PHYSICOCHEMICAL DEGRADATION OF BASHKORTOSTAN STEPPE CHERNOZEMS AND THE PRODUCTIVITY OF AGROCENOSES
Acidification and degradation of physicochemical conditions of forest-steppe chernozems in agricultural landscapes occur as a result of intensive agricultural use and deterioration of general ecological situation in the republic. Acidification of soil reached pH of 5.2-5.4, and arable forest-steppe chernozems passed from the category of genetically weakly acid to the category of medium acid soils. Therefore, the need to develop efficient methods to optimize the physicochemical properties of forest-steppe chernozems due to the appropriate doses of lime has become particularly relevant. Experimental studies have shown that the application of lime to podzolized chernozems at rates corresponding to 0.75-1.0 TA on the background of organic and mineral fertilizers shifts the reaction by 0.8-1.0 pH units and optimizes the physicochemical state of degraded arable soils. The optimization of the physicochemical state of forest-steppe chernozems by liming positively affects the productivity of agroecosystems.