The objective of the paper was to determine the effectiveness of post-culture liquids of Bacillus sp. Bsch 19 and Pseudomonas sp. Psch 16 in the protection of soybean from soil-borne fungi. The use of post-culture liquids of those bacteria in seed dressing positively affected the number, healthiness and yielding of soybean plants. The plants were mainly infected by Fusarium spp., Phoma exigua var. exigita, Rhizoctonia solani and Sclerotinia sclerotiorum. Those fungi were isolated much more rarely from the plants in combinations with the use of post-culture liquids of antagonistic bacteria as compared with the plants from the control combination, i.e. without seed dressing. A reverse relation was found for the occurrence of saprophytic fungi from the genera of Gliocladium, Penicillium and Trichoderma.