INFLUENCE OF PHOSPHORATE MEAL ON YIELD OF SPRING BARLEY
Barley ( Hordeum vulgare L. ) is one of the main grain forage crops cultivated in the Russian Federation. Increasing the yield of barley, obtaining environmentally friendly and high-quality products is the main task facing world agriculture. One of the ways to solve this problem is the use of local agronomic mineral raw materials, in particular, phosphorites. The article presents data from a field experiment on the introduction of raw ground phosphorite (phosphate rock) from the Syundyukovsky deposit of the Republic of Tatarstan at doses of 4 and 6 t/ha for spring barley varieties Rakhat and Raushan. The results of the study revealed a positive effect of the use of phosphorites on the productivity of spring barley, as well as on the main quality indicator of grain - protein content. An increase in the yield of barley was established by 1.4-2.1 t/ha relative to the control values, by 1.2-1.9 t/ha - relative to the variant with the application of mineral fertilizers. There is an increase in the protein content in the grain by 0.7-0.9 %.