Insecticidal composition of bacillus thuringiensis serovar israelensis, DSM 3435 and DSM 3440

摘要

The invention is an insecticidal composition which comprises a crystalline toxin, a carrier, and diluent. Further, the invention encompasses a method of controlling insects of the order Diptera utilizing the insecticidal composition. The active ingredient, or crystalline toxin, is obtained by culturing asporous strains of Bacillus thuringiensis serovar israelensis, DSM 3439 and DSM 3440, under specific culture conditions. The crystalline toxin is separated from lysed sporangium and prespore in the culture.