Mobile forms effect of nutrients on grain yield productivity in crop rotation on soil-protecting experimental plot

Abstract

On soils subject to water and wind erosion, there is a decrease in the content of macronutrients and grain yield of crops on various parts of the slope. This phenomenon was a prerequisite for the study of mobile forms of nutrients (NO₃ ^–, P₂O₅, K₂O) and their effect on the yield of grain crops in grain-crop rotation in the soil-protecting experimental plot. The main goal of scientific research is to identify parts of the slope and crops that can increase grain yield depending on nutrients. As a result of field experiments and laboratory analyzes, it was found that the highest yield is observed in the twelfth version of the experiment in barley sowing with biological accounting of 15.6 centners and actual counting is 12.7 centners per 1 ha. On the lower part of the slope, this result was achieved based on the relationship between nitrate nitrogen, mobile phosphorus, and exchange potassium, and their influence on the maximum barley yield was 30.63, 28.65, and 39.52 %. The conducted experiment is important in the field of agricultural soil science, contour landscape agriculture and agriculture.