Alkali soils

As the word akali correspond to sodic, the notion alkali soil is, similar to the notion sodic soil, is not explicit.Alkali, or alkaline, soils are clay soils with a comparatively high exchangeable sodium percentage, a relative high pH (> 9), a poor soil arrangement and a little infiltration capacity. Frequently they have a hard calcareous layer at 0.5 to 1 m. depth in India this coating is called