Brassica rapa Brassica rapa Brassica rapa is a plant consisting of various widely cultivated subspecies including the turnip (a root vegetable); napa cabbage, bomdong, bok choy, and cime di rapa (leaf vegetables); and "Brassica rapa subsp. oleifera", an oilseed which has many common names, including "turnip rape", "field mustard", "bird rape", and "keblock". The oil made from the seed is sometimes also called "canola" or "colza", which is one reason why it is sometimes confused with rapeseed oil, but this comes from a different "Brassica" species ("Brassica napus"). The oilseeds known as canola are sometimes particular varieties of "Brassica rapa" (termed Polish
Vegetable oils as alternative energy that yields 20% more oil than the standard variety. There is concern that the current growing demand for vegetable oil is causing deforestation, with old forests being replaced with oil palms. When land is cleared it is often burned, which releases large amounts of the greenhouse gas CO. Vegetable oil production would have to increase substantially to replace gasoline and diesel. With current technology such an increase in production would have a substantial environmental impact. In some poor countries the rising price of vegetable oil is causing problems. There are those that say using a food crop for fuel sets