About the balance of nutrients in modern agriculture

The results of studies on the balance of nutrients in agriculture are presented, which focus on the fact that, along with traditional organic fertilizers, other possible sources of organic matter, such as grain straw, were used. According to the regulations, the average nutrient removal of grain crops by straw in Russia is: nitrogen – 6.7, phosphorus – 2.1 and potassium – 12.8 kg/ton. Knowing the grain yield, it is possible to determine the amount of these nutrients, which will be returned to the soil with this source. Using these data, it is possible to determine its role in changing the nutrient balance in the soils of Russia in comparison with previously accepted methods of its determination. Calculations performed to determine the balance of nitrogen, phosphorus and potassium in agriculture in Russia, the Non-Chernozem zone as a whole and in its various regions where crops are cultivated have shown that in the Russian Federation, with a 50% use of straw for fertilizer, it will be compensated for nitrogen by 44, phosphorus by 51, and potassium – by 35%, which is 7, 14, 18%, respectively, more than the option without adding straw. For the Non-Chernozem zone, these figures were 9, 12, and 21%, respectively.