At the invitation of the Competence Centre for Microeconomic Evaluation (CC-ME) of the Joint Research Center (JRC) of the European Commission in Ispra, Philipp Mennig presented current research results on March 26th on the topic of "Yield and profitability impacts of reducing fertilization in nitrate-polluted areas". The presentation was part of a regular microeconometric seminar series organized by the CC-ME. It is intended to promote discussions between JRC scholars and external researchers from academia and other institutions. Moreover, it shall disseminate advanced research methodologies and topics in the field of microeconomic evaluation.