irrigation

Much of the Ogallala Aquifer — which supplies nearly a third of the nation’s irrigation groundwater — could be gone by the end of the century.

Each year their fields need at least 53 billion cubic meters of water for irrigation.

The air mixed with fertilizers and pesticides that for decades were washed from the fields into the sea by irrigation water.

It thus falls to IS to provide drinking water and irrigation to massive areas of farmland.

Egypt's future irrigation and industrial needs require a major increase in the northward flow of the Nile River.

Later: a tall, silo-like cement building, apparently used for irrigation.

I'd rather settle on the water; at least, until some gigantic system of irrigation is perfected in the West.

Flat land, with a gentle slope, is best suited for irrigation.

Here is a fine creek for mills and irrigation, good land for cultivation, fine pasturage, timber and stone for building.

It is the oldest form of irrigation; the hieroglyphics show that it was in use in Egypt five thousand years ago.

Not even the fertility of the irrigation waters will maintain the land in the face of poor agricultural practice.