Michigan’s Major Tree Maladies for 2018

Jan 22 2018 - 1:10pm

Oak Wilt and Pear Trellis Rust continue to increase in prominence, reaching epidemic proportions in some areas of the state. Certain formulations of herbicides harm if not kill trees, a product of unintended consequences, perpetuated by the public and professional alike. This general session will alert attendees to some of the major tree challenges for 2018.

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Michigan State University

David L. Roberts, Ph.D, Senior Academic Specialist
College of Agriculture and Natural Resources, Michigan State University
B.S. and M.S degrees in Plant Pathology from The Ohio State University.
PhD in Botany and Plant Pathology from Michigan State University (1982).
Director of MSU’s Plant & Pest Diagnostic Clinic from 1984-1998 (>14 years).
Current position is Senior Academic Specialist in the Deans office at MSU’s College of Agriculture and Natural Resources serving Michigan’s Nursery and Landscape Industry.
Dr. Roberts has worked on many plant issues for more than 30 years. In the 1980s, his research led to the discovery of the first bacterial wilt disease of turfgrasses in North America. Subsequently, his discovery of a Xanthomonas bacterium that controls the weed grass, annual bluegrass, on golf courses resulted in several patents with MSU. His research interests also include Herbicide Toxicity to Plants, Dutch Elm Disease, Oak Wilt, Trellis Rust and a number of other issues such as Phomopsis canker on spruce, which he discovered in the late 1980s. In 2001, Dr. Roberts began work on ash decline in southeast Michigan. His research led to the discovery of the Emerald Ash Borer. He has published hundreds of articles in peer-reviewed journals, trade magazines and MSU Extension publications. As part of his Michigan State University duties, Dr. Roberts presents many lectures and workshops around Michigan and nationally.