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North American grapevine yellows (NAGY) is a lethal, insect-transmitted disease of grapevines caused by phytoplasmas (cell wall-less bacteria). North American grapevine yellows occurs throughout the Mid-Atlantic region of the U.S., but it is particularly prevalent in the Blue Ridge and Piedmont regions of Virginia, where it causes significant vine loss in susceptible Vitis vinifera varieties. This publication reviews what is known about NAGY, provides management options based on our current knowledge, and describes ongoing research needed to better understand this complex disease.
Virginia Cooperative Extension materials are available for public use, reprint, or citation without further permission, provided the use includes credit to the author and to Virginia Cooperative Extension, Virginia Tech, and Virginia State University.
Issued in furtherance of Cooperative Extension work, Virginia Polytechnic Institute and State University, Virginia State University, and the U.S. Department of Agriculture cooperating. Edwin J. Jones, Director, Virginia Cooperative Extension, Virginia Tech, Blacksburg; M. Ray McKinnie, Administrator, 1890 Extension Program, Virginia State University, Petersburg.
September 18, 2013