On a field near Bingen on the Rhine, students of the Technical University of Bingen handed out around 300 kilograms of carbon fertilizer from chicken manure and pig manure over an area of 1,700 square metres. This fertilizer was produced as part of a joint research project by carbonizing the farm manure in a PYREG plant.
The advantage: Untreated manure such as liquid manure consists largely of water and sometimes contains high concentrations of endocrine disruptors or drug residues. Separation, drying and carbonation drastically reduce the amount of liquid manure and result in a hygienised, dry, storable and transportable recycling fertilizer. In addition, large quantities of CO2 emissions are saved.
Greenhouse trials have already shown that the fertilizing effect of carbon fertilizers is just as good as that of conventional mineral fertilizers. Two field trials with maize near Bingen (Germany) and Bell (Germany) should now confirm these results.
(photo © jotily – fotolia.com)