water potential

The pressure gradient that induces the flow of water, particularly with reference to plant water uptake from the soil, comprising the net effects of suction, solutes and matric forces.

Glossary of Biotechnology for Food and Agriculture . 2015.

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  • Water potential — is the potential energy of water per unit volume relative to pure water in reference conditions. Water potential quantifies the tendency of water to move from one area to another due to osmosis, gravity, mechanical pressure, or matrix effects… …   Wikipedia

  • water potential — noun (botany) A measure of the free energy of water in a solution, eg in a cell or soil sample, and hence of its tendency to move by diffusion, osmosis or in vapour form • • • Main Entry: ↑water …   Useful english dictionary

  • water potential — The chemical potential (ie. free energy per mole) of water in plants. Water moves within plants from regions of high water potential to regions of lower water potential, ie. down gradient …   Dictionary of molecular biology

  • total soil-water potential —    The sum of the energy related components of a soil water system; i.e., the sum of the gravitational, matric, and osmotic components [22] …   Lexicon of Cave and Karst Terminology

  • Water retention curve — is the relationship between the water content, θ, and the soil water potential, ψ. This curve is characteristic for different types of soil, and is also called the soil moisture characteristic.It is used to predict the soil water storage, water… …   Wikipedia

  • Potential (disambiguation) — Potential may mean:In mathematics and physics: * a Potential: ** Scalar potential ** Vector potential * A potential function, that is, a harmonic function studied in potential theoryIn physics and engineering: * Potential energy * Magnetic… …   Wikipedia

  • Water retention — can refer to: *Edema or peripheral edema *Premenstrual water retention *A water retention curve for soil water potential …   Wikipedia

  • Water content — Soil composition by phase: s soil (dry), v void (pores filled with water or air), w water, a air. V is volume, M is mass. Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture),… …   Wikipedia

  • Water conflict — Water war redirects here. For the type of mock combat, see Water fight. Water conflict is a term describing a conflict between countries, states, or groups over an access to water resources.[1][2][3] The United Nations recognizes that water… …   Wikipedia

  • Potential flow — streamlines around a NACA 0012 airfoil at 11° angle of attack, with upper and lower streamtubes identified. In fluid dynamics, potential flow describes the velocity field as the gradient of a scalar function: the velocity potential. As a result,… …   Wikipedia

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