Kurzfassung

Rhineland-Palatinate is Germanys largest wine growing region which produces about 6.8 million hL of wine annually. The recently launched collaborative project in the frame of the ‘Carl-Zeiss-Stiftungs-Kooperationsfonds für Nachhaltigkeitsforschung’ focusses on the risk-benefit assessment of the use of grape pomace (GP) from the region ‘Pfalz’ in Rhineland-Palatinate as a natural fertilizer.

GP contains high loads of bioactive compounds such as polyphenols and macro- as well as micronutrients...Rhineland-Palatinate is Germany´s largest wine growing region which produces about 6.8 million hL of wine annually. The recently launched collaborative project in the frame of the ‘Carl-Zeiss-Stiftungs-Kooperationsfonds für Nachhaltigkeitsforschung’ focusses on the risk-benefit assessment of the use of grape pomace (GP) from the region ‘Pfalz’ in Rhineland-Palatinate as a natural fertilizer.

GP contains high loads of bioactive compounds such as polyphenols and macro- as well as micronutrients which, in theory, make GP an attractive low-cost fertilizer. On the other hand, GP may also contain residues of pesticides and mycotoxins. Their presence is undesirable in wine as well as in a potential fertilizer. The application of high amounts of the above mentioned substances at once could negatively affect plant quality and microbial soil communities. Therefore, the agricultural value of GP as a fertilizer could be limited by the transfer of these compounds into the soil. Up to date little is known about the influence of GP as fertilizer on the soil quality and processes, especially in a long-term exposure.

In this project we aim to determine the content of polyphenols, mycotoxins and pesticides in addition to the macro- and micronutrient content of GP from six different grape varieties. Furthermore, the effect on important soil parameters, such as nutrient availability, hydrodynamics, and microbiology will be analysed and evaluated.

The project is carried out by two Rhineland-palatine universities, Universität Koblenz-Landau, Campus Landau, Institut für Umweltwissenschaften IES, AG Organische und Ökologische Chemie/ AG Umwelt und Bodenchemie in cooparation with TU Kaiserslautern, Fachbereich Chemie, Fachrichtung Lebensmittelchemie und Toxikologie.» weiterlesen» einklappen