Browsing by Author "Doughty, Hélène"

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    2014 Commercial Vegetable Production Recommendations
    Reiter, Mark S.; Rideout, Steven L.; Kuhar, Thomas P.; Wilson, Henry P.; Parkhurst, James A.; Straw, Allen; Samtani, Jayesh B.; Gu, Ganyu; Mullins, Chris; Hines, Thomas E.; Waldenmaier, Christine M.; Doughty, Hélène; Mason, John E.; Freeman, Josh H. (Virginia Cooperative Extension, 2014-02-19)
    New varieties and strains of vegetables are constantly being developed throughout the world and it is impossible to list and describe all of them, only those that are available and are adapted to the mid-Atlantic region are listed in this publication. The ultimate value of a variety for a particular purpose is determined by the grower: performance under his or her management adaptation to specific environmental conditions, and having desired horticultural characteristics.
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    Arthropod Pest Management Research on Vegetables in Virginia - 2010
    Kuhar, Thomas P.; Schultz, Peter B.; Doughty, Hélène; Jenrette, James (Virginia Cooperative Extension, 2011-02-22)
    Describes arthropod pest management research on vegetable crops including evaluation of federally-labelled and experimental insecticides.
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    Arthropod Pest Management Research on Vegetables in Virginia - 2011
    Kuhar, Thomas P.; Schultz, Peter B.; Doughty, Hélène; Kamminga, Katherine; Jenrette, James (Virginia Cooperative Extension, 2012-02-01)
    Describes arthropod pest management research on vegetable crops including evaluation of federally-labelled and experimental insecticides.
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    Arthropod Pest Management Research on Vegetables in Virginia--2013
    Kuhar, Thomas P.; Schultz, Peter B.; Doughty, Hélène; Jenrette, James (Virginia Cooperative Extension, 2014)
    This booklet contains arthropod pest management research conducted on vegetable crops in Virginia in 2013.
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    Cabbage Webworm, Lepidoptera, Hellula rogatalis (Hulst)
    Reiter, Sara; Kuhar, Thomas P.; Doughty, Hélène (Virginia Cooperative Extension, 2005-09-01)
    Describes life cycle of Cabbage Webworm, its damage to crops and methods of control
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    Colorado Potato Beetle Foliar Insecticide Menu for Potato Growers: Don’t wait, it’s smart to rotate
    Kuhar, Thomas P.; McCullough, Chris T.; Doughty, Hélène (Virginia Cooperative Extension, 2021)
    Neonicotinoids such as Admire Pro, Platinum, etc., are often used at-planting and should not be followed by a foliar application of a neonicotinoid due to resistance development in Colorado potato beetle. The Colorado potato beetle has developed resistance to more than 50 insecticides. Switching among IRAC groups is a good resistance management strategy to slow the development of resistance.
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    Combining Agronomic and Pest Studies to Identify Vegetable Soybean Genotypes Suitable for Commercial Edamame Production in the Mid-Atlantic U.S.
