INFLUENCE OF DIFFERENT DOSE OF LIME ON AGROCHEMICAL PARAMETERS OF THE GRAY PODZOLIZED SOIL AND YIELD OF CROPS
The results of studies on the effect of different doses of lime on the elements of the crop structure, the yield of oats and peas, and quality parameters of protein and starch are presented. The long-term stationary experiment at gray podzolized heavy loamy soil in the experimental field of the Tomsk Agrarian College in the Tomsk area of the Tomsk Region was laid in 2016. The soil of the experimental field is characterized by a strongly acidic environment, weak humus content, high nitrate nitrogen content, high mobile phosphorus content and low exchange potassium content. The change of agrochemical parameters of gray podzolized soil is shown. Application of lime in a full dose (7,2 t/ha) contributed to a significant decrease in soil acidity, an increase in the amount of metabolic bases and the degree of soil saturation bases. When lime was introduced in different doses, an increase in the yield of oats to 1,8-7,5 c/ha of grain units was observed, which is 7,4-30,7% higher than in the control variant and peas to 1,6-7,9 c/ha of grain units (11,7-58,1% higher than the control). Significant increases in the yield of oats and peas were obtained by applying lime in full dose (7,2 t/ha).