A History of Agriculture in India v1.c8.s2.t3.3

v1.c8.s2.t3.3

The soils grade from the poor, thin, gravelly and light-coloured varieties of the uplands to the much more fertile, deep, dark varieties of the plains and the valleys. They are generally poor in nitrogen, phosphorus and humus. Compared with regur, they are poor in lime, potash and iron oxide, and are also uniformly low in phosphorus. The clay fraction of the soils is rich in kaolinite.