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Oilseed rape

The word "rape" as applied to oilseed crops is derived from the Latin word rapum that means turnip. Today turnip rapes and the similar but more common swede rapes are grown for their oil and are widely recognised by their bright yellow flowers that can be seen from late april onwards.


the familiar yellow flowers Rapeseed crops have been cultivated throughout much of the world for at least four thousand years although it was not until the 13th century in Europe that this was done on a commercial scale. At the time its primary use was as a lamp oil but prior to this the oils had been used in soaps and for other purposes.


flower detail

In 1740 Carl Linnaeus noted that the crop had a useful soil improving role that aided the performance of following crops. This is a role that is still vital today and oilseed rape is known as a "break crop" - one that helps improve the yield of the following cereal crops, in particular wheat.


the crop at harvest Despite its useful role as a break crop, oilseed rape cannot be grown too regularly in the same field for the risk of a serious disease build up. Oilseed rape is always grown as part of a farm rotation and rarely returns to the same field more than one year in three. Other important break crops include, potatoes, sugar beet, grass leys, peas and beans all of which allow insects and fungal pests to die out between cereal crops.


harvested seeds In the UK the oilseed rape crop was barely known until the 1970's when the explosion in commodity prices and targeted support from the CAP raised the price to a sufficiently high level that farmers chose to grow it. Now, around 400,000 hectares of oil seed rape is grown annually, roughly one eighth of the area of wheat and barley. Most of this is autumn sown and known as winter oilseed rape.


oil seed rape in store Oilseed rape is not a very high yielding crop by comparison with cereals. Typically winter rape yields around 3 tonnes per hectare compared with 8 tonnes per hectare for wheat. However, with a higher price and the "break crop" benefit to the following wheat crop, oilseed rape remains an important crop in the arable rotation and currently the UK is about 90% self sufficient.


vegetable oil - produced from oil seed rape Today's varieties of oilseed rape have been bred to provide an oil that is suitable for use in cooking and food processing. Known as vegetable oil, the oil is widely used by the food industry and is now being increasingly processed for use as biodiesel.


Further readingFurther reading for Oilseed Rape - Production cycle





Statistics for Oilseed rape in the UK

Oilseed rape in the UK
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
Production area oilseed rape
(000 hectares)
402 451 432 542 558 593 575 681 598 581 642
Production volume oilseed rape
(000 tonnes)
1157 1157 1468 1771 1609 1902 1890 2108 1973 1912 2230
Oilseed rape value incl area payments
(£ millions)
249 276 298 423 376 263 310 422 620 469 702
Yield - oilseed rape
(tonnes / hectare)
2.9 2.6 3.4 3.3 2.9 3.2 3.3 3.2 3.3 3.4 3.5
Total new supply oilseed rape
(000 tonnes)
1396 1746 1587 1634 1701 1773 1809 1907 1930 2214 2138
Oilseed rape production as % UK use
(%)
83 66 92 108 94 107 103 111 102 88 104


June Census statistics for Oilseed rape in the UK


Oilseed rape in the UK
1900
1910
1920
1930
1940
1950
1960
1970
1980
1990
2000
Oilseed rape
(Hectares)
3,857 342,758 294,102