Control of Strawberry Red Stele Caused by Phytophthora fragariae. John L. McIntyre, Department of Plant Pathology and Botany, Connecticut Agricultural Experiment Station, New Haven 06504. G. S. Walton, Department of Plant Pathology and Botany, Connecticut Agricultural Experiment Station, New Haven 06504. Plant Dis. 65:835-836. Accepted for publication 18 February 1981. Copyright 1981 American Phytopathological Society. DOI: 10.1094/PD-65-835.

In a 2-yr field trial, spring and fall applications of metalaxyl significantly controlled strawberry red stele caused by Phytophthora fragariae. The second year after transplanting, plants treated with metalaxyl produced an average of 161% more total fruit by weight and had 137% more flowers remaining at fruit harvest than untreated plants. Applications of Ortho RE 20615 or propamocarb hydrochloride did not significantly alter disease incidence, total fruit weight, or flower production as compared with untreated plants.