Premium
Antagonism of Rhizoctonia spp. to Pythium oligandrum and Damping‐Off Fungi
Author(s) -
Walther D.,
Gindrat D.
Publication year - 1987
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1987.tb04395.x
Subject(s) - pythium ultimum , rhizoctonia solani , damping off , biology , rhizoctonia , hypha , antagonism , mycelium , pythium , botany , sugar beet , corn meal , phycomycetes , horticulture , biological pest control , biochemistry , receptor , inoculation , food science
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 Rhizoctonia spp. When sugar‐beet seeds dressed with mycelium of R. cerealis, R. fragariae , or an isolate of R. solani nonpathogenic to sugar‐beet were planted in soil naturally infested with P. ul‐timum , 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.