Same as permanent wilting percentage, as defined in standard plant physiology texts.
(WP) 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. cf. permanent wilting point.
moisture content of a soil at which Dlants (specifically sunflower plants) wilt and fail to recover their turgidity when placed in a dark. humid atmosphere .
Point at which the rate of moisture loss from the leaf surface is greater than the uptake from plant roots. The wilting point differs in various soil types according to texture.
Value of soil moisture, expressed as a percentage of the mass of dry soil, below which a plant living in the soil dies by wilting.
The water content of a soil when an indicator plant (or common agricultural crop) can no longer draw water from the soil, even if atmospheric water demand is zero (near saturated atmosphere and plant and atmosphere at uniform temperature); often estimated as a soil water potential at 15 bars (or atmospheres). For many agricultural soils, this represents a loss of about half the total water-holding capacity of a soil.
the amount of water in a soil when a plant cannot obtain enough water to remain turgid.
The percentage by weight of water remaining in the soil when the plant wilts permanently.
