Mögliche Wirkungswege der biologisch-dynamischenHornpräparate aus naturwissenschaftlicher Perspektive

Although since 1924 the biodynamic hornpreparations (cowhorn manure and cowhorn silica) have been practically used and investigated in several doctoral theses, hardly any attention has been paid at the scientific evaluation and explanation of their effects. The results of experimental studies with the preparations are summarized. To understand their mechanism, an ecological and ecophysiological focus can be used. It shows that at several levels of the agro-ecosystem regulative mechanisms can be found. Bacterial and hormonal effects are found, if the preparations are analysed. These scientific results should be understood and discussed in relation to the anthroposophical or esoteric understanding of the biodynamic preparations.