Soil solkution and methods of its investigation

Abstract
The article describes main categories of soil moisture (hydroscopic, capillary, and gravitational, providing their brief characteristics, and discusses the main advantages and disadvantages of the methods that are currently used to study the liquid phase of soils, such as using water extracts and saturated pastes, displacing soil solution with a substitute liquid, pressing, centrifugation, lysimetry and studying soil liquid phase in situ.