Root Disease, Associated with Verticicladiella alacris, of Pines in South Africa. M. J. Wingfield, Plant Pathologist, Plant Protection Research Institute, Stellenbosch, 7600, South Africa. P. S. Knox-Davies, Professor of Plant Pathology, University of Stellenbosch, Stellenbosch, 7600, South Africa. Plant Dis. 64:569-571. Copyright 1980 American Phytopathological Society. DOI: 10.1094/PD-64-569.

A disease of Pinus pinaster and P. radiata associated with root infection by Verticicladiella alacris was common at roadsides, and wounding appeared to be necessary for infection. All infected trees were colonized by the European bark beetle. Orthotomicus erosus, and V. alacris was isolated from Hylastes spp. in diseased roots.