INDIAN GEOGRAPHY

Detailed explanation-1: -The largest area in Rajasthan is occupied by desert soil, which covers the area west of the Aravallis up to the Pakistan border. The entire area is ill watered and unproductive and characterized with sand dunes, hillocks and rock outcrops. The soils contain about 90 to 95 per cent sand and about 5 to 7 per cent clay.

Detailed explanation-2: -The types of soil available in Rajasthan are mostly sandy, saline, alkaline and chalky (calcareous). Clay, loamy, black lava soil and nitrogenous soils are also found.

Detailed explanation-3: -India has approximately 4% of total area covered with desert soil in the regions of Rajasthan, adjoining areas of Punjab and Haryana lying between the Indus and the Aravallis, the Rann of Kuchchh in Gujarat, and coastal regions of Orissa, Tamil Nadu, and Kerala (https://en.wikipedia.org/wiki/Desert).

Detailed explanation-4: -Millet (Bajra)-Arid climate and sandy soil of western Rajasthan is suitable for cultivation of Bajra because it can grow in high temperature and less rainfall. It is a major food crop of Rajasthan and it covers largest cultivated area of the state.

Detailed explanation-5: -The Western part of Rajasthan is a desert because the temperature remains very high in summer and the Aravallis lie parallel to the path of the Arabian Sea Branch of the southwest monsoons, there by causing no orographic rainfall.