|Title||Ökologischer und biodynamischer Weinbau in der Forschung – Langzeitversuch INBIODYN|
|Publication Type||Conference Proceedings|
|Year of Publication||2015|
|Authors||Döring, J, Meißner, G, Stoll, M, Kauer, R|
A viticultural field trial comparing different management systems (integrated, organic, biodynamic) was established at Geisenheim University, Geisenheim, Rheingau, Germany, in 2006. Yield, pruning weight and sugar content of the must differed significantly between treatments over a 7-year-period (2006-2012). The integrated treatment showed significantly higher pruning weight, yield and significantly lower sugar content of the must compared to the two organic treatments. No differences between the organic and the biodynamic treatment occurred. Furthermore, the different management systems did differ neither in must acidity nor in pH. Reasons for the changes in growth, generative performance and must quality such as differences in nutrient availability, water availability and disease frequency will need to be discussed. Decreases in yield and pruning weight of organic compared to integrated viticulture have been observed in former studies, but this is the first time changes in must quality in a long-term field trial are detected.