We have studied the biological efficiency of 8% conc. Emulsions Topic BG, and conc. emulsions Maxier in our experiment (standard). And the results showed that in the use of quantitative doses of 0.4 l / ha of 8% conc. emulsion Topik BG effectiveness was 82.7% of another drug- and conc. Maxier’s emulsion in the amount of 0.9-1.0 l / ha, 83.2-86.2% compared to control variants.