Abstract: The present application is directed to a new Bacillus subtilis strain deposited under the access number ATCC® PTA-8805, to bioproduct formulations comprising viable cells of the new strain, which can be encapsulated or in a concentrated liquid form, and to the use of these bioproducts to biologically control and decrease the incidence of Rhizoctonia solani, a plant pathogen that attacks economically important crops. The bioproducts are applied in encapsulated form directly over tubers or spraying a concentrated liquid form diluted in water over a plantation, and both formulations are applied in covered furrows.