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  Sub- Irrigation system   

Sub-irrigation system is a type of irrigation technique that provides water to a plant roots from beneath the soil surface. Sometimes it is also called as seepage irrigation. The water rises through capillary action. This irrigation system is more beneficial to grow various field crops like Tomatoes, peppers, and sugar cane etc.

When sub-irrigation is used in a field, a field's water table must be manually raised in order for a farmer to feed crops from below the soil line. Sub-irrigation system is required to be maintained through pumping stations, canals, gates, and weirs that lower or raise the water level accordingly.

Ditches dug along the fields can be used to monitor the water level and to also replenish the water supply when it is low.

Read more: Irrigation - Sub-irrigation - Water, Systems, Pipes, Salts, Natural, and Drip http://science.jrank.org/pages/3697/Irrigation-Sub-irrigation.html#ixzz1DVBM9SqG
Ditches dug along the fields can be used to monitor the water level and to also replenish the water supply when it is low.

Read more: Irrigation - Sub-irrigation - Water, Systems, Pipes, Salts, Natural, and Drip http://science.jrank.org/pages/3697/Irrigation-Sub-irrigation.html#ixzz1DVBM9SqG
Ditches dug along the fields can be used to monitor the water level and to also replenish the water supply when it is low.

Read more: Irrigation - Sub-irrigation - Water, Systems, Pipes, Salts, Natural, and Drip http://science.jrank.org/pages/3697/Irrigation-Sub-irrigation.html#ixzz1DVBM9SqG
Ditches dug along the fields can be used to monitor the water level and to also replenish the water supply when it is low.

Read more: Irrigation - Sub-irrigation - Water, Systems, Pipes, Salts, Natural, and Drip http://science.jrank.org/pages/3697/Irrigation-Sub-irrigation.html#ixzz1DVBM9SqG

Sub-irrigation is feasible in areas where the topsoil is of high quality and porous and there is an underlay of clay soil that absorbs water slowly, provided that the water table is high. Ditches can be dug along the fields to monitor the water level and to also replenish the water supply when it is low.

In some cases drip irrigation buried about 5 inches under the soil can be provided as an alternative for sub-irrigation system.

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Subsurface irrigation eliminates evaporations and hence save precious water. It is also not affected wind which might result in water losses due to drift or runoff.

It has been reported that sub-surface irrigation has resulted in saving upto about 75% water in many cases as compared to other standard methods of irrigation.

Other irrigation methods

 surface irrigation   sprinkler irrigation   drip irrigation

  The web links on this page will lead you to get more information about irrigation engineering notes, services and products.


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Last updated on Thursday January 31, 2013

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