Annosus Root Rot in Slash Pine Plantations in the Sandhill Section of South Carolina. Wesley Witcher, Professor of Plant Pathology and Physiology, Clemson University, Clemson, SC 29631. Carl L. Lane, Professor of Forestry, Clemson University, Clemson, SC 29631. Plant Dis. 64:398-399. Copyright 1980 American Phytopathological Society. DOI: 10.1094/PD-64-398.

Cutting slash pine and inoculating the stumps with Heterobasidion annosum (Fomes annosus) caused mortality of adjacent trees, regardless of the month of inoculation. Mortality was greatest after inoculations during October and least after July inoculations. H. annosum was isolated from 52 trees adjacent to inoculated stumps and from 10 trees adjacent to uninoculated controls. Stumps in half of the plots were treated with borax and those in the other plots received no borax. Only five trees adjacent to the treated stumps died, but 58 adjacent to untreated stumps died; mortality was greatest when trees were felled in January and June.