tobacco
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tobacco, common name of the plant Nicotiana tabacum and, to a limited extent, Aztec tobacco (N. rustica) and the cured leaf that is used, usually after aging and processing in various ways, for smoking, chewing, snuffing, and extraction of nicotine. Various other species in the genus Nicotiana are grown as ornamentals, known collectively as flowering tobaccos. This article deals with the farming of commercial tobacco from cultivation to curing and grading. Though tobacco is tropical in origin, it is grown throughout the world. Cultivated tobacco (N. tabacum) requires a frost-free period of 100 to 130 days from date of transplanting ...(100 of 1596 words)