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Ecology and Epidemiology

Influence of Root Rot on Winter Survival and Yield of Winter Barley and Winter Wheat. J. A. Frank, Research plant pathologist, ARS, USDA, Department of Plant Pathology, The Pennsylvania State University, University Park 16802; Phytopathology 75:1039-1041. Accepted for publication 6 May 1985. 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, 1985. DOI: 10.1094/Phyto-75-1039.

Winter survival of wheat and barley was reduced by root rot pathogens, particularly Bipolaris sorokiniana. Seedborne and soilborne inoculum along with soil fumigation and seed treatments were used to provide different levels of disease. Differences in winter survival were measured as the differences between fall and spring stand counts. Disease was assessed as the proportion of diseased tissue on washed roots and subcrown internodes of surviving plants in the spring. Overall stand reductions, ranging from 11 to 29% in wheat and from 27 to 62% in barley, were attributed to B. sorokiniana.