Tobacco (Nicotiana spp.) is an important cash crop. It is raised for its leaves which are used as cured product. It is smoked as pipe, cigar, cigarette or hookah, and also used as snuff or chewed as a liquid in various forms. India ranks third in the world tobacco production and second in the flue-cured tobacco exports. It earns about Rs 577 crore by way of excise revenue and Rs 112 crores as foreign exchange. Besides, it also provides an employment to about 56 lacs of people annually in its cultivation, curing, grading, factories and cottage industries. It also produces nicotine sulphate which is used as an insecticide. Tobacco seed contains 5-38% nicotine free oil. It is used in making soap and colors. Its cake is used as a cattle feed. Cake contains 3% N, 30-35% crude protein and 20-27% carbohydrates. Some species of tobacco are also utilized as an ornamental plant.