The change of structural and aggregate light-gray composition of forest soils of the Northern Trans-Urals under long-term plowing conditions

The structure is one of the main agrophysical indicators of the soil. Water and physical and agrochemical properties of the soil, as well as the productivity of arable land depend on it. The aim of the research was to study the effect of prolonged plowing on structural state of light gray forest soils. The soil structure was determined by dry sieving through a column of sieves; water strength of aggregates - by sieving in water. The results of the research of structural and modular structure of arable and light gray forest soils (Luvic Retic Greyzemic Phaeozems (WRB) of the Northern Trans-Urals were presented in the study. The studies were carried out in taiga zone of Tyumen Region at the stationary chemicalization station "Tyumen". It was established that light gray forest soils of the Northern Trans-Urals were characterized by excellent structural condition of the humus layer with good water resistance of soil aggregates. Long-term plowing had a negative impact on structural and aggregate composition of studied soils...