University of Minnesota
College of Food, Agricultural and Natural Resource Sciences
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Department of Soil, Water, and Climate

William Koskinen | 612-625-4276

B.S. 1968 San Diego State University Chemistry
M.S. 1974 San Diego State University Soil Chemistry/Biochemistry
Ph.D. 1980 Washington State University Soil Chemistry/Biochemistry

Research focuses on determination and quantification of the mechanisms and factors controlling the degradation, movement, and activity of pesticides and their metabolites in soil; and to use this knowledge to reduce pesticide use by increasing herbicide efficacy in agricultural production systems, and to decrease the risk of ground water contamination.

Graduate Programs:
Soil Science
Land and Atmospheric Science

Selected Publications:
Regitano, J. B. and W. C. Koskinen. 2008. Characterization of nicosulfuron availability in aged soils. J. Agric. Food Chem. 56:5801-5806.

Accinelli, C., W. C. Koskinen, J. M. Becker, and M. J. Sadowsky. 2008. Mineralization of the Bacillus thuringiensis Cry1Ac endotoxin in Soil. J. Agric. Food Chem. 56:1025-1028.

Accinelli, C., W. C. Koskinen, J. M. Becker, and M. J. Sadowsky. 2007.  Environmental fate of two sulfonamide antimicrobial agents in soil. J. Agric. Food Chem. 55:2677-2682.

Marek, L. J., and W. C. Koskinen. 2007. Multiresidue analysis of seven anticoagulant rodenticides by high-performance liquid chromatography/electrospray/mass spectrometry. J. Agric. Food Chem. 55:571-576.

Sadowsky, M. J., W. C. Koskinen, J. Seebinger, B. L. Barber, and E. Kandeler. 2006. Automated robotic assay of alkaline phosphomonoesterase activity in soils. Soil Sci. Soc. Am. J. 70:378-381.

Koskinen, W. C., M. J. Calderon, P. J. Rice, and J. Cornejo. 2006. Sorption-desorption of flucarbazone and propoxycarbazone and their benzenesulfonamide and triazolinone metabolites in two soils. Pest Manage. Sci. 62:598-602.

Cruz-Guzman, M., R. Celis, M. C. Hermosin, W. C. Koskinen, and J. Cornejo. 2005. Adsorption of pesticides from water by functionalized organobentonites. J. Agric. Food Chem. 53:7502-7511.

Accinelli, C., W. C. Koskinen, J. D. Seebinger, A. Vicari, and M. J. Sadowsky. 2005. Effects of incorporated corn residues on glyphosate mineralization and sorption in soil. J. Agric. Food Chem. 53:4110-4117.

Carrizosa, M. J., W. C. Koskinen, and M. C. Hermosin. 2004. Interactions of acidic herbicides bentazon and dicamba with organoclays. Soil Sci. Soc. Amer. J. 68:1863-1866.

Cecchi, A. M., W. C. Koskinen, H. H. Cheng, and K Haider. 2004. Sorption-desorption of phenolic acids as affected by soil properties. Biol. Fert. Soils 39:235-304.