The research targets the interaction between plant growth, soil fertility, and the biogeochemically mediated turnover of nutrients and carbon in agricultural soils. Key aspects are an enhanced use efficiency of nutrients added in plant residues and animal manure, a reduced emission of greenhouse gasses, reduced losses of nutrients to the environment, and the protection of soil fertility. To meet these goals an improved synchronisation and synlocation of nutrient availability and crop demand is a key research area in the section.