The organic mixed farm tries to emulate natural eco-systems by
establishing closed cycles of nutrients and matter as far as possible.
Organic farming systems in Germany are traditionally based on crop
rotations of 5 to 7 years with 4 to 5 years of cash crops and grain
legumes and 1 to 2 years of leguminous ley crops (e.g. clover/grass or
alfalfa/grass) serving as green manure, animal forage as well as weed
and pest control.