    Lord, Nick; Kuhar, Thomas P.; Rideout, Steven L.; Sutton, Kemper L.; Alford, Adam M.; Li, Xiaoying; Wu, Xingbo; Reiter, Mark S.; Doughty, Hélène; Zhang, Bo (Scientific Research Publishing, 2021)
    Currently, domestic production of vegetable soybean (aka “edamame”) lags well behind consumer demand, with approximately 70% of U.S.-consumed edamame imported each year. A major barrier for growth of the U.S. edamame industry is an overall lack of varieties with adequate consumer acceptability and adaption to the U.S. climate and environment. In this study, we evaluated eleven vegetable soybean genotypes (including one commercial check) for differences in yield, pod size, and resistance to local insect, bacterial, and fungal pressures in order to identify genotypes with the greatest potential for use in commercial edamame production. Although there were variations in average pod length (42.1 - 53.6 mm), width (10.9 - 12.7 mm), and thickness (6.29 - 7.34 mm) among the genotypes, only pod length showed statistical significance. In addition, genotype significantly affected fresh pod yield. The prevalence of specific insect pests varied by location and year and included soybean aphid, potato leafhopper, Mexican bean beetle, as well as a complex of stink bugs and lepidopteran larvae. For each of these insect pests, significant differences were observed. Some plant diseases observed on the edamame genotypes included: downy mildew, bacterial pustule, Fusarium pod rot, Cercospora blight and purple seed stain, and damping off. In 2018, in Whitethorne, VA, soybean downy mildew was quite prevalent and disease symptoms varied considerably. Overall, genotypes V16-0524 and R15-10280 showed particularly favorable yield, and resilience to native pests compared to the commercial check, UA-Kirksey. The genotypes V16-0524 and R15-10280 showed strong potential to increase the availability of varieties that can be used for commercial edamame production in the Mid-Atlantic region.
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    Corn earworm monitoring in commercial sweet corn fields in Virginia, 2017
    Kuhar, Thomas P.; Romelczyk, Stephanie; Doughty, Hélène; Few, John; Sutphin, Mark; Deitch, Ursula T.; Love, Kenner; Maxey-Nay, Laura Michele; Cooper, Jason; Pottorff, Steve; Catron, Katlyn; Siegle, Laura (Virginia Cooperative Extension, 2018-03-05)
    Discusses the monitoring of the corn earworm in sweet corn fields. This pest is the most significant pest impacting sweet corn in Virginia.
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    Corn Earworm on Vegetables
    Kuhar, Thomas P.; Philips, Chris; Doughty, Hélène; Alford, Adam M.; Day, Eric R. (Virginia Cooperative Extension, 2019-03-25)
    Describes life cycle of Corn Earworm, and its damage to many vegetable crops. Also provides information about monitoring crops for the caterpillars, and methods of control.
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    Corn Earworm on Vegetables
    Kuhar, Thomas P.; Philips, Chris; Doughty, Hélène; Day, Eric R. (Virginia Cooperative Extension, 2011-03-22)
    Describes life cycle of Corn Earworm (Helicoverpa zea) and it damage to many vegetable crops. Also provides information about monitoring crops for the caterpillars, and methods of controlling this pest species.
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    Green Peach Aphid on Vegetables: Homoptera: Aphididae, Myzus persicae
    Kuhar, Thomas P.; Reiter, Sara; Doughty, Hélène (Virginia Cooperative Extension, 2005-09-01)
    Describes the Green Peach Aphid (Myzus persicae), its life cycle, and its damage to crops. Also lists a few of the crop plants that it feeds on.
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    Insecticide and Acaricide Research on Vegetables in Virginia, 2016
    Kuhar, Thomas P.; Doughty, Hélène (Virginia Cooperative Extension, 2016-12-14)
    Reports on field studies of insecticides and acaricides used on vegetable crops in Virginia in 2016. Procedures for application of the chemicals are noted for the different crops, mortality was assessed, and data then analyzed.
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    Insecticide and Acaricide Research On Vegetables In Virginia, 2017
    Kuhar, Thomas P.; Doughty, Hélène (Virginia Cooperative Extension, 2018-12-17)
    Discusses field studies of insecticides and acaricides used on vegetable crops in Virginia in 2017. Procedures for application of the chemicals are noted for the different crops, mortality was assessed, and data analyzed.
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    Insecticide and Acaricide Research Summary on Vegetables In Virginia - 2018
    Kuhar, Thomas P.; Doughty, Hélène (Virginia Cooperative Extension, 2019-02-13)
    Discusses field studies of insecticides and acaricides used on vegetable crops in Virginia in 2018. Procedures for application of the chemicals are noted for the different crops, mortality was assessed, and data analyzed.
