YIELD AND QUALITY OF SOYBEAN SEEDS DEPENDING ON THE TIMING OF SOWING AND THE USE OF BIOLOGICAL PRODUCTS

Abstract

Yield and quality of soybean seeds depended on the timing of sowing, and on the pre-sowing treatment. Soy seed treatment with biological product Ryzogumin had positive effect for nitrogen fixation and, due to this, increased crop yield quality. In areas where the plants were treated at sowing with biological product of all three sowing dates, structural performance and weight of 1000 grains were higher. Since that the mass of 1000 seeds differed by an average of 6,4–8,6 g. Different sowing terms significantly influenced the vegetation period. The most extended was for early sowing terms and subsequently was reduced by 6–9 days.