The application of microorganisms (Trichoderma viride, bacillus polymyxa) in protection of potato against Rhizoctonia solani (Kuhn)

摘要

The aim of study was determined the possibility of application biological method in protection of potato against Rhizoctonia solani. In greenhouse experiment, which was carried out on potato tubers variety Balbina - early medium, the antagonistic organisms: Trichoderma viride and Bacillus polymyxa were applied. First substratum, which was overgrew of spawn of fungus Trichoderma viride and water suspension of bacteria Bacillus polymyxa were introduced into the sterilized soil and after four days thissoil was infected of fungus Rhizoctonia solani. The potato tubers were grown, four days after soil was infected of pathogen. The valuation passed at once after experiment finished, in September. Medium degree and percent attacked of tubers were determined. The study showed that Trichoderma viride as well as Bacillus polymyxa limited the growth of Rhizoctonia solani, but Trichoderma viride presented higher ability of antagonism to Rhizoctonia solani.