Agriculturists in semi-arid regions of Rajasthan follow crop-rotation and use guar to replenish the soil with essential fertilizers and nitrogen fixation, before the next crop. Guar has many functions for human and animal nutrition, but the gelling agent in its seeds (guar gum) are the most important use. Demand is rising due to the use of guar gum in hydraulic fracturing (oil shale gas). About 80% of world production occurs in India, but due to strong demand, the plant is being introduced elsewhere.