Irrigation

Irrigation

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

Industry: Agriculture

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Irrigation

Low-energy precision application (LEPA)

Agriculture; Irrigation

The use of drop tubes on a centre pivot or lateral-move systems to apply water at low pressures very near or directly onto the soil surface. This increases efficiency and uniformity. Furrow dikes ...

Leaching requirement (LR)

Agriculture; Irrigation

The amount of water that is required during an irrigation to flush excessive soil salts from the plant root zone in runoff, deep percolation, or lateral seepage.

Individual irrigation system

Agriculture; Irrigation

Systems located downstream of the outlets served by the collective irrigation system and meant to deliver water to the farms or fields of an individual area.

Inlet structure

Agriculture; Irrigation

A structure built at the upstream end of the outlet conduit of the outlet works and housing the regulating or emergency gates; usually combined with the trash rack structure.

Level basin

Agriculture; Irrigation

Water is applied at relatively high flow rates to a completely level field. Precision laser levelling is required to achieve the level fields suitable for this method.

Line source

Agriculture; Irrigation

Continuous source of water emitted along a line. Usually associated with drip irrigation where emitters are spaced at regular intervals in poly-tubing.