An introduction to drip irrigation systems by Ajai Singh

By Ajai Singh

Drip Irrigation approach is now a longtime approach to irrigation in water scarce parts however it can be gaining value in water ample components. during this expertise, the cropped box is irrigated within the shut region of root sector of crop. It reduces water loss taking place via evaporation, conveyance and distribution. for that reason excessive water use potency will be completed.

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If the differential pressure is very high, a loss of flow can occur which affects the downstream pressure. Another approach for determining the effectiveness of the system is the extent of emitter plugging. A small percentage of emitter plugging can affect the uniformity of water application. Pressure regulators are generally used to decrease the higher system pressure to the required system pressure. e. high to low. 2. Distribution Network The distribution network constitutes main line, sub-main line and laterals with drippers and other accessories.

Here we are concerned about drip system so we will talk about emitters in the following discussion. Besides, gate valves, check valves, pressure gauges and flow control valves are also used to regulate the flow of water and serve as additional components. Several major components of drip irrigation system are shown in Fig. 1. 1. Control Head The control head of drip irrigation system includes the pump or overhead tank, fertigation equipment, filters, and pressure regulator. 1. Pump/Overhead Tank It is required to provide sufficient pressure in the drip irrigation system.

0 lph) are well documented. The wetting patterns during application generally consist of two zones: (i) a saturated zone close to the emitter, and (ii) a zone where the water content decreases toward the wetting front. , 1990). In microdrip irrigation, field observations seem to indicate that there is no saturated zone and that the wetted soil volume is greater compared with that for conventional emitter discharges (Koenig, 1997). The relationship between the water application rate and the resulting water content distribution is complex because it is a three-dimensional outcome related to soil properties and crop uptake characteristics.

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