Suppresion of Inflection of Cotton Seedlings by Rhizoetonia Solani in the Presence of Thielaviopsis Basicola, the Causal Agent of Black Root Rot

摘要

High population levels of Rhizoctonia solani in a field in Coolidge, AZ which also contained Thielaviopsis basicola failed to cause the expected infection by R. solani in untreated seeds of Gossypium hirsutum. Growth chamber experiments with autoclaved soil amended with inoculum of both R. solani, and T. basicola had a significantly lower infection rate by R. solani than did the control soil with R. solani alone.