Effects of Herbicides Applied to Soil on Fusarium Root Rot of Processing Peas. H. W. Johnston, Plant Pathologist, Agriculture Canada, Research Station, Charlottetown, Prince Edward Island, Canada C1A 7M8. J. A. Ivany, Weed Scientist, and J. A. Cutcliffe, Horticulturist, Agriculture Canada, Research Station, Charlottetown, Prince Edward Island, Canada C1A 7M8. Plant Dis. 64:942-943. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1980. DOI: 10.1094/PD-64-942.

The herbicides trifluralin, ethalfluralin, dinitramine, and dinoseb were examined for their influence on pea root rot incited by a Fusarium complex. Although root rot severity was reduced in greenhouse trials, yield was not increased in greenhouse or field trials, and reductions in root rot were not evident in field trials. Under commercial conditions, these herbicides are unlikely to reduce pea root rot and improve yields where similar Fusarium spp. are present.