Scientific Journal of KubSAU

Great practical and theoretical interest comes with a study of the transformation of calcium agrobiogeochemical in agro-ecosystems. The basis of the stability of the soil, as an element of the structure and functioning of the biosphere, constitutes historically approved biochemical cycles and flows of matter and energy, which remain unchanged under anthropogenic impact. Comparative analysis of the total content of calcium leached black soil allowed us to establish its decline after three rotations of grain and grass-tilled crop rotation. Without the use of fertilizers its reduction from baseline was 5.25% in the layer 0-20 cm and 3.87% in the 20-40 cm layer, with their introduction - 9.14 and 9.35%, respectively. This trend suggests a decrease in calcium reserves in the root zone of leached black soil in its agricultural use; this process is more active when using mineral fertilizers. This is obviously due to a large outflow of elements in the fertilizer background with harvest crops, and partly due to the influence of mineral fertilizers as chemical reagents on mineral soils, resulting in the release of calcium and moving it into the lower soil horizons. Along with the total content of calcium and its forms, we have analyzed the activity of calcium ions and calcium potential

The article presents the effect of boron fertilizer on growth, development and productivity of rice plants, the optimal dose and timing of application of boron fertilizers, providing maximum increase grain yield, calculated the economic loss of nitrogen, phosphorus and potassium and crop coefficients of their use of fertilizer plants; we have also established the influence boron fertilizer on grain quality of rice

The efficacy of using "Reasil Universal" multicomponent fertilizers on the rice crops. It is found that the greatest effect for seed treatment before sowing and foliar feeding of plants was reached at a dose of 300 ml/t or ml/ha. This gives better grain yield of rice, respectively, 5, 43 and 5, 79 kg / ha

The article presents the results of studies of the influence of fertilizers on plants height and accumulation of the biomass of alfalfa

Positive effect of microelements on productivity and quality of sugar beet on the leached black soil of the West Fore-Caucasus region has been determined

Positive effect of microelements on productivity and quality grain of corn on the leached black soil of the West Fore-Caucasus has been determined

This article shows the results of the studies of the influence of fertilizers on plant height and accumulation of biomass in alfalfa plants

Based on obtained experimental investigations it is shown that microelements included into winter wheat fertilization system positively influence plants mineral nutrition, quantity and quality of the crop

In the article we show the history of opening of selenium, its distribution in the nature, the value of this microcell in life of plants. We also show the experience of russian and foreign scientists on studying of the influence of selenic fertilizers on a crop and quality of crops