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    Leaf-footed Bugs
    Kuhar, Thomas P.; Jenrette, James; Doughty, Hélène (Virginia Cooperative Extension, 2010)
    Describes Leaf-footed Bugs, particularly two species common in Virginia, Leptoglossus oppositus, and L. phyllopus. Document covers their life history, damage to crops, and methods of control.
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    Mid-Atlantic Commercial Vegetable Production Recommendations, 2019
    Arancibia, R. A.; Kuhar, Thomas P.; Langston, David B.; Reiter, Mark S.; Rideout, Steven L.; Samtani, Jayesh B.; Strawn, Laura K.; Reiter, Scott; Doughty, Hélène (Virginia Cooperative Extension, 2019-01-25)
    Provides current information for commercial vegetable growers to assist in choices about vegetable varieties, pesticides, equipment, irrigation, fertilizer, and cultural practices.
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    Performance of Insecticides on Brown Marmorated Sting Bug on Vegetables
    Kuhar, Thomas P.; Doughty, Hélène; Kamminga, Katherine; Philips, Chris; Aigner, John D.; Wallingford, Anna K.; Wimer, Adam Francis; Lilliston, Logan; Aigner, Benjamin L.; Nottingham, Louis B.; Lohr, Ashley; Fread, Elizabeth; Jenrette, James (Virginia Cooperative Extension, 2011)
    Lists the rankings of insecticides used in a series of experiments in terms of percentage of mortality for Brown Marmorated Stink Bug nymphs and adults.
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    Pest Management Needs and Limitations for Corn Earworm (Lepidoptera: Noctuidae), an Emergent Key Pest of Hemp in the United States
    Britt, Kadie E.; Kuhar, Thomas P.; Cranshaw, Whitney; McCullough, Christopher T.; Taylor, Sally V.; Arends, Benjamin R.; Burrack, Hannah; Pulkoski, Melissa; Owens, David; Tolosa, Tigist A.; Zebelo, Simon; Kesheimer, Katelyn A.; Ajayi, Olufemi S.; Samuel-Foo, Michelle; Davis, Jeffrey A.; Arey, Nathan; Doughty, Hélène; Jones, Joanne; Bolt, Marguerite; Fritz, Bradley J.; Grant, Jerome F.; Cosner, Julian; Schreiner, Melissa (Oxford University Press, 2021-09-11)
    Corn earworm, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae), has emerged as an injurious insect pest to hemp, Cannabis sativa L., a crop newly reintroduced to the United States. Growing hemp presents a potential alternative economic opportunity for farmers but can be challenging with a market that is unstable and just developing. One of the most notable production challenges is managing corn earworm, an insect pest that is particularly damaging when it feeds on flower buds produced in cannabinoid varieties, creating extensive bud tunneling and wounds that allow entry of pathogens that can aid development and presence of bud rot. Damage to seeds is of lesser concern in hemp cultivars grown for grain and minimal risk is associated with hemp grown for fiber. Our ability to research hemp has only recently been allowed as production was largely suspended following World War II and, as such, there has been limited opportunity to develop information for empirically-based pest management recommendations. Further complicating development of integrated pest management (IPM) strategies are regulatory challenges associated with providing registration support to add hemp to pesticide labels, as it was not formally recognized as a crop by U.S. regulatory agencies until late 2019. Research needs and challenges to develop effective IPM programs for corn earworm on hemp are discussed here.
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    Potato Aphid on Tomatoes: Homoptera: Aphididae, Macrosiphum euphorbiae
    Kuhar, Thomas P.; Reiter, Sara; Doughty, Hélène (Virginia Cooperative Extension, 2009)
    Describes the Potato Aphid (Macrosiphum euphorbiae), its life cycle, damage to crops, and methods for control.
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    Squash Bug
    Doughty, Hélène; Wilson, James M.; Kuhar, Thomas P. (Virginia Cooperative Extension, 2014)
    This publication discusses squash bugs, damaged caused by them, and their control.