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Professor and Extension Specialist, Department of Entomology
Ph.D., Entomology, University of Wisconsin, Madison
M.S., Entomology, University of Wisconsin, Madison
B.S., Plant Pathology, University of Wisconsin, Madison
Dr. James “Jim” Walgenbach conducts applied research and extension program on fruit and vegetable crops important in western North Carolina. His program focuses on the development and implementation of insect pest management programs for fruiting vegetables and tree fruits.
Since joining N.C. State University in 1986, Dr. Walgenbach has conducted research on a variety of pest management issues facing the commercial peach industry. A recent threat he is following is the population increase of the Asian stink bug.
Dr. Walgenbach conducts much of his research at the Mountain Horticultural Crops Research Station in Mills River, and annually conducts numerous on-farm trials in the mountain and Piedmont regions of North Carolina. He also works closely with county Extension personnel, growers and the crop protection industry to implement modern, sustainable pest management programs.
Mr. Wayne Mitchem is an Extension associate and researcher. Based at the Mountain Horticultural Crops Research and Extension Center in Mills River, Mitchem researches herbicide screening for fruit crops and weed/crop interactions as they relate to critical weed-free periods for fruit. In short, he’s developing ways to better manage weeds and reduce their impact on crops.
As an Extension associate, Mitchem’s responsibilities include weed management in tree fruit and vine crops in North Carolina, South Carolina and Georgia. Periodically, Mitchem also updates recommendations in state and regional publications.
Mitchem emphasizes Good Agricultural Practices (GAPs) certification. Mitchem spends time addressing grower needs at production meetings, on-farm visits and demonstrations.
Dr. David Ritchie is a professor and Extension specialist with the department of plant pathology. His program focuses on discovery and problem-solving research dealing with bacterial and fungal plant pathogens that cause diseases of fruit and vegetable crops. The goal of his research is to develop knowledge that leads to more durable disease resistance and disease management strategies.
Problem-solving and integrated disease management research is conducted on two fungal diseases of peaches, brown rot and peach scab. Ritchie has been involved with the evaluation of registered and potentially soon-to-b-registered fungicides for control of brown rot, peach scab, and bactericides for bacterial spot at the Sandhills Research Station. This research is used to develop product label information such as use rate and efficacy.
Dr. Michael Parker
Professor, Department of Horticultural Science
Ph.D., Horticulture, Michigan State University
M.S., Horticulture Michigan State University
B.S., Agricultural Engineering Technology and Horticulture, Michigan State University
Dr. Mike Parker is a tree fruit specialist researching cultural management strategies, rootstock performance in the southeast, peach thinning, planting systems and orchard floor management. He also evaluates replant strategies to increase orchard productivity and profitability and minimize orchard inputs.
Primarily an Extension specialist, Parker works with producers and those considering planting an orchard to share the best management practices for maximum productivity. He has been involved in various projects that demonstrate a direct relationship between orchard management and tree fruit growth.
Parker has led and participated in numerous field days and pruning demonstrations. Watch the video series on this website for information on proper planting and pruning of peach trees.
In addition to peach, his research program includes apple, pecans and alternative tree fruit crops. Parker primarily conducts applied research utilizing orchards at the Sandhills Research Station in Jackson Springs and the Mountain Horticultural Crops Research and Extension Center in Mills River.