Methods for controlling above-ground plant diseases using antibiotic-producing strains of (bacillus sp.)

摘要

Above-ground fungal and bacterial infections of plants are treated by applying to the plants an antibiotic-producing Bacillus sp. strain ATCC 55608, 55609, 53522 and/or zwittermicin-A antibiotic therefrom. The above-ground infections treated can be caused by Phytophthora infestans, Botrytis cinerea, Pseudomonas syringae, Alternaria solani, Plasmopara viticola, Uncinula necator, Puccinia recondita f.sp. Tritici, Staganospora nodorum, Monilinia fructicola or Erwinia herticola. The Bacillus sp. and/or antibiotic when applied can be in the form of a whole culture broth, an antibiotic-containing supernatant, a powder, granules, a concentrate, an aqueous suspension or a microencapsulated formulation.