Irrigation

Irrigation is watering of land by artificial methods. It provides water for growth in areas that have long periods of little or no rainfall. The water used for irrigation is taken lakes, rivers, streams, and wells.

In the mid - 1980’s, about 220 million hectares of land were under irrigation through out the world’s driest continent.

 The amount of water needed for farming varies with the type of crop and the climate. For example, rice requires more water than cotton. Wheat grows in a warm climate needs more water than wheat that grows in cool climate. Any form land must receive enough water to allow both for plants growth and for the evaporation of water from the soil.

In some countries, more water is used for irrigation than for any other purposes. Water conservation and irrigation schemes may be vitally important to a country’s food and agricultural production. As the world is.

Population grows, the demand for water increase steadily. More and more people need water in their homes, and industry must have additional water as production rises.

Irrigation requires large supplies of fresh water. The two main sources of fresh water are surface water and ground water. Surface water is water on the surface of the earth such as in streams, rivers, and lakes. Ground water is stored banners the earth’s surface in spaces between rocks, grains of sand, and other substances, in soil.

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