Abstract
Field plots were established in 1989 and 1990 to investigate the efficacy of seed treatments with Pseudomonas cepacia strain AMMD, P. fluorescens strain PRA2S, Corynebacterium sp. strain SA, and captan on the epidemiology of root rot of pea caused by Aphanomyces euteiches and preemergence damping-off caused by Pythium spp. Disease incidence was assessed every 2-3 days, and soil-water matric potential and soil temperature were recorded. Strains AMMD and PRA2S significantly (P<0.05) suppressed initial disease 23-70% and the area under the disease progress curve 15-45% over both years compared to the nontreated control. Strain AMMD also suppressed the final incidence of disease at harvest by 11-19% over both years and PRA2S by 19% in 1989 compared to the nontreated control [...]
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