Research

My research efforts are aimed at the development of management practices that limit the economic impact of agronomic field crop diseases. To do this, research on the biology of plant pathogens and their crop hosts and how management practices affect both the plant pathogen and the crop host is crucial.

Some of my current research projects include:

• Evaluation of foliar fungicides for their control of diseases and effects on corn, soybean, and winter wheat.
• Development of baseline QoI fungicide sensitivity levels of corn and soybean foliar fungal pathogens and initiation of a fungicide resistance monitoring program.
• Evaluation of seed treatment fungicides for their control of soilborne diseases of corn, soybean, and wheat.

Extension

My extension program emphasizes outreach education of the biology and management of agronomic field crop diseases, properties of fungicides, and fungicide resistance management. To extend these educational programs to stakeholders, I utilize a variety of methods which include face-to-face presentations, two-way video presentations, websites, newsletters, Extension bulletins and factsheets, trade magazines, and the popular press.

Some of my current extension programs include:

• Soybean rust sentinel plot coordinator for Illinois: I provide weekly commentary on current disease scouting and management recommendations for soybean rust and other soybean diseases as part of the Pest Information Platform for Extension and Education (PIPE) located at: http://www.sbrusa.net/
• Fusarium head blight risk assessment program: I provide commentary on the risk and management of Fusarium head blight (scab) on Illinois winter wheat on the Wheat Fusarium Head Blight Prediction Center website at: http://www.wheatscab.psu.edu/

Publications (peer-reviewed journal articles)

Bradley, C. A., Chesrown, C. D., and Hofman, V. L. 2007. Evaluation of foliar fungicide application methods on soybean. Canadian Journal of Plant Pathology (In press).

Khan, M. F. R., Richards, G., Khan, J., Harikrishnan, R., Nelson, R., and Bradley, C. A. 2007. Effect of adjuvants on the performance of pyraclostrobin for controlling Cercospora leaf spot on sugar beet. Journal of Sugar Beet Research (In press).

Bradley, C. A., Halley, S., and Henson, R. A. 2007. Evaluation of fungicide seed treatments on flax cultivars differing in seed color. Industrial Crops and Products 25:301-304.

Bradley, C. A., Burlakoti, P., Nelson, R. S., and Khan, M. F. R. 2007. First report of the perfect stage of powdery mildew of sugar beet in North Dakota caused by Erysiphe polygoni. Plant Disease 91:470.

del Rio, L. E., Bradley, C. A., Henson, R. A., Endres, G. J., Hanson, B. K., McKay, K., Halvorson, M., Porter, P. M., LeGare, D. G., and Lamey, H. A. 2007. Impact of Sclerotinia stem rot on yield of canola. Plant Disease 91:191-194.

Harikrishnan, R., del Rio, L. E., Lamppa, R. S., Padilla, R., Zabala, F., Gregoire, M., and Bradley, C. A. 2006. Occurrence of foliar fungal and bacterial diseases of dry bean in North Dakota. Online. Plant Health Progress doi:10.1094/PHP-2006-0915-01-RS.

Bradley, C. A., Lamey, H. A., Endres, G. J., Henson, R. A., McKay, K., Halvorson, M., LeGare, D. G., and Porter, P. M. 2006. Efficacy of fungicides for control of Sclerotinia stem rot of canola. Plant Disease 90:1129-1134.

Bradley, C. A. and Khan, M. F. R. 2006. Evaluation of dichloropropene fumigant and benzothiadiazole seed treatment on sugar beet in a rhizomania infested field. Journal of Sugar Beet Research 43:27-34.

Bradley, C. A., Henson, R. A., Porter, P. M., LeGare, D. G., del Rio, L. E., and Khot, S. D. 2006. Response of canola cultivars to Sclerotinia sclerotiorum in controlled and field environments. Plant Disease 90:215-219.

Gulya, T. J., Gesch, R. W., Bradley, C. A., del Rio, L. E., and Johnson, B. L. 2006. First report of Sclerotinia sclerotiorum infection on Cuphea. Plant Disease 90:1554.

Bradley, C. A. and Li, S. 2006. First report of northern stem canker of soybean caused by Diaporthe phaseolorum var. caulivora in North Dakota. Plant Disease 90:687.

Bradley, C. A., Hartman, G. L., Mueller, D. S., Hoffman, D. D., Nickell, C. D., and Pedersen, W. L. 2005. Genetic analysis of partial resistance to Rhizoctonia solani in the soybean cultivar 'Savoy'. Canadian Journal of Plant Pathology 27:137-142.

Bradley, C. A., Parks, P. S., Chen, Y., and Fernando, W. G. D. 2005. First report of Pathogenicity Groups 3 and 4 of Leptosphaeria maculans on canola in North Dakota. Plant Disease 89:776.

del Rio, L. E., Bradley, C. A., and Johnson, B. L. 2005. First report of white mold caused by Sclerotinia sclerotiorum on echium (Echium vulgare). Plant Disease 89:684.

Windels, C. E., Brantner, J. R., Bradley, C. A., and Khan, M. F. R. 2005. First report of Fusarium oxysporum causing yellows on sugar beet in the Red River Valley of Minnesota and North Dakota. Plant Disease 