Soil-water potential (soil-water tension) is a measure of the tenacity with which water is retained in the soil and shows the force per unit area that must be exerted to remove water from the soil. It is measured in terms of potential energy of water in the soil …

The force that governs water movement in soil is called the soil–water potential, and is of a great fundamental importance to soil and soil health considerations as water availability is key to plant growth.

The totalenergy state of soil water is defined by its equivalent potential energy, as determined by the various forces acting on the water per unit quantity. In general, flow rates of water in soils is too small to consider kinetic energy.

Soil water potential is the potential energy per unit quantity of water (Campbell and Mulla, 1990). It is useful for describing the amount of water available to plants and assessing the movement of water in the soil. The most important components of soil water potential are matric potential and osmotic potential.

Soil- water status is a critical and rapidly changing variable that determines and impacts numerous important factors in production fields such as crop emergence and growth, water management, water and crop yield productiv-ity relationships, and within- …

The soil water potential indicates the strength or energy required to remove water from the soil, and it is an indirect measurement of water availability. Plant available water is the difference between field capacity and permanent wilting point, and it is readily available for plant uptake.

Water potential is frequently called water tension, soil suction, and soil pore water pressure. We typically use units of pressure to describe soil water potential, including megapascals (MPa), kilopascals (kPa), bars, and meters (mH 2 O), centimeters (cmH 2 …

Soil Water Energy The movement of soil water is due to two forces: Gravity Capillarity Gravity moves water downward Capillarity moves water in all directions. Potential Energy Energy waiting to be used or exploited

The difference between the energy states of soil water and pure free water is known as soil water potential. Total water potential (Pt) Ψt is the sum of the contributions of gravitational potential (Pg) Ψg, matric potential (Pm) Ψm and the Osmotic potential or solute potential (Po Ψo).

Soil water potential is measured either by measuring some property of the soil which changes with the water potential, or by equilibrating the liquid or gas phase of the water in some reference medium with the liquid phase of the soil and measuring some property of the water in the reference medium.