Influence of Glomus mosseae on seed-borne fungal diseases of leguminous vegetable crops

摘要

Though the control of seed-borne diseases is achieved mainly by chemical seed treatment, use of biocontrol agents like Trichoderma and other antagonists is gaining importance. Studies were conducted to find out the influence of Glomus mosseae on thegermination rate and survival of plants, in leguminous vegetable seeds infected by different fungal pathogens. Against seed borne inoculum varied degree of protection was obtained in different crops in G. mosseae soil. In frenchbean very good protectionwas obtained against seed-borne diseases caused by Fusarium solani, Rhizoctonia solani and Sclerotium rolfsii. Similarly, pea and pigeon pea seeds infected by R. solani and S. rolfsii showed better crop stand in G. mosseae soil. Protection was obtainedto some extent (10 to 15 percent) in the case of cowpea seeds infected by Fusarium species and S. rolfsii. In dusterbean crop no protection was obtained against seed-borne diseases by mycorrhizal fungi excepting Fusarium. Glomus mosseae soil did not offer any protection to the seeds of any of the test crops infected by Macrophomina phaseolina.