Permanent wilting point

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

Permanent wilting point (PWP) or wilting point (WP) is defined as the minimum amount of water in the soil that the plant requires not to wilt. If the soil water content decreases to this or any lower point a plant wilts and can no longer recover its turgidity when placed in a saturated atmosphere for 12 hours.

Excerpt from the Wikipedia article “Permanent wilting point”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Pewebe, CC BY-SA 3.0, via Wikimedia Commons.