BIOLOGICAL CONTROL OF DAMPING OFF AND ROOT ROT AND INOCULUM PREPARATION THEREFOR

摘要

The invention includes substantially pure cultures of ATCC 53522 and mutants thereof effective in protecting plants from damping off the root rot as determinable by a defined plant protection assay. The invention further includes a protecting toxin produced by the bacteria just referred to. A seed inoculum includes an effective quantity of the bacteria or the toxin in a carrier. A method for protecting plants from damping off and root rot includes placing an effective quantity of the bacteria or toxin in the immediate vicinity of a plant to be protected.