Weed control compositions containing Drechslera monoceras and ad

Plant protecting and regulating compositions – Plant growth regulating compositions – Micro-organisms or from micro-organisms

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504118, 504129, 504130, 504133, 504136, 504138, 504143, 504149, 504139, 504140, A01N 6304

Patent

active

054985919

ABSTRACT:
Described are Drechslera monoceras var. microsporus strains, that is, new microorganism strains which show herbicidal effects against all varieties of barnyard grass, i.e., Echinochloa spp. as weed even at temperatures as low as 15.degree. C. but does not give any influence to cultivation crops such as rice; weed control compositions against barnyard grass, said compositions each containing one of the microorganism strains as an effective ingredient and having high safety and selectivity; and a barnyard grass control method employing at least one of the microorganism strains. Combined use of at least one of the microorganism strains with a chemical herbicide makes it possible to substantially reduce their dosages compared with those required when they are singly applied.

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