Environmental impact of cereals and oilseed rape for food and biofuels in the UK, published by the Home Grown Cereals Authority, examines the potential for using the 3 million tonnes of cereals which we currently export as a biofuel instead.
Taking into account the fertiliser inputs to the cultivation process the report concludes that converting these cereals to biofuels instead of exporting them, will result in environmental gains. For instance it finds that biodiesel from oilseed rape would generate about half the emissions of an equivalent quantity of diesel, while bioethanol from wheat would produce only a third of the emissions produced by petrol.
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