Assessment of the economic effectiveness of use of new organmicroelement complexes in the grain-herbs crope rotation

Relevance. The article presents the results of an economic assessment, including net income, payback and profitability of production, when using multi-purpose compost and its modifications — organomicroelement complexes: 1. Multi-purpose compost + [Zn + Mo]; 2. Multi-purpose compost + + [Zn + Cu]) in the grain-grass crop rotation. Methods. Field studies were carried out in the link of the grain-grass crop rotation at the Gubino agropolygon (Tver region, VNIIMS) on sod-weakly podzolic deep and strongly gluey light loamy drained soil on a carbonate moraine. The economic efficiency of fertilizer use was assessed using standard methods. Results. An increase in profitability of 6.6–22.9% and ensuring the profitability of crop production at the level of 237.8–264.8% due to organic fertilizers are shown. It was revealed that the use of mineral fertilizers leads to a decrease in profitability by 9% due to costs due to the high cost of the fertilizers themselves and the cost of their application. It was determined that the organomicroelement complex — Multi-purpose compost + [Zn + Mo] provides the maximum average annual profitability of production of 264.8% and the maximum increase in profitability by 23% relative to the control (option without fertilizers). It has been proven that in the first year of crop rotation, the application of organic and mineral fertilizers, as well as their cost, increase production costs by 2.5–3.0 times relative to subsequent years. A statistically significant correlation was found between the yield of crops in the crop rotation and costs: r = 0.61 in the first year, r = 0.97–0.99 in the years after the effects of fertilizers.