Browsing by Author "Bergh, J. Christopher"
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- 2016 Spray Bulletin for Commercial Tree Fruit GrowersPfeiffer, Douglas G.; Bergh, J. Christopher; Frank, Daniel L.; Hooks, C. R. R.; Walsh, C. S.; Yoder, Keith S.; Rahan, Mahfaz; Kotcon, J. B.; Derr, Jeffrey F.; Chandran, Rakesh S.; Weaver, Michael W.; Brown, Amy; Parkhurst, James A. (2016-01-01)This is a multi-state guide, with orchard recommendations for Virginia, West Virginia and Maryland.
- 2017 Spray Bulletin for Commercial Tree Fruit Growers. Va. Coop. Ext. Serv. Publ. 456-419Pfeiffer, Douglas G.; Bergh, J. Christopher; Wilson, James M.; Frank, Daniel L.; Hooks, C. R. R.; Sherif, Sherif M.; Walsh, C. S.; Yoder, Keith S.; Rahman, M.; Kotcon, J. B.; Derr, Jeffrey F.; Chandran, Rakesh S.; Weaver, Michael J.; Brown, Amy; Parkhurst, James A. (2016)Integrated pest management (IPM) is the approach emphasized in this guide; some aspects of IPM are incorporated throughout, although this guide mainly deals with the chemical component of IPM. IPM combines biological control from predators with selective chemical application for maintaining pest populations below economic threshold levels. This approach requires that growers give careful consideration to the selection, application rate and timing of chemical sprays. The degree of integration achieved will vary according to the management ability, training and objectives of the orchardist. Inadequate monitoring or implementation of IPM practices will lead to unsatisfactory results. In order to encourage the biological control components of the program, growers must consider the toxicity of chemicals to predators (Table 9, page 59) in addition to their efficacy against fruit pests (Tables 7 and 8, pages 56-58).
- 2020 Spray Bulletin for Commercial Tree Fruit Growers: Virginia, West Virginia, and University of MarylandPfeiffer, Douglas G.; Bergh, J. Christopher; Wilson, James; Hooks, C. R. R.; Sherif, Sherif M.; Walsh, C. S.; Yoder, Keith S.; Rahman, Mahfaz; Kotcon, J. B.; Derr, Jeffrey F.; Chandran, Rakesh S.; Frank, Daniel L.; Wycoff, Stephanie B.; Brown, Amy; Parkhurst, James A. (2020)Integrated pest management (IPM) is the approach emphasized in this guide; some aspects of IPM are incorporated throughout, although this guide mainly deals with the chemical component of IPM. IPM combines biological control from predators with selective chemical application for maintaining pest populations below economic threshold levels. This approach requires that growers give careful consideration to the selection, application rate and timing of chemical sprays. The degree of integration achieved will vary according to the management ability, training and objectives of the orchardist. Inadequate monitoring or implementation of IPM practices will lead to unsatisfactory results. In order to encourage the biological control components of the program, growers must consider the toxicity of chemicals to predators (Table 9, page 59) in addition to their efficacy against fruit pests (Tables 7 and 8, pages 56-58)...
- 2021 Home Grounds and Animals PMG - Author Contact ListAskew, Shawn D.; Wycoff, Stephanie B.; Bergh, J. Christopher; Bush, Elizabeth A.; Day, Eric R.; Del-Pozo, Alejandro; Derr, Jeffrey F.; Frank, Daniel L.; Hansen, Mary Ann; Hong, Chuan X.; Laub, Curtis A.; McCall, David S.; Miller, Dini M.; Nita, Mizuho; Parkhurst, James A.; Paulson, Sally L.; Pfeiffer, Douglas G.; Rideout, Steven L.; Wilson, James; Yoder, Keith S. (Virginia Cooperative Extension, 2021-02-12)This is a chapter of the 2021 Home Grounds and Animals PMG. This 2021 Virginia Pest Management Guide provides the latest recommendations for controlling diseases, insects, and weeds for home grounds and animals. This publication contains information about prevention and nonchemical control as alternatives to chemical control or as part of an integrated pest management approach. The chemical controls in this guide are based on the latest pesticide label information at the time of writing. Because pesticide labels change, read the label directions carefully before buying and using any pesticide. Regardless of the information provided here, always follow the latest product label instructions when using any pesticide. Commercial products are named in this publication for informational purposes only. Virginia Cooperative Extension does not endorse these products and does not intend discrimination against other products that also may be suitable.
