Joanne Chee-Sanford, Environmental Microbiologist, USDA-ARS Adjunct Professor, Department of Natural Resources and Environmental Sciences, University of Illinois Assistant Professor, Department of Crop Sciences, University of Illinois Urbana, Illinois 61801 Phone: (217)265-0959 e-mail: Joanne.CheeSanford@ars.usda.gov

• B.S., Univ. of Washington, Microbiology, 1984
• Ph.D, Michigan State Univ., Microbiology and Environmental Toxicology, 1996

Objective
Our research is examining available weed management strategies for key weed species in vegetable and row crops in the midwest area. The goal is to develop fundamental knowledge of weed biology/microbiology, and develop ecology to enhance environmentally safe weed control. Additionally, new directions for biologically based management of these weed species will be proposed, in close collaboration with key customers and stakeholders, universities and extension laboratories. A regional approach to solving these problems collaboratively will be developed.

Approach
The approach of this research unit is to study critical physiological/biochemical, environmental, and ecological phenomena of economically important weeds in vegetable and row crop systems. These include factors important to weeds, weed seeds, microbial communities and function, and their relationship to the environment. With this knowledge, improved weed management systems can be developed that integrate and utilize biological control weed sensors, reduced herbicide inputs, reduced tillage, crop rotations, and enhancement/reduction of factors affecting microbial-mediated weed seed bank depletion or other non-chemical management strategies.

Publications

Changes in Tnt-Degrading Microbial Communities in Response to Reduced Carbon Loading in Anaerobic Fluidized Bed Reactors

Chee-Sanford, J.C., R. I. Aminov, I. J. Krapac, N. Garrigues-Jeanjean, and R. I. Mackie. 2001. Occurrence and diversity of tetracycline resistance genes in lagoons and groundwater underlying two swine production facilities. Appl. Environ. Microbiol. 67:1494.

Kirisits, M. J., V. L. Snoeyink, J. C. Chee-Sanford, B. J. Daugherty, J. C. Brown, and L. M. Raskin. 2001. Effect of column design and operating conditions on bromate removal efficiency in BAC filters. J. Amer. Waterworks Assoc.

Kirisits, M. J., V. L. Snoeyink, H. Inan, J. C. Chee-Sanford, L. M. Raskin, and J. C. Brown. 2001. Water quality factors affecting bromate reduction in biologically active carbon filters. Water Research, 35:891.

Chee-Sanford, J. C., B. Y. Kim, and R. I. Mackie. 2001. Anaerobic degradation of nitrocellulose under sulfate-reducing and methanogenic conditions. Intl. Biodet. Biodegrad.

Rockne, K. C., J. C. Chee-Sanford (corresponding author), R. A. Sanford, B. Hedlund, J. T. Staley, and S. E. Strand. 2000. Anaerobic naphthalene degradation by microbial pure cultures under nitrate-reducing conditions. Appl. Environ. Microbiol. 66:1595.

Chee-Sanford, J. C., J. W. Frost, M. R. Fries, J.-Z. Zhou, and J. M. Tiedje. 1996. Evidence for acetyl-CoA and cinnamoyl-CoA in the anaerobic toluene mineralization pathway in Azoarcus tolulyticus strain Tol-4. Appl. Environ. Microbiol. 62:974-978.