Soil water is the content of water in an unsaturated system (also, the vadose zone), that is, the soil above the groundwater or the water table. Of particular importance is the nature of water and its interaction with the soil particles.

In the pedosphere, the physical and chemical properties of water regulate the flow of energy and solutes, making soil water a crucial component of terrestrial ecosystems. Many of the familiar...

Soil water makes land-based life possible by satisfying plant water requirements (e.g., for crops and forests), by serving as a medium for nutrient movement to plant roots and nutrient cycling (e.g., fungal and microbial decay, mineralization, fertilization), and by controlling the fate and transport of contaminants in the soil environment ...

Soil acts as a sponge to take up and retain water. Movement of water into soil is called infiltration, and the downward movement of water within the soil is called percolation, permeability or hydraulic conductivity. Pore space in soil is the conduit that allows water to infiltrate and percolate. It also serves as the storage compartment for water.

On the basis of interaction of water molecules with soil, soil water can be classified into three types - Gravitational, Capillary and Hygroscopic Water

Soil water, sometimes referred to as the soil solution, contains dissolved organic and inorganic substances and transports dissolved nutrients, such as nitrogen, phosphorus, potassium, and calcium, to the plant roots for absorption.

Soil-water status can be expressed primarily in two basic ways: (i) soil-water content (SWC) and (ii) soil-matric poten-tial (SMP). In basic terms, SWC is defined as the amount of water held in a certain mass or volume of soil. SWC indicates the quantity of water in the soil; however, it does not indicate the availability of this water to plants.

• Understand how soil texture affects water and plant relations • Recognize how management practices influence soil structure, porosity and soil organisms • Understand relationships between soil chemical properties to exchange capacity, pH and

2025年1月8日 · Soil water is the total amount of water in the soil and covers all forms of water in the soil. It includes liquid water in the soil, solid water (water adsorbed on the surface of soil particles), and gaseous water (water vapor in soil pores).

Water present in soil is following type: (a) Gravitational water: Form of water, which reaches at the soil water table due to the gravitational force after the rainfall. This form is not available to plants but available by mechanical methods or by tube well irrigation. (b) Hygroscopic water: