Drip irrigation is a slower and more localized application of water. Drip heads are carefully placed precisely where plants need water. Water is always released below the infiltration rate of the soil, so the drip method is very efficient, losing little water to evaporation. Water is also released more frequently than in other irrigation methods (Crow, 2000).
Drip irrigation offers a high degree of precision and control of water application. Little energy is required because the transmission system uses low water pressures. However, drip irrigation systems are highly susceptible to clogging by suspended particles and biological agents. Water in drip irrigation systems must be filtered, and there is a relatively high maintenance cost, in addition to high setup costs (Hillel, 1987).