Results:
43 publication requests found.
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Integration of physical and chemical tactics for managing Systena frontalis at ornamental nurseries
The Red-headed Flea Beetle [Systena frontalis (F.); RHFB] is native to the central and eastern U.S. and has become a costly multivoltine pest of containerized nursery plants. We tested discs of long-lasting insecticidal netting (LLIN) secured over rims of plant containers in spring of 2023, using fo...
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Seasonal abundance and diversity of potential Xylella (Xanthomonadales: xanthomonadaceae) vectoring leafhoppers in Mississippi muscadine vineyards
Pierce’s disease remains an important economic problem for producers of wine grapes, and while muscadine grapes do exhibit resistance, stressed or weakened vines can be more susceptible. Vector management may be a useful tool in limiting the pathogen spread within a vineyard, but knowledge of leafho...
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Sensitivity to imidacloprid insecticide varies among some social and solitary bee species of agricultural value
Bioassays using Apis and wild non-Apis species with differing natural histories tested the health effects of sublethal concentrations of imidacloprid on bee longevity and paralysis. Species were chosen for their high abundance and differences in sociality, floral specialization, age, and sex. Throug...
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Integration of physical and chemical tactics for managing Systena frontalis at ornamental nurseries
The Red-headed Flea Beetle [Systena frontalis (F.); RHFB] is native to the central and eastern U.S. and has become a costly multivoltine pest of containerized nursery plants. We tested discs of long-lasting insecticidal netting (LLIN) secured over rims of plant containers in spring of 2023, using fo...
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The silver bullet that wasn’t: rapid agronomic weed adaptations to glyphosate in North America
The rapid adoption of glyphosate-resistant (GR) corn, cotton, and soybean at the end of the 20th century led to a simplification of weed management systems that relied heavily, in some cases exclusively, on glyphosate for weed control. Glyphosate efficacy has changed, and a greater understanding of ...
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Insecticidal activity of Jatropha extracts against the azalea lace bug, Stephanitis pyrioides (Hemiptera: Tingidae)
We assessed bioactivity of ethanolic extracts from 35 species of Jatropha against an ornamental plant pest, the azalea lace bug, Stephanitis pyrioides (Scott). Jatropha extracts were prepared by air-drying stem, root, or whole plant material, grinding the tissue into a fine powder, adding 70% ethano...
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Surviving the summer dearth: Managed and wild bees utilize soybeans during a resource poor season
Bee declines are being driven by a combination of factors, and some potential responses we can take include establishment of wildflower habitats among croplands and provision of late-season forage when resources are becoming scarce. We tested three trap types and three trap colors for monitoring pol...
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Seasonal abundance and diversity of potential Xylella (Xanthomonadales: xanthomonadaceae) vectoring leafhoppers in Mississippi muscadine vineyards
Pierce’s disease remains an important economic problem for producers of wine grapes, and while muscadine grapes do exhibit resistance, stressed or weakened vines can be more susceptible. Vector management may be a useful tool in limiting the pathogen spread within a vineyard, but knowledge of leafho...
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Impacts of shade treatments on dormancy of overwintering redbud (Cercis canadensis L.) trees at southeastern nurseries.
Winter dormancy is an important part of the natural process that trees use to protect against cold injury and other ensuing problems. Using potted eastern redbud (Cercis canadensis L.) trees placed under two types of shade cloth, under full sun, or in walk-in coolers, we looked for differences in st...
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Insecticidal activity of jatropha extracts against the azalea lace bug, stephanitis pyrioides (Hemiptera: Tingidae)
We assessed insecticidal activity of ethanolic extracts from 35 species of Jatropha against an ornamental plant pest, the azalea lace bug, Stephanitis pyrioides (Scott). Fresh shoots and roots were harvested, air-dried, and processed to a fine powder. Ethanolic extracts were then prepared, emulsifie...
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Interception strategies for managing exotic ambrosia beetles (Coleoptera: Curculionidae) in nurseries
Exotic ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) are damaging pests of ornamental tree nurseries and other tree crops in North America. Management is based on keeping trees healthy and trunk sprays of insecticides to prevent colonization attempts. The current research tested ethanol...
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Sublethal concentrations of clothianidin affect honey bee colony growth and hive CO2 concentration
The effects of agricultural pesticide exposure upon honey bee colonies is of increasing interest to beekeepers and researchers, and the impact of neonicotinoid pesticides in particular has come under intense scrutiny. To explore potential colony-level effects of a neonicotinoid pesticide at field-re...
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Sublethal concentrations of clothianidin affect honey bee colony growth and hive CO2 concentration
The efects of agricultural pesticide exposure upon honey bee colonies is of increasing interest to beekeepers and researchers, and the impact of neonicotinoid pesticides in particular has come under intense scrutiny. To explore potential colony-level efects of a neonicotinoid pesticide at feld-relev...
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Long-lasting insecticide netting for protecting tree stems from attack by ambrosia beetles (Coleoptera: Curculionidae: Scolytinae)
Ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) are destructive wood-boring pests of horticultural trees. Since attacks mainly occur on the stems, we evaluated long-lasting insecticide netting for protecting against opportunistic ambrosia beetles. Cercis canadensis were flood-stressed to in...
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Evaluating global Vaccinium germplasm for resistance against invasive Drosophila suzukii (Diptera: Drosophilidae)
Integrated Pest Management (IPM) of spotted wing Drosophila (SWD) in fruits and berries emphasizes biological, cultural, and chemical control. Little research has focussed on genetic control via host plant resistance. Identifying resistant germplasm and patterns of host plant resistance are crucial ...
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Bee natural history traits affect pollinator sensitivity to imidacloprid insecticide
Bioassays using Apis and wild non-Apis species with differing natural histories tested the health effects of sublethal concentrations of imidacloprid on bee longevity and paralysis. Species were chosen for their high abundance and differences in sociality, floral specialization, age, and sex. Throug...
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Trap tree and interception trap techniques for management of ambrosia beetles (Coleoptera: Curculionidae) in nursery production
Wood-boring ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) are strongly attracted to ethanol, which could potentially be exploited for management within ornamental nurseries. A series of experiments were conducted to determine if ethanol-based interception techniques could reduce ambrosia ...
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Erythritol and two of its derivatives reduce survival and reproductive rate of a serious blueberry pest, Drosophila suzukii (Diptera: Drosophilidae)
Effective control of D. suzukii during harvest requires weekly applications of low-residual, broad-spectrum insecticides unavailable for organic farming. A novel ingestible insecticide, a 4-carbon polyol, mesoerythritol (erythritol), was found to kill 75% to 100% of larval and aduld SWD. However, me...
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Laboratory assessment of erythritol derivatives on the survival and reproductive rate of Drosophila suzukii (Diptera: Drosophilidae)
Drosophila suzukii (Matsumura) is a vinegar fly species native to Asia. Since its accidental introduction into the United States in 2008, this fly has reduced annual berry yields anywhere from 6% – 100%. Controlling the size of D. suzukii populations during harvest requires weekly applications of lo...
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A Role for Intercept Traps in the Ambrosia Beetle (Coleoptera: Curculionidae: Scolytinae) IPM Strategy at Ornamental Nurseries
Invasive ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) cause significant damage to ornamental nursery tree crops throughout the Eastern U. S. Depending on surrounding habitat, some nurseries can undergo large influxes of ambrosia beetles from the forest to susceptible nursery stock. Eth...
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