Research interest

• Studying phosphorus (P) losses at different scales (laboratory, lysimeters, experimental plots, fields catchments)
• Mitigation options for nutrient leaching
• Nitrogen and phosphorus interaction
• Pesticide leaching

Selected current projects

- Improved risk assessment for phosphorus losses at the catchment scale

- Long-term effects of reduced tillage, placement of fertilizers and structure liming on P losses via tile drains 

- Application of manure adapted to P status and soil type in order to reduce P leaching  

- Catch crops for phosphorus 

- Designed wetlands for reduced P from “hot spots” in agricultural areas

Other activities 

- The national program Focus on Nutrients

- EU COST program Mitigation Options for Reduction of Nutrient Losses to Surface Waters and Groundwaters 

Full list

Selected publications

Ulén, B., Bechmann, N., Fölster. J.,  Jarvie, H. & Tunney, H.  2007. Agriculture as a phosphorus source for eutrophication in the north-west European countries, Norway, Sweden, United Kingdom and Ireland: A review. Soil Use Manage. 23, Suppl.1, 5-18.

Ulén, B.  & Johansson G. 2009. Long-term nutrient leaching from a Swedish arable field with intensified crop production against a background of climate change. Acta  Agriculturæ Scandinavica sect. B. 59, 157-169.

Ulén, B., Aronsson, H., Bechmann, M., Krogstad, T., Øygarden, L., Stenberg, M., 2010. Soil tillage measures against phosphorus erosion and leaching and potential side effects – a Scandinavian review. Soil Use and Management (in press).

More publications