- 2021 Home Grounds and Animals PMG - Home FruitPfeiffer, Douglas G.; Bergh, J. Christopher; Nita, Mizuho; Yoder, Keith S. (Virginia Cooperative Extension, 2021-02-12)This is a chapter of the 2021 Home Grounds and Animals PMG. This 2021 Virginia Pest Management Guide provides the latest recommendations for controlling diseases, insects, and weeds for home grounds and animals. This publication contains information about prevention and nonchemical control as alternatives to chemical control or as part of an integrated pest management approach. The chemical controls in this guide are based on the latest pesticide label information at the time of writing. Because pesticide labels change, read the label directions carefully before buying and using any pesticide. Regardless of the information provided here, always follow the latest product label instructions when using any pesticide. Commercial products are named in this publication for informational purposes only. Virginia Cooperative Extension does not endorse these products and does not intend discrimination against other products that also may be suitable.
- 2021 Horticultural and Forest PMG - AuthorsAskew, Shawn D.; Baudoin, Antonius B.; Bergh, J. Christopher; Chamberlin, Lori; Dary, Eric R.; Del-Pozo, Alejandro; Derr, Jeffrey F.; Frank, Daniel; Hansen, Mary Ann; Hong, Chuan X.; Johnson, Charles S.; Laub, Curtis A.; McCall, David S.; Nita, Mizuho; Parson, Rachel; Peer, Kyle; Pfeiffer, Douglas G.; Richardson, Robert J.; Salom, Scott M.; Schultz, Peter B.; Wilson, James (Virginia Cooperative Extension, 2021-02-12)Horticultural and Forest Crops 2021 Author Contact List
- 2021 Horticultural and Forest PMG - Commercial Small Fruit: Diseases and InsectsPfeiffer, Douglas G.; Johnson, Charles S.; Bergh, J. Christopher; Derr, Jeffrey F. (Virginia Cooperative Extension, 2021-02-12)This is a chapter from the 2021 Horticulture and Forest Pest Management Guide. The Virginia Pest Management Guide (PMG) series lists options for management of major pests: diseases, insects, nematodes, and weeds. These guides are produced by Virginia Cooperative Extension and each guide is revised annually. PMG recommendations are based on research conducted by the Research and Extension Division of Virginia Tech, in cooperation with other land-grant universities, the USDA, and the pest management industry.
- 2021 Horticultural and Forest PMG - GrapesPfeiffer, Douglas G.; Baudoin, Antonius B.; Bergh, J. Christopher; Nita, Mizuho (Virginia Cooperative Extension, 2021-02-12)This is a chapter from the 2021 Horticulture and Forest Pest Management Guide. The Virginia Pest Management Guide (PMG) series lists options for management of major pests: diseases, insects, nematodes, and weeds. These guides are produced by Virginia Cooperative Extension and each guide is revised annually. PMG recommendations are based on research conducted by the Research and Extension Division of Virginia Tech, in cooperation with other land-grant universities, the USDA, and the pest management industry.
- 2022 Spray Bulletin for Commercial Tree Fruit Growers: Virginia, West Virginia, and University of Maryland ExtensionPfeiffer, Douglas G.; Bergh, J. Christopher; Wilson, James M.; Quesada, C.; Hooks, C. R. R.; Sherif, Sherif; Aćimović, Srđan G.; Rahman, Mahfuz; Kotcon, J. B.; Derr, J. F.; Chandran, R. S.; Frank, Daniel L.; Parkhurst, J. (Virginia Cooperative Extension, 2022-03-07)
- Alerta de Plagas: Mosca Linterna con Manchas Lycorma deliculataDay, Eric R.; Pfeiffer, Douglas G.; Dellinger, Theresa A.; Bergh, J. Christopher; Sastre, Beth (Virginia Cooperative Extension, 2018-05-30)Discusses the Spotted Lanternfly, an insect pest recently discovered in Virginia. Also describes its life cycle, hosts, and crop damage.
- Alson H. Smith AREC(Virginia Tech Pesticide Programs, 2004-04-20)Alson H. Smith AREC during bloom.