Irrigation

Irrigation

Terms related to the science of artificial application of water to the land or soil.

Industry: Agriculture

Add a new term

Contributors in Irrigation

Become a Contributors

Irrigation

effective rainfall

Agriculture; Irrigation

The portion of a rainfall that infiltrates into the soil and is stored for plant use in the crop root zone. During a rainfall event, part of the rain will run off the surface of the soil, get ...

permanent wilting point (PWP)

Agriculture; Irrigation

Soil water content at which plants can no longer get water from the soil and will wilt and die. When soil water contents fall below this level, irreversible wilting and crop damage occurs. Soil ...

irrigation interval

Agriculture; Irrigation

The time period between the start of successive irrigations.

A category of trickle irrigation in which water is applied to the soil surface in discrete or continuous drops, or tiny streams through emitters. The terms drip and trickle irrigation are often used ...

Deep percolation

Agriculture; Irrigation

Movement of water downward through the soil profile below the root zone. This water is lost to the plants and eventually ends up in the groundwater. These water losses can be significant and are ...

Distribution uniformity

Agriculture; Irrigation

Test for determining the evenness or uniformity of irrigation water over an area. Numerical indices of uniformity include DU (distribution uniformity of the low quarter) and CU (Christiansen's ...

Drip irrigation

Agriculture; Irrigation

Also known as trickle or micro-irrigation. Water is applied at very low flow rates (drip) through emitters directly to the soil. Emitter flow rates are generally less than 3 gallons per hour.