Energy crops for biogas production need to be integrated into sustainable and site
adapted crop rotation systems, minimising the competition with food production.
Luzerne/clover (-grass), sun flower, maize, green-rye + maize and vetch-rye + maize
were compared at two sites in Austria with semi-arid (Raasdorf) and humid (Lambach)
conditions with and without biogas slurry application. The yield of legumes and
fertilised non-legumes at the humid site were 9 % to 56 % higher then at the semi-arid
site. The 2-crop system maize following vetch-rye achieved the highest yields at both
sites. Slurry from the biogas plant increased the yield only at the humid site
