Viruses Isolated from Wild Carrot and Poison Hemlock. W. E. Howell, Research Technologist III, Irrigated Agriculture Research and Extension Center, Prosser, WA 99350. G. I. Mink, Plant Pathologist, Irrigated Agriculture Research and Extension Center, Prosser, WA 99350. Plant Dis. 65:277-279. Copyright 1981 American Phytopathological Society. DOI: 10.1094/PD-65-277.

During a survey of poison hemlock (Conium maculatum L.) and wild carrots (Daucus carota L.) in southeastern Washington in 1975 and 1979, carrot thin leaf virus, celery mosaic virus, and alfalfa mosaic virus were isolated from poison hemlock and from wild carrot. Clover yellow vein virus was isolated from wild carrot and also found in commercial carrots (Daucus carota L. ssp. sativus DC.). This is the first report of alfalfa mosaic virus in poison hemlock and and wild carrot and also of clover yellow vein virus in wild and domestic carrots.