Matt Ruark

  • Title: Assistant Professor
  • Specialty: Nutrient use efficiency and edge-of-field contaminant reduction losses
  • Education:

    B.S. Environmental Science, 1999, University of Minnesota
    M.S. Soil Science, 2002, University of Minnesota
    Ph.D. Agronomy, 2006, Purdue University
    Postdoctoral Researcher, University of California-Davis, 2006-2008

  • Address: Room 158 Soils
    1525 Observatory Drive
    Madison, WI 53706
  • Email:
  • Phone: 608.263.2889
  • Fax: 608.265.2595
  • Research Overview:

    Teaching and Research
    My overall goals of my research and extension programs are to: (1) improve nutrient use efficiency in grain, vegetable, organic, and biofuel production systems and (2) reduce edge-of-field losses of contaminants from agricultural production systems.

    Current research projects:
    Grain crops

    Slow-release nitrogen fertilizer use in no-till continuous corn systems
    Nitrogen use efficiency in long-term, conventional tillage, continuous corn production systems

    Slow-release nitrogen, urease inhibitor, and nitrification inhibitor fertilizer use in potato production systems
    Nitrogen leaching losses in potato production systems on sandy soils
    Nitrogen use efficiency of improved sweet corn hybrids
    Interaction between sweet corn hybrid, planting density, and nitrogen fertilizer application rate

    Cover crop species and timing of plow-under in a diverse organic crop rotation
    Performance of leguminous cover crops with and without oat companion crop

    Nitrogen use efficiency in continous corn rotation systems with annual removal of stover
    Nitrogen management of switchgrass in Wisconsin
    Water Quality

    Nitrogen, phosphorus, and carbon losses from tile drained cropping systems in Wisconsin


    Ruark, M.D., B.A. Linquist, C. Van Kessel, J. Six, C.A. Greer, R.G. Mutters, and J.E. Hill. 2009. Seasonal losses of dissolved organic carbon and total dissolved solids from rice production systems in northern California. Accepted – J. Environ. Qual.

    Linquist, B.A., J.E. Hill, R.G. Mutters, C.A. Greer, C. Hartley, M.D. Ruark, and C. van Kessel. 2009. Assessing the necessity of surface applied pre-plant nitrogen fertilizer in rice systems. Accepted – Agron. J.

    Ruark, M.D., S.M. Brouder, and R.F. Turco. 2009. Dissolved organic carbon losses from tile drained agroecosystems. J. Environ. Qual. 38:1205-1215.

    Ruark, M.D., J.A. Lamb, and R.W. Rehm. 2006. Phosphorus runoff from sugarbeet production systems as affected by tillage and phosphorus fertilizer placement. J. Sugar Beet Res. 43:65-84.