Improving the production of winter cereals for bioethanol by cultivation with varied intensity

The investigations were based on biennial field trials carried out at two l ocations comprising the factors location/previous crept winter cereal genot ype (rye cv. 'Farino', triticale cv. 'Modus', wheat cv. 'Batis') and produc tion intensity level. One agronomical focus was to replace the mineral N-su pply due to its energetic relevance, by either the residues of legumes, or stillage, a processing residue containing organic N. The measurement includ ed the crop yield ha(-1), the bioethanol exploitation dt(-1) and the bioeth anol yield ha(-1). The last was closely correlated to the grain yield and t hus dominated by intensity level. Highest bioethanol yields with an average peak at 40221 ha(-1), always occurred at the highest intensity level. Bioe thanol exploitation however, was mainly determined by the genotype. The cul tivars showed significant exploitation and yield differences. An adequate b ioethanol exploitation was observed with the wheat cv. Batis in contrast to diminished grain and bioethanol yields. Considering bioethanol exploitatio n and bioethanol yield, the triticale cv. Modus was the outstanding genotyp e. Despite high grain yields, the bioethanol yields of the rye cv. Farino s tayed mean, because of a genotypic lowered bioethanol exploitation. Compari ng the approaches of mineral nitrogen substitution, legume N was successful , whereas stillage fertilizing, according to the examined conditions, resul ted in ample decreased grain and bioethanol yields ha(-1).