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Rajasthan soils are grouped by NBSS&LUP into Entisols, Inceptisols, Aridisols, Vertisols and Alfisols, with Entisols forming the largest share.
Western sandy arid soils dominate districts such as Jaisalmer, Bikaner, Barmer, Churu, Jodhpur and Nagaur and are low in organic matter and moisture.
CAZRI at Jodhpur is linked with arid soil-water management, dune stabilisation, shelterbelts, rangelands and desertification control.
Eastern alluvial soils of the Banas-Chambal side support crops such as wheat, mustard, gram, bajra and pockets of sugarcane.
Hadoti black soils in Kota, Bundi, Baran and Jhalawar are clayey, moisture-retentive Vertisols suited to soybean, wheat, mustard, coriander and garlic.
Southern red-loamy soils in Banswara, Dungarpur, Pratapgarh and nearby Aravalli areas derive their red colour from iron oxides in crystalline rocks.
Saline-alkaline soils around Sambhar, Didwana, Pachpadra and the Luni tract result from aridity, evaporation, weak drainage and salt accumulation.
Watershed treatment and Soil Health Cards connect Rajasthan soil conservation with runoff control, nutrient diagnosis and location-specific farm advice.
A Rajasthan Forest Department manual citing NBSS&LUP says Rajasthan soils are classified into five orders: Entisols about 36 percent of total area, Inceptisols about 23 percent, Aridisols about 20 percent, Vertisols about 2 percent and Alfisols below 1 percent; older exam-use groups include desert/sandy soils, dunes and associated soils, brown soils, sierozems, red loams, hill soils, saline-sodic soils, and alluvial and black soils.
Based on PYQ trends and 2026 syllabus analysis
Model Answer
Option B fits the eastern Aravalli-foothill and nearby alluvial setting of Jaipur, Dausa and Alwar. Option A belongs to the far-western desert core, option C belongs to Hadoti, and option D narrows the answer to a salt-lake bed.
