Influence of Soybean-Based Sideral Communities on the Agrophysical Properties of Chernozems and Their Quality

In the field experiment, the effect of binary sideral mixtures with soybeans on the volume mass, structural coefficient and degree of aggregation of arable and sub-arable horizons of typical heavy loamy chernozem was studied. It is shown that mixing crops in sideral agricultural communities in most cases led to an increase in the yield of subsequent grain crops and an improvement in the studied agrophysical properties. A decrease in bulk weight, an increase in the coefficient of structurality and the degree of aggregation in both the arable and sub-arable horizons were in most cases more effective under mixed agricultural communities compared to the corresponding horizons under variants with clean crops. The most significant was the improvement of agrophysical properties in the soils under the agricultural communities of soybeans + corn and soybeans + sunflower. The ability of mixed sideral agricultural societies to effectively reduce the bulk mass of soils makes it possible to reduce it on over-compacted soils, thereby improving their quality.