Pseudomonas viridiflava Associated with Root and Crown Rot of Alfalfa and Wilt of Birdsfoot Trefoil. F. L. Lukezic, Professor, Department of Plant Pathology, Pennsylvania State University, University Park 16802. K. T. Leath, Research Plant Pathologist, USDA, ARS, and R. G. Levine, Research Assistant, Department of Plant Pathology, Pennsylvania State University, University Park 16802. Plant Dis. 67:808-811. Accepted for publication 3 January 1983. 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, 1983. DOI: 10.1094/PD-67-808.

Strains of Pseudomonas viridiflava were associated with crown and root rot of alfalfa (Medicago sativa) and wilt of birdsfoot trefoil (Lotus corniculatus). Inoculation studies demonstrated that a test strain was capable of inducing necrosis and stunting of the roots of alfalfa, red clover (Trifolium pratense) and birdsfoot trefoil when the roots were wounded before inoculation. These studies also showed that the alfalfa strain induces severe root and crown rot of alfalfa.