Permanent wilting percentage

Permanent wilting percentage

The water content of a soil at which crop plants wilt and fail to recover after soil water content is increased. It is often estimated by the amount of water at -1.5 mega Pascals soil matric potential.

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Part of Speech: noun
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Industry/Domain: Agriculture
Category: Rice science
Company: IRRI
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permanent wilting percentage

Agriculture; Rice science

The water content of a soil at which crop plants wilt and fail to recover after soil water content is increased. It is often estimated by the amount of water at -1.5 mega Pascals ...

permanent wilting percentage

Engineering; Civil engineering

Soil water content below which plants cannot readily obtain water and permanently wilt. See wilting point.

permanent wilting percentage

Plants; Horticulture

The moisture percentage of soil at which plants wilt and fail to recover turgidity (15 atmospheres). It is usually determined with dwarf sunflowers. The expression has ...

watershed

Agriculture; Rice science

The total area from which a single river collects surface water runoff; the catchment or drainage area of a river system.

watershed degradation

Agriculture; Rice science

A marked deterioration in the hydrological behavior of a river system which reduces the potential of land and water by causing a water flow of inferior quality, quantity and ...

waterlogging

Agriculture; Rice science

Impeded drainage; or soil saturated with water but not necessarily with standing water.

waterlogged field

Agriculture; Rice science

A field which continuously has standing water and cannot be drained. The water level may not be deep.

water use efficiency

Agriculture; Rice science

1). Expressed in terms of dry matter or harvested portion of the crop produced per unit of water consumed. 2). Ratio of the water used for evapotranspiration, seepage, and ...

water table

Agriculture; Rice science

The upper surface of ground water and the level below it where the soil is saturated with water.

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