Variability of Soil Nutritional Parameters in Small-plot Experiment with Mineral Fertilizers Application in Different Depth

The article considers with soil agrochemical parameters variability when mineral fertilizers applying at different depths. In micro-field experiment with maize plants and mineral fertilizers applied in different soil layers were studded nutritional elements assimilation from depth 0-80 cm. The need for differentiated application of fertilizers to different depths is shown. This will allow plants to use nutrients from different soil layers, depending on their growing stage and the root placement. The availability of nutrition elements from several soil layers for plants is shown, taking into account not only the removal of nutritional elements by plants, but also the features of the structure, growth, distribution and functioning of the root system. Based on the results of chemical analysis of plants and soil, a quantitative assessment of the assimilation of nutrients from the studied soil layers was carried out. This study allows us to expand our understanding of the role of soil layers with their characteristic moisture conditions, the level of fertility and the features of root placement in the formation of the corn crop and the impact on feed quality.