Trickle irrigation is becoming popular throughout the world largely because of the shortage of water available for agriculture. In contrast with surface and sprinkler irrigation methods, in trickle irrigation water can be applied to the root zone of individual plants. For crops, water may be applied under low pressure and water use efficiency can be as high as 90% or more and the ground slope is no longer a serious limitation. Trickle irrigation systems can be designed either analytically or numerically under the assumption of constant or varying discharge. This chapter presents basic concepts of trickle irrigation and different design approaches, and illustrates them with examples.
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