Low energy precision flooding irrigation apparatus and method

Details Low energy precision flooding irrigation apparatus and method Low energy precision flooding irrigation apparatus and method

1996-08-02

1999-03-16

Graysay, Tamara L.

Hydraulic and earth engineering

Drainage or irrigation

Having regulation of flow through channel

239562, A01G 2502

Patent

active

058821414

ABSTRACT:
An irrigation conduit (10) includes a plurality of emitters (11) spaced apart along its length. A conveyance channel (12) is connected to each emitter (11) and is long enough so that a distal end (14) of the conveyance channel (12) may be positioned at or just above the soil surface with the conduit (10) buried below the soil surface. Each emitter (11) or each conveyance channel (12) includes associated with it a flow control arrangement (30) to control the rate of flow through the conveyance channel (12) when water is applied to the conduit (10) at a desired pressure and flow rate. The flow rate through each conveyance channel (12) exceeds the local hydraulic loading rate of the soil adjacent to the conveyance channel (12). The rate in excess of the local hydraulic loading rate causes localized flooding and allows the water to spread out substantially across the soil surface prior to moving downwardly into the soil.

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