Kurt Möller

TL;DR: Anaerobic digestion for biogas production leads to several changes in the composition of the resulting digestates compared to the original feedstock (ammonia content, pH, carbon to nitrogen ratio, etc.), which are relevant for the plant availability of macro- and micronutrients after field application as discussed by the authors.

TL;DR: In this article, the effects of biogas digestion on soil mineral N (SMN) content in spring and autumn were assessed and compared to compare NH3 volatilization following superficial application of different manures to a cereal crop.

TL;DR: In this paper, the authors investigated the effects of biogas digestion in a mixed organic dairy farming system with arable land and grassland on nutrient cycling, nitrogen uptake and crop yields within a cropping system comprising a whole crop rotation.

TL;DR: The main findings are that the direct effects of anaerobic digestion on long-term sustainability in terms of soil fertility and environmental impact at the field level are of minor relevance, and potential cropping system-based changes induced by introduction of biogas plants are probably much more relevant for the overall performance and sustainability of the cropper system than thedirect effects triggered by application of digestates in comparison to the undigested feedstocks.

TL;DR: In this paper, a field experiment was carried out by implementing a whole cropping system with a typical crop rotation for such farming systems on the research station Gladbacherhof from 2002 to 2005.