Abstract
or 3 years, in three replications, on two backgrounds. The first background is without fertilizers. The second background is with introduction of granular, complex organomineral fertilizer (COMF) during sowing with an application rate of 100 kg / ha. In the subsequent scheme, four options were used on these two backgrounds: 1 control without bio products, 2 Ecoforce, 3 Extrasol-Zh, 4 BisolBifit. The effect of biological products and “COMF “ on winter wheat crops has been studied, and the relationship between soil biological activity and productivity in Ulyanovsk region has been revealed. The highest productivity parameter of Kharkovskaya 92 wheat was obtained by inoculation of seeds with Extrasol-Zh (1 liter per ton of seeds) and BisolBifit on complex fertilizer background during sowing at a dose of 100 kg / ha. Introduction of a complex organomineral fertilizer without application of biological products also contributed to an increase of soil biological activity in comparison with the control background without fertilizers by 5.6%. Our research has revealed a direct relationship between yield and soil biological activity. The regression equation shows that winter wheat yield increases by 0.09 t / ha with an increase of microbiological activity by 1%.
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