Acetate selected bacillus thuringiensis and the method of use.

摘要

The invention provides a culture of a sporogenic, crystalliferous mutant of Bacillus thuringiensis having the identifying characteristics of a strain selected from NRRL B-18195, NRRL B-18196 and NRRL B-18197, wherein the strain is characterised as having the ability to preoduce bypyramidal crystals composed of toxic protein and requiring a leucine and valine containing nutrient medium for growth, sporulation and crystal production. The cultures are useful as biocontural agents agents for controlling Leipdopteran insects.