Walter Schäfer

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Nitrate leaching from agricultural fields still is a serious threat in temperate regions, as it often causes an exceeding of the legal nitrate threshold in the groundwater. It was often proposed to lower mineral nitrogen (N) fertilization, but suboptimal N rates are usually associated with severe yield losses. Here it was hypothesized that the crop type has(More)
The increasing demand for individual and customized products constrains industrial companies to produce lower quantities which caused higher setup timeso fthe machines and therefore higher costs per piece compared to their traditional mass production. Especially within small and medium enterprises, the setup processes often takeplace manually. However,(More)