INFLUENCE OF SIDERAL VAPORS ON THE NUTRITIONAL REGIME OF BLACK PODZOLIC AND YIELD OF WHEAT WINTER

Abstract

It was revealed that for the accumulation of nitrogen reserves of mineral compounds in the soil when grown without fertilizers, the best sideratom was spring and sweet clover, and buckwheat for increasing the content of mobile compounds of phosphorus and potassium. The same pattern was traced when applying mineral fertilizers. At the same time, most of the nutrients in the soil before sowing winter wheat accumulate when all the fertilizers are applied (N₈₀P₄₀K₄₀) directly under the green manure, or only part of it - N₄₀P₄₀K₄₀ and N₄₀P₄₀. It was established that when applying for N₈₀P₄₀K₄₀ and P₂₀K₂₀ siderats for winter wheat, a grain yield of wheat at the level of 7,1-7,5 t/ha was formed depending on the crop that was used for green fertilizer. The introduction of the dose of N₈₀P₆₀K₆₀ directly under the winter wheat, both after siderate and against the background of pure steam, led to a decrease in yield by 33-47 and 11-15 %, respectively.