Occurrence and Spread of Grape Corky Bark and Stem Pitting in Mexico. D. Téliz, Instituto Nacional de Investigaciones Agricolas (INIA), Centro de Investigaciones Agricolas del Norte (CIAN), Torreón, Coah., Mexico. A. C. Goheen, USDA, Science and Education Administration/Agricultural Research, University of California, Davis 95616; and P. Valle, Inia, Cian, Torreón, Coah., Mexico. Plant Dis. 64:584-586. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1980. DOI: 10.1094/PD-64-584.

Hybrid LN-33 and 49 grape (Vitis vinifera L.) cultivars that were free of virus diseases were obtained from the University of California, Davis, and planted in Aguascalientes, Mexico, in 1968. Typical symptoms of corky bark and distinct stem pitting were observed in all LN-33 vines examined in September 1978 and also in commercial vineyards, mainly in the cultivars Cardinal, Malaga Champagne, Exotic, Tokay, San Emilion, and Chardonnay. In the spring of 1979, healthy LN-33 vines at Davis were inoculated with buds from affected vines from Mexico and developed distinct symptoms within 4 mo.