Keywords: soil, sustainability, land management, tillage, soil fertility, nutrient availability, biomass, microorganisms, wheat straw, crop residuesFull text (outside link)
Keywords: Poland, nitrogen, phosphorus, analytical methods, sustainability, soil fertilityFull text (outside link)
Keywords: agricultural policy, agricultural legislation, rural legislation, Germany, soil fertility, environmental protection, nitrogen, nitrogen balance, farms, fertilizer applicationFull text (outside link)
Keywords: agricultural policy, agricultural legislation, rural legislation, European Union, Slovenia, farmyard manure, fertilizer application, nitrogen, humus, micronutrient fertilizers, soil fertilityFull text (outside link)
Keywords: agricultural policy, agricultural legislation, rural legislation, Hungary, optimiation methods, fertilizer application, nitrogen, soil fertilityFull text (outside link)