Nearly six tenths of the earth’s land receives less than twenty inches of rain a year, and Widtsoe sets out how much of it can be farmed without irrigation. He explains the climate and soils of the dry regions, the roots of plants, storing water in the soil, tillage to conserve moisture, fallowing, and the crops and methods suited to semi-arid land.
A landmark of agricultural science from the American West, still relevant where water is scarce. Download the free EPUB.