Presenters: Dan Gilrein and Margery Daughtrey
Tree Pests - Dan Gilrein will cover the latest on important invasive pest threats -emerald ash borer, which is now killing trees around Long Island, and spotted lanternfly, which is expected to arrive in the near future to help in early recognition and management. This presentation will also review some of the other troublesome tree pests including fall webworm that was in outbreak status the last two years, and eastern tent caterpillar which also appears at high levels periodically. Arborvitae leafminer, oak shothole miner, bagworm and several others of recent importance will be mentioned, including some management suggestions.
Dan Gilrein is Extension Entomologist with Cornell Cooperative Extension of Suffolk County and has been with Cornell since 1987. He provides information on pests and pest management for arborists and other landscape professionals, as well as agriculture producers. He holds a Master’s degree from Cornell and his BS in Forest Biology from SUNY ESF.
Tree Diseases - Trees in the urban landscape are beset with all sorts of contagious disease threats, in addition to having many “people pressure diseases". Margery will cover anthracnoses and other leaf diseases including rusts, cankers, galls, root rots and vascular wilts that are commonly seen on Long Island, and also describe the new beech leaf disease (caused by a nematode!). You’ll learn how to recognize these plant problems and how to minimize their effects culturally.
Margery Daughtrey is a Senior Extension Associate with the Section of Plant Pathology and Plant-Microbe Biology of Cornell University. She has conducted a research and extension program on the management of diseases of ornamental plants since 1978, at Cornell’s Long Island Horticultural Research and Extension Center in Riverhead, NY. Daughtrey holds a B.S. degree in Biology from the College of William and Mary and an M.S. in Plant Pathology from the University of Massachusetts. Daughtrey is coauthor of several books, including Diseases of Herbaceous Perennials, the Compendium of Flowering Potted Plant Diseases and the Compendium of Bedding Plant Diseases and Insects. She was named a Fellow of APS in 2012.
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Funding for these projects is provided by the State's Environmental Protection Fund (EPF) and is administered by the Urban and Community Forestry Program in DEC’s Division of Lands and Forests.
Last updated May 26, 2020