Irrigation is a technique used to water crops and plants. A drip irrigation system decreases the amount of water used. There is no water-runoff, deep percolation, or evaporation. In short water is used more efficiently when irrigation is applied. It also means water is saved when crops are watered and even when there is little rainfall for farmers.
Therefore, we maintains moisture in the soil. This moisture is necessary for the germination of seeds. Seeds do not grow in dry soil. That is why irrigation is done before tilling. Irrigation is essential for the growth of the roots of plants. The roots of plants do not grow well in dry soil. Irrigation is necessary to help plants absorb mineral nutrients from the soil. Thus, irrigation is essential for the general growth of the plants. Water also supplies two essential ingredients to the crop soil — hydrogen and oxygen. Proper irrigation scheduling is vital in order to optimize plant and soil interactions. Water therefore plays important roles in not only plant health, but also in soil fertility.