Residual Naval Stores Stumps as Reservoirs of Inoculum for Infection of Slash Pines by Phaeolus schweinitzii. G. M. Blakeslee, Assistant Professor of Forest Pathology, School of Forest Resources and Conservation and Department of Plant Pathology. S. W. Oak, Biologist, School of Forest Resources and Conservation, University of Florida, Gainesville 32611. Plant Dis. 64:167. Accepted for publication 3 October 1979. Copyright 1980 American Phytopathological Society. DOI: 10.1094/PD-64-167.

Signs and symptoms of Phaeolus schweinitzii infection, including root and butt rot, wind-thrown living trees, and dead standing trees, were observed in plantations of 10- to 22-yr-old slash pines in north-central Florida. The likely source of the pathogen is believed to be resin-impregnated ("lightered") stumps remaining from naval stores operations.