemp, Cannabis sativa L., in the United States since its recent legalization. This may facilitate increased populations of arthropods associated with the plant. Hemp pests target highly marketable parts of the plant, such as flowers, stalks, and leaves, which ultimately results in a decline in the quality. Industrial hemp can be used for several purposes including production of fiber, grain, and cannabidiol. Thus, proper management of pests is essential to achieve a substantial yield of hemp in the face of climate change. In this review, we provide updates on various arthropods associated with industrial hemp in the United States and examine the potential impact of climate change on corn earworm (CEW) Helicoverpa zea Boddie, a major hemp pest. For example, temperature and photoperiod affect the development and diapause process in CEW. Additionally, drought can lead to a reduction in hemp growth. Host plant diversity of CEW may prevent populations of the pest from reaching outbreak levels. It is suggested that hemp varieties resistant to drought, high soil salinity, cold, heat, humidity, and common pests and diseases should be selected. Ongoing research on effective management of CEW in hemp is critical.

show abstract

Section: Corn Earworm and Hemp: Potential Effects Of Climate Changementioning

confidence: 99%

Section: Corn Earworm and Hemp: Potential Effects Of Climate Changementioning

confidence: 99%

Section: Corn Earworm and Hemp: Potential Effects Of Climate Changementioning

confidence: 99%

See 1 more Smart Citation

Hemp Pest Spectrum and Potential Relationship between Helicoverpa zea Infestation and Hemp Production in the United States in the Face of Climate Change

Ajayi

Samuel-Foo

2021

Insects

View full text Add to dashboard Cite

show abstract

Simple Insecticide Bean-Dip Bioassay Shows Pyrethroid Susceptibility of Helicoverpa zea (Lepidoptera: Noctuidae) Populations in Virginia Varies across Locations and Years

Sutton,

Kuhar,

Rideout

et al. 2024

Journal of Entomological Science

View full text Add to dashboard Cite

Corn earworm, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae), is a major insect pest of many agricultural crops in Virginia. Pyrethroids have been the major insecticide class used to control the pest for decades; however, H. zea resistance to pyrethroids has been widely documented in the southeastern and midwestern United States. To assess the pyrethroid susceptibility of H. zea in Virginia, we collected larval populations from the same five locations in 2021 and 2022 and used a quick end user–friendly bioassay to assess survival of larvae after feeding on insecticide-dipped edamame [Glycine max (L.) Merrill] pods. Pyrethroid efficacy varied between years and locations, with some 2021 H. zea populations showing reduced pyrethroid susceptibility, but not in 2022. This variability is most likely influenced by factors such as overwintering survivability in Virginia. Thus, the need for continued annual monitoring is important to track efficacy trends and grower recommendations. The simple bean-dip bioassay could be used as an efficient monitoring tool in the future, with pyrethroid susceptibility determined in 48 h from field collection.

show abstract

Laboratory Bioassays of Biological/Organic Insecticides to Control Corn Earworm on Hemp in Virginia, 2019

Cited by 2 publications

References 0 publications

Hemp Pest Spectrum and Potential Relationship between Helicoverpa zea Infestation and Hemp Production in the United States in the Face of Climate Change

Hemp Pest Spectrum and Potential Relationship between Helicoverpa zea Infestation and Hemp Production in the United States in the Face of Climate Change

Simple Insecticide Bean-Dip Bioassay Shows Pyrethroid Susceptibility of Helicoverpa zea (Lepidoptera: Noctuidae) Populations in Virginia Varies across Locations and Years

Contact Info

Product

Resources

About