Jatropha curcas, commonly known as the physic nut, is a shrub or small tree that has been extensively researched and promoted as a potential source for biofuel production, specifically biodiesel and bioethanol. Its seeds are rich in oil that can be processed into biodiesel, and the plant material can also be fermented to produce ethanol. While other crops like maize and sugarcane are also used for ethanol production, Jatropha was particularly emphasized in India for its potential to grow on marginal lands.