Studies and doctorate in agricultural sciences at the University of Kassel-Witzenhausen, Germany. Postdoc at the professorship for organic farming in Giessen, Germany. Since 2004 on-farm-research in Germany at the Foundation Ecology & Agriculture. Until 2008, the main focus was on crop rotation, tillage and weed control in organic farming. From 2009 to 2021 intensive investigations of practical cultivation of soybeans, blue sweetlupines, grain peas and faba beans on organic and conventional farms. Since 2018 studies on fields with clover species and alfalfa, pure and in mixtures with grass.
