Fusarium Stem Rot of Douglas-Fir Seedlings. P. Morgan, Forest Nursery Pathologist, Oregon State Department of Forestry, D. L. Phipps State Forest Nursery, Elkton 97436. Plant Dis. 67:441-442. Accepted for publication 1 December 1982. Copyright 1983 American Phytopathological Society. DOI: 10.1094/PD-67-441.

Stem rot of Douglas-fir seedlings caused by Fusarium roseum 'Avenaceum' and F. roseum 'Sambucinum' is reported from Oregon. Infected seedlings were detected during the winter months. They showed chlorosis and wilting associated with stem lesions ranging from 1 to 15 mm from the root collar. An isolate of F. roseum 'Avenaceum' and one of F. roseum 'Sambucinum' were shown to be pathogenic on 1-yr-old Douglas-fir seedlings. Symptoms on infected seedlings were similar for both pathogens.