References

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[2]   Environmental technology list. (2017). http://eng.mst.dk/topics/agriculture/environmental-technologies-for-livestockholdings/land-applied-manure/  Retrieved 5 june, 2017 

[3]   Erisman, J. W., & Schaap, M. (2004). The need for ammonia abatement with respect to secondary PM reductions in Europe. Environ Pollut, 129(1), 159-163. 

[4]   Fangmeier, A., Hadwiger-Fangmeier, A., Eerden, L. V. d., & Jäger, H. J. (1994). Effects of atmospheric ammonia on vegetation - a review. Environ Pollut, 86, 43-82. 

[5]   Fangueiro, D., Hjorth, M., & Gioelli, F. (2015). Acidification of animal slurry--a review. J Environ Manage, 149, 46-56. doi: 10.1016/j.jenvman.2014.10.001 

[6]  1999 Protocol to Abate Acidification, Eutrophication and Ground-level Ozone to the Convention on Long-range Transboundary Pollution (2005). 

[7]    Husdyrgødningsbekendtgørelsen, BEK nr 374 af 19/04/2017 (2017). 

[8]    Marschner, P. (2012). Mineral nutrition of higher plants (Vol. 3): Acedemic press. 

[9]    Nielsen, O.-K., Plejdrup, M. S., Winther, M., Mikkelsen, M. H., Nielsen, M., Fauser, P., Thomsen, M. (2017). Annual Danish Informative Inventory Report to UNECE. Emission inventories from the base year of the protocols to year 2015. Aarhus University, DCE - Danish Centre for Environment and Energy,. Scientific Report from DCE - Danish Centre for Environment and Energy http://dce2.au.dk/pub/SR222.pdf, 222. [10]  Seidel, A., Pacholski, A., Nyord, T., Vestergaard, A., & Kage, H. (2014). Reduction of ammonia losses after [1] spreading of cattle slurry to grassland by acidification and injection. Summary of two years experiments. 

[11]  Stevens, R. J., Laughlin, R. J., & Frost, J. P. (1989). Effect of acidification with sulphuric acid on the volatilization of ammonia from cow and pig slurries. Journal of Agricultural Science, 113, 389-395. 

[12]  Status, economy and considerations by acidification of slurry - Erik Sindhoj – RISE, 11. 

[13]  Merskörd av vall i svenska fältforsök - Baltic Slurry Acidification – Erik Sindhoj - RISE 

[14]  Sutton, M. A., Erisman, J. W., Dentener, F., & Moller, D. (2008). Ammonia in the environment: from ancient times to the present. Environ Pollut, 156(3), 583-604. doi: 10.1016/j.envpol.2008.03.013 VERA. (2012). VERA verification statement (SyreN).