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Season 5 | Episode 7

Tsuga Science

July 1, 2024

It’s an all-too-familiar scenario to foresters: A pest is introduced into another part of the range and slowly works its way to a forest near you. So it goes with the hemlock woolly adelgid (HWA), which was introduced into eastern North America over 70 years ago. HWA has not yet arrived in Wisconsin, but we learn from the research and field experience of our colleagues in the East. Are there silvicultural approaches that can make hemlock trees and stands more resilient, along with other integrated pest management approaches? On this episode of SilviCast we discuss these approaches with Bud Mayfield, research entomologist with the U.S. Forest Service Southern Research Station and Robert Jetton, associate professor at North Carolina State University.

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GUESTS ON THIS EPISODE

Robert M. Jetton, Ph.D.

Associate Professor of Forest Health, Department of Forestry & Environmental Resources, Forest Health Specialist, Camcore, North Carolina State University

Robert Jetton is an associate professor of forest health in the Department of Forestry and Environmental Resources at North Carolina State University in Raleigh, where he co-directs the NC State Forest Health Lab. A native of South Carolina, Robert is a graduate of Furman University (B.S.) and NC State University (M.S. and Ph.D.) and has been a member of the NC State faculty since 2009. His research uses applications of silviculture, forest ecology, and genetics to address management of invasive forest pests and conservation of threatened tree species.  

Albert “Bud” Mayfield, Ph.D.

Research Entomologist, U.S. Forest Service, Southern Research Station

Albert “Bud” Mayfield is a research entomologist with the U.S. Forest Service Southern Research Station and a member of the Insects, Diseases and Invasive Plants work unit. He is a graduate of Yale University, West Virginia University, and the State University of New York, and spent seven years as the forest entomologist for the Florida Division of Forestry before starting with the Forest Service in 2010. Bud is based in Asheville, N.C., and his research focuses on the biology and integrated management of non-native invasive insects, including applications of silviculture and biological control.


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Episode Show Notes

Mayfield III et. al. 2023. Silvicultural canopy gaps improve health and growth of eastern hemlocks infested with Adelges tsugae in the southern Appalachian Mountains. Forest Ecology and Management. 546(4): 121374-. https://doi.org/10.1016/j.foreco.2023.121374.

Mayfield III et. al. 2020. Integrating chemical and biological control of the hemlock woolly adelgid: a resource manager’s guide. FHAAST-2018-04. USDA Forest Service, Forest Health Assessment and Applied Sciences Team, Morgantown, West Virginia.

Mayfield III et. al. 2023. Biological control of hemlock woolly adelgid in North America: History, status, and outlook. Biological Control. 185(9): 105308-. https://doi.org/10.1016/j.biocontrol.2023.105308.

 

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