THE EVALUATION OF ECONOMIC EFFICIENCY OF SIDERATES APPLICATION FOR SPRING RAPE CULTIVATION
In agricultural production, the process of introducing innovations should be aimed at the biologization and greening of production processes, preservation of soil fertility and should ensure effective economic growth. Currently, there are two directions of reducing the cost of production: increasing crop yields and economical, more productive spending of funds in the production process. In the structure of the cost of rapeseed, a large proportion of the cost of production falls on the use of fertilizers. The calculations and assessment of the economic efficiency of spring rape cultivar "SvSvinto" carried out in our study, depending on the type of green crops and doses of mineral fertilizers compared to manured clean fallow, other things being equal, allowed us to identify trends in maximizing yield and profitability at the lowest cost and identify the best options for their use. The calculations showed that an increase in crop yields and doses of mineral fertilizers had a significant impact on rape yields and, in turn, an increase in the cost of gross output. Its highest values were noted in the options: Wheat +N<sub>120</sub>P<sub>120</sub>K<sub>120</sub>; Oats +N<sub>120</sub>P<sub>120</sub>K<sub>120</sub>; Barley +N<sub>120</sub>P<sub>120</sub>K<sub>120</sub>;Lupine +N<sub>60</sub>P<sub>60</sub>K<sub>60 </sub>and Lupine +N<sub>120</sub>P<sub>120</sub>K<sub>120</sub>, as these indicators are directly dependent. Despite the fact that the production costs in these options for the experiment were greater, the cost in these options was also at a high level due to the high prices of rapeseed.The highest cost values were noted in the options: Wheat + N<sub>120</sub>P<sub>120</sub>K<sub>120</sub> - 16896.2 rubles; Oats + N<sub>120</sub>P<sub>120</sub>K<sub>120</sub> - 16562.4 rubles; Barley + N<sub>120</sub>P<sub>120</sub>K<sub>120</sub> -15856.2 rubles. The highest values of net income were calculated in the options: Lupine + N<sub>60</sub>P<sub>60</sub>K<sub>60 </sub>and Lupine + N<sub>120</sub>P<sub>120</sub>K<sub>120</sub>. In the lupine + N<sub>60</sub>P<sub>60</sub>K<sub>60</sub>variant, the highest profitability indicator was noted - 59.29%, also the highest indicators were found: in the Oat +N<sub>60</sub>P<sub>60</sub>K<sub>60 </sub>- 50.82%, Barley +N<sub>60</sub>P<sub>60</sub>K<sub>60 </sub>- 50.23% and Lupine +N<sub>120</sub>P<sub>120</sub>K<sub>120 </sub>- 48.38%.