Effects of long-term crop rotations, preceding crops, N-fertilization and crop residue incorporation on yield and protein content of winter wheat and following spring barley [German]

摘要

The effects of 13 different crop rotations with varying proportions of cereals, legumes and root crops were compared under two different climatic regimes. Additionally, the effects of different nitrogen levels, cover crops and crop residue incorporation were determined by the yields of winter wheat (first following year) and spring barley (second following year) as test crops after each complete rotation.