{Project} DOK: DOK-Versuch (Langzeituntersuchung zu biologisch-dynamischen, organisch-biologischen und konventionellen Landbausystemen). [DOK Trial (long-term trial comparing bio-dynamic, organic, conventional).] Runs 1978 - 2011. Project Leader(s): Mäder, Paul and Fliessbach, Andreas, Research Institute of Organic Agriculture (FiBL), CH-5070 Frick. More information online at <http://www.fibl.org/de/schweiz/forschung/bodenwissenschaften.>.