Antagonism of Rhizoctonia spp. to Pythium oligandrum and damping-off fungi
1987
Walther, D. (Swiss Federal Agricultural Research Station of Changins, Nyon (Switzerland)) | Gindrat, D.
In paired cultures on corn-meal agar, Rhizoctonia solani, R. cerealis and R. fragariae caused vacuolation, disappearance of cytoplasm, and apparent lysis of hyphae of Pythium oligandrum, P. ultimum, and Aphanomyces cochlioides. Hyphae of Phoma betae were not injured by the isolate of R. solani nonpathogenic to sugar-beet were planted in soil naturally infested with P. ultimum, the level of biological control of damping-off was similar to that obtained with captan dressing. In soil artificially infested with P. ultimum, biological dressings were slightly less efficacious than the chemical dressing
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