permanent wilting point

   Saturation at which permanent wilting occurs [16].

A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. . 2002.

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  • Permanent wilting point — (PWP) or wilting point (WP) is defined as the minimal point of soil moisture the plant requires not to wilt. If moisture decreases to this or any lower point a plant wilts and can no longer recover its turgidity when placed in a saturated… …   Wikipedia

  • permanent wilting point — Abbreviation: PWP The moisture content of a soil below which plants wilt to such an extent that they fail to recover even when fully watered …   Glossary of Biotechnology

  • wilting point — The moisture content of soil at which plants start to wilt, but not to the extent that they fail to recover when placed in a humid atmosphere. See: permanent wilting point …   Glossary of Biotechnology

  • wilting coefficient — noun also wilting point : the level of soil moisture at which water becomes unavailable to plants and permanent wilting ensues echard …   Useful english dictionary

  • Pedotransfer function — (PTF) is a term used in soil science literature, which can be defined as predictive functions of certain soil properties from other more available, easily, routinely, or cheaply measured properties. This concept arises in soil science as… …   Wikipedia

  • Available water capacity — or available water content (AWC) is the range of available water that can be stored in soil and be available for growing crops. [cite book |author=Richards, L.A. and Wadleigh, C.H. |year=1952 |chapter=Soil water and plant growth |title=Soil… …   Wikipedia

  • Irrigation in viticulture — A vineyard with a drip irrigation system running along the bottom of the vines The role of irrigation in viticulture is considered both controversial and essential to wine production. In the physiology of the grapevine, water is a vital component …   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

  • Moisture equivalent — is proposed by Lyman Briggs and McLane (1910) as a measure of field capacity for fine textured soil materials. Moisture equivalent is defined as the percentage of water which a soil can retain in opposition to a centrifugal force 1000 times that… …   Wikipedia

  • Xerophyte — The Joshua tree is an example of a xerophyte. A xerophyte or xerophytic organism (from Greek xero dry, phuton plant) is a plant which has adapted to survive in an environment that lacks water, such as a desert. Xerophytic plants may have adapted… …   Wikipedia


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