Humans have used oil pressed from the seeds of plants known as rape for thousands of years. The name rape originated from the Latin word “rapum” which means turnip. Oilseed rape has enjoyed unprecedented popularity in the EU since the 1970s due to support from the Common Agricultural Policy. European production of rapeseed plays an important role in increasing EU self sufficiency in cooking oil. Oilseed rape is harvested from about 3 million hectares in the EU. The crop is attacked by a large number of insects and insecticide use is common. There is little organic rapeseed production in the EU because the insects cannot be effectively controlled.
“The demand for organic winter oilseed rape is steadily increasing. Yet in Germany, for example, oil seed rape cultivation is negligible with a maximum cropping area of 4,000 ha. One important reason for this is the occurrence of insect pests, including the cabbage stem flea beetle, the rape stem weevil, the cabbage stem weevil, the pollen beetle, the cabbage seedpod weevil, and the brassica pod midge. Pest-related yield losses – up to total loss of the crop – make the cultivation of organic winter oilseed rape an incalculable risk.”
Authors: Ludwig, T. and S. Kuhne.
Affiliation: Federal Research Centre for Cultivated Plants.
Title: Mixed cropping with turnip rape and natural insecticides: results of field and laboratory trials on pest control in organic winter oilseed rape.
Source: Integrated Control in Oilseed Crops IOBC-WPRS Bulletin. 2013. 96:43-44.