Ammonia emissions from agriculture

Holger Kirchmann1, Martti Esala2, John Morken3, Martin Ferm4, Wim Bussink5, Jan Gustavsson6 & Christine Jakobsson7 1Department of Soil Sciences, Swedish University of Agricultural Sciences, Box 7104, S-750 07 Uppsala, Sweden; 2Institute of Crop and Soil Science, Agricultural Research Centre of Finland, Fin-31600 Jokioinen, Finland; 3Department of Agricultural Engineering, The Agricultural University of Oslo, Box 5065, N-1432 EAs Norway; 4Swedish Environmental Research Institute, Box 47086, S402 58 Gothenburg, Sweden; 5Nutrient Management Institute, Runderweg 6, 8219 PK Lelystad, The Netherlands; 6Swedish Board of Agriculture, S-551 82 Jonkoping, Sweden; 7Swedish Board of Agriculture, S-751 86 Uppsala, Sweden