For use as a biological fungicide environmentally desirable, the present invention discloses a biologically pure culture of the isolated microorganism Bacillus licheniformis strain SB3086. The present invention discloses a method for improving the biological fungicidal activity of the microbial agent. Furthermore, nutrient compositions comprising microbial agents and plant fungal diseases utilizing the strain and the present invention discloses a method of controlling infection of Aspergillus niger.
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