Because of the scanty rainfall of arid regions, the soluble materials in the rocks and soil are not leached out as they are where the rainfall is high. As a result, the accumulation of excessive quantities of soluble salts is likely to be a menace to arid soils. Farm practices must be directed toward preventing this condition.
Harris, F. S. and Butt, N. I., "Bulletin No. 169 - The Use of Alkali Water for Irrigation" (1919). UAES Bulletins. Paper 135.