Einfluss verschiedener Fruchtfolgen viehhaltender und viehloser Systeme auf Ertrag und Produktivität: Ergebnisse eines Dauerfeldversuches

Summary

In organic crop rotations proportion, use and type of legumes have a different effect on subsequent crops. The yield of subsequent cash crops is affected by the farming system (livestock with organic fertilizer or stockless) and the temporal distance of the cash crop to the legume. To investigate the intermediate- and long-term effects on yield and productivity, a long-term field trial with six crop rotations was established in 1997 in Viehhausen, Upper Bavaria (one crop rotation with a period of 5 years, five crop rotations with 3 years). The present report tested these crop rotations regarding yield and productivity for the years 2000 to 2010.
Significant differences were determined in productivity when legumes were included into the calculation. Crop rotations with grass-clover leys in meadow mowing (with livestock) and the return of the nutrients as manure had the highest productivity. The crop rotations with grain legume showed the same productivity as crop rotations with mulched grass-clover leys.