Lars Bergström

Division Water Quality Managemen   Professor Head of section Water Quality Research E-mail: lars.bergstrom@mv.slu.se Phone: +46 (0)18-67 24 63

Main research interests

• Transport and reactions of chemicals and nutrients in field soils
• Development of experimental techniques to estimate the surface water and groundwater pollution potential of pesticides and nutrients
• Evaluation of models to assess the impact chemical movement in soils
• Effects of soil and water management practices on water quality

Ongoing projects

• Leaching of 14C-labeled glyphosate in sand and clay lysimeters. Research project funded by the Swedish Board of Agriculture (SJV)
• Phosphorus losses from agricultural soils to water – conditions, flows and mitigation strategies. Funded by the Swedish Environmental Protection Board (SEPA).
• Phosphorus losses from agricultural soils – what can we do to minimize the problem? Funded by SJV.

A selection of recent publications

Kirchmann, H., Bergström, L., Kätterer, T., Mattsson, L. & Gesslein, S. 2007. Comparison of long-term organic and conventional crop-livestock systems – dynamics of soil carbon and yield, nutrient use efficiency, and N leaching. Agron. J. (in press).

Aronsson, H, Torstensson, G.. & Bergström, L. 2007. Leaching and crop uptake of N, P, and K in a clay soil with organic and conventional cropping systems. Soil Use Manage. 23:71-81.

Bergström, L.F. & Djodjic, F. 2006. Soil as an important interface between agricultural activities and groundwater – leaching of nutrients and pesticides in the vadose zone. In: Froussard, E., Blum, W.E.H. & Warkentin, B.P. (eds). Function of Soils for Human Societies and the Environment. Geolgical Society, London, Special Publications 266, pp. 45-52.

Bergström, L. & Kirchmann, H. 2006. Leaching and crop uptake of N and P from pig slurry as affected by different applications rates. J. Environ. Qual. 35:1803-1811.

Torstensson, G., Aronsson, H. & Bergström, L. 2006. Nutrient use efficiencies and leaching of organic and conventional cropping systems in Sweden. Agronomy J. 98:603-615.

Djodjic, F. & Bergström, L. 2005. Conditional phosphorus index as an educational tool for risk assessments and phosphorus management. Ambio 34:293-297.

Dahlin, S., Kirchmann, H., Kätterer, T., Gunnarsson, S. & Bergström, L. 2005. Possibilities for improving nitrogen use from organic materials in agricultural cropping systems. Ambio 34:285-292.

Bergström, L. & Goulding, K. 2005. Perspectives and challenges in the future use of plant nutrients in tilled and mixed agricultural systems. Ambio 34:280-284.

Andersson, R., Algers, B., Bergström, L., Lundström, K., Nybrandt, T. & Sjödén, P.-O.. 2005. Food 21 – a research program looking for measures and tools to increase food chain sustainability. Ambio 34:272-279.

Shirmohammadi, A., Djodjic, F. & Bergström, L. 2005. Scaling issues in sustainable management of nutrient losses. Soil Use Manage. 21:160-166.

McNeill, A.M., Eriksen, J. Bergström, L., Smith, K.A., Marstorp, H., Kirchmann, H. & Nilsson, I. 2005. Nitrogen and sulphur management: challenges for organic sources in temeperate agricultural systems. Soil Use Manage. 21:82-93.

Djodjic, F., Bergström, L. & Grant, C. 2005. Critical aspects of phosphorus management. Soil Use Manage. 21:94-100.

Sims, J.T., Bergström, L., Bowman, B.T. & Oenema, O. 2005. Sustainable nutrient management for intensive animal production. Soil Use Manage. 21:141-151.

Bergström, L., Bowman, B.T. & Sims, T. 2005. Definition of sustainable and non-sustainable issues in nutrient mangament of modern agriculture. Soil Use Manage. 21:76-81.

Djodjic, F. & Bergström, L. 2005. Phosphorus losses from arable fields in Sweden – effects of field-specific factors and long-term trends. Environ. Monitor. Assess. 102:103-117.

Shirmohammadi, A., Montas, H., Bergström, L., Sadeghi, A. & Bosch, D. 2004. Preferential flow: identification and quantification. In: Alvarez-Benedi, J. & Munos-Carpena, R. (eds). Soil-Water-Solute Process Characterization – An Integrated Approach. CRC Press, Boca Raton, FL, pp. 289-308.

Bergström, L. 2004. The impact of food production on soils and ground water resources. J Food Sci. 69:181-184.

Bergström, L.F. & Kirchmann, H. 2004. Leaching of total nitrogen from 15-N-labeled green manures and ¹⁵NH₄¹⁵NO₃. J. Environ. Qual. 33:1786-1792.

Djodjic. F., Börling, K. & Bergström, L. 2004. Phosphorus leaching in relation to soil type and soil phosphorus content. J. Environ. Qual. 33:678-684.