Estimation of the impact of alternative fertilizers on the biological activity of soil and the productivity of timothy grass

This paper presents data on the use of unconventional organic fertilizer on timothy grass crops. The aim of the study was to identify the reaction of soil microflora to the introduction of distillery stillage filtrate and the development of ecological and biological bases for the use of unconventional organic fertilizers for use on perennial grasses. After the introduction of alternative fertilizer, in the first year the soil acidity in the options changed slightly from 6.53 in the control to 6.31 in the option with a dose of 312 kg N. The following year, after fertilization, there was a more significant change in pH. The use of unconventional organic fertilizer - distillery stillage filtrate, had a positive effect on the pulp-destroying activity of microorganisms. Therefore, in the study, which examined the effect of filtrate without neutralization, on the growth and yield of timothy grass, in the control option, the percentage of decomposition of the flax linen on average for two years of research was 24.4%. On the studied plots with the introduction of the fertilizer at a dose of 78 kg N it was 26.6%. On the plot with a dose of filtrate 156 kg N it was 29.0%, on the plot with a dose of 234 kg N it was 30.3% and on the plot with a dose of 312 kg N it was 30.9%. It is noted that the introduction of distillery stillage filtrate in a dose of 78 kg N did not have a significant impact on the yield of timothy grass. The introduction of bard in higher doses provided an increase in yield by 78-144%. The optimum dose of making distillery stillage filtrate in terms of nitrogen is N 234 kg. The increase of the dose of the inserted distillery stillage filtrate leads to an increased nitrate nitrogen. The introduction of N 312 kg in the form of unconventional organic fertilizer is an unacceptable dose, as this leads to an excess of MPC in nitrate nitrogen content.