The study was conducted to evolution of soil organic carbon under different cropping systems in hot arid region, India. SOC ranged from 1.8 to 4.9 g kg-1 with mean value of 3.0 g kg-1. Guar-wheat (3.90 g kg-1) cropping system possessed significantly higher SOC content. pH values of soil ranging from 7.9 to 8.7 with mean value of 8.1. electrical conductivity (EC) value varied from 0.4 to 6.2 dS m-1 with mean value of 0.5 dS m-1. Cation exchange capacity (CEC) in soils of arid egions varied from 2.6 to 6.8 cmol (p+) kg-1 with mean value of 5.0 cmol (p+) kg-1. available nitrogen content varied from 810.6 to 102.3 kg ha-1with mean value of 61.4 kg ha-1 whereas the available phosphorous ranged from 8.5 to 24.8 kg ha-1 with mean value of 17.2 kg ha-1. Wheat based cropping systems ground-wheat (19.50 kg ha-1) and guar-wheat (19.43 kg ha-1) had significantly higher available phosphorous. Guar-wheat cropping systems maintained significantly higher (248.30 kg ha-1) available potassium content. soil organic carbon was significantly positive correlated with cation exchange capacity available nitrogen phosphorus and potassium.