Novosad K.
Candidate of Agricultural Sciences, Associate Professor Kharkiv National
Agrarian University named after V.V. Dokuchaev, Kharkiv City, Ukraine
Dehtiarov Yu.
Candidate of Agricultural Sciences, Associate Professor Kharkiv National
Agrarian University named after V.V. Dokuchaev, Kharkiv City, Ukraine
Gavva D.
Candidate of Agricultural Sciences, Associate Professor Kharkiv National
Agrarian University named after V.V. Dokuchaev, Kharkiv City, Ukraine
PHYSICAL CHARACTERISTICS OF DEEP TYPICAL BLACK SOILS
OF EASTERN FOREST-STEPPE OF UKRAINE
Introduction. Soil regimes are closely interconnected, the change of one of them
leads to a change of the others, but all of them almost immediately respond even to a
slight dynamics of soil structural state, while the structural regime itself is the most
stable one and almost permanent [1].
Within the repertoire of features for soils' characterization and evaluation the most
used are morphology of soil profile, material composition of the soil, its physical and
chemical parameters. These characteristics can collectively define soil properties,
which are the result of the factors and processes that took place in the past, as well as
those properties that are the result of current soil formation processes [9, 11, 12].
Determination of the specific surface of the soil is widespread in various branches
of pedology, and measurements' results of this value are used to assess mineralogical,
microaggregate and granulometric composition of the soil. Such an extremely
important part of the soil as the value of its absorbing complex is established, to a
significant extent, by the granulometric composition, which characterizes the solid
phase of soils, reflects the processes occurring in them as well as rocks lithology. There
is a connection between the specific surface and the water-retaining ability of the soils,
as well as there is detected a dependence of the soil moisture potential from moisture
content in soils, the amount of moisture not available for plants, the capacity of cation
exchange, the content, composition and quality of colloids in the soil. It will be enough
to remind that such important constants as maximum hygroscopicity, moisture content,
filtration ability, microbiological processes are changing in dependence to the
granulometric and microaggregate composition of soils [2].
Analysis of physical (granulometric and microaggregate compositions, steady-
state and solid phase density of soil, structural state, porosity, etc.), hydrophysical
(capillary, total and field moisture capacities, maximum hygroscopic property) and
electrophysical (electrical conductivity) parameters of deep typical black soils of
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