This zone comprises all tchsils of Nagaur, Sikar and Jhunjhunun districts and Taranagar, Churu and Rajgarh tehsils of Churu district. The area is covered with sand dunes and inter- dunal sandy plains. Drainage is not well developed and streams, which flow in the rainy season, disappear in sandy fields after covering some distance. Climatically, this zone is slightly better as compared to the adjoining zone of the Arid Western Plain. Rainfall is slightly higher, temperatures in summer months do go very high but the winters are very cold.
Irrigation is restricted to areas with good ground-water potential.
Bajra, sesamum and kharif pulses are the main crops of the rainy season. Wheat, barley, mustard and gram are grown as irrigated crops or on conserved soil moisture during Rabi. This area lies beween the Aravalli ranges and western arid region. The region encompasses the entire disricts of Jalor and Pali, Reodhar and Sheoganj tchsils of Sirohi district, and Bilara and Bhopaigarh tehsils of Jodhpur district. The region has semi-arid climate with an annual rainfall of 30 to 50 cms.