Drip irrigation is an irrigation method that reduces outdoor water use by allowing water to drip:

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Drip irrigation is an irrigation method that reduces outdoor water use by allowing water to drip directly to the roots of the plants. Water drips to the roots of plants, either onto the soil surface or directly onto the root zone, through a network of valves, pipes, tubing and emitters. Drip irrigation method prevents water loss from evaporation or run-off.

Drip Irrigation Is an Irrigation Method That Reduces Outdoor Water