What term describes the supplying of land with water for crops?

The term that describes the supplying of land with water for crops is irrigation water. Irrigation is a crucial agricultural practice that involves applying controlled amounts of water to crop fields in order to assist with growing plants during periods without sufficient rainfall. This method helps to ensure that crops receive the necessary moisture for optimal growth, increases agricultural productivity, and can aid in land management by preventing soil degradation.

Rainwater harvesting refers to the collection and storage of rainwater for reuse, which can contribute to irrigation but is not the direct process of supplying water to crops. Drainage water involves the removal of excess water from fields and does not pertain to supplying water. Surface water refers to bodies of water such as rivers and lakes that are on the surface of the land and can be sources for irrigation, but the term itself does not specifically indicate the process of applying water to crops. Thus, irrigation water is the most accurate term for the act of supplying land with water to support crop growth.