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1. Bilanzierung von Stickstoffflüsen im landwirtschaftlichen Betrieb zur Bewertung und Optimierung der Düngungsstrategien Reinhold Gutser, 2006, original scientific article Keywords: agricultural policy, agricultural legislation, rural legislation, Germany, soil fertility, environmental protection, nitrogen, nitrogen balance, farms, fertilizer application |
2. Nitrogen surplus—a unified indicator for water pollution in Europe? Susanne Klages-Haberkern, Claudia Heidecke, Bernhard Osterburg, John Bailey, Irina Calciu, Clare Casey, Tommy Dalgaard, Hanna Frick, Matjaž Glavan, Karoline D'Haene, Georges Hofman, Inês Amorim Leitão, Nicolas Surdyk, Koos Verloop, Gerard Velthof, 2020, original scientific article Keywords: nitrogen budget, nitrogen balance, water pollution, nitrates, agriculture, drinking water |