Sistema Azud, S.A.
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Implementation of Subsurface Drip Irrigation – Video

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It is an irrigation system that uses a main network to distribute the filtered and pressurized water to the emitting pipes under the surface of the terrain and together the crop line. The emitters in line supply a unique flow rate by each emitting point that is among the interval of 0,6-8l/h.

The volume of water supplied under the surface of the soil (nearest the plants) generates a spatial distribution of the same named “dump bulb”. The shape and size of this “dump bulb” is different from the surface localized irrigation.

The volume of water supplied under the surface of the soil (nearest the plants) generates a spatial distribution of the same named “dump bulb”. The shape and size of this “dump bulb” is different from the surface localized irrigation. The water is distributed in all the directions by capillarity conditioned by the continuous action of the gravity. The shape of the “dump bulb” depends on the type of soil, the flow rate of the emitters and the irrigation practice (frequency and time of each irrigation).

Depending on the separation of these points, the flow rate, the type of soil and the irrigation practice it is possible to have so much “dump bulbs” as emitting points or one unique and continuous dump band by each emitting line.
The sub-surface localization permits the pipe is not exposed in the surface and the water distribution patron generated is different with a reduced/null wet area in the surface when a suitable irrigation practice is done. All the economic, agronomic and ecologic advantages are inherent to the sub-surface localization (not exposed in the surface) and to the water distribution patron generated under this circumstance (lack of water on the soil surface).

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