Efficiency of herbicides for spring wheat sowings
On grey forest soils of the Bryansk Opolie shows that agricultural processing will fundamentally alter the physical state of soil, leading not only to reduce the content of agronomically valuable aggregates, but also reduce their water stability. This is accompanied by the reduction of soil expansibility and primarily should be explained by reduce of the content of humus compared to non-tilled place. Complex soil cover composed of the soils with contrasting humus content does not clearly extract the role of specific soil treatment, however, the change sequence forest-field-permanent treatment are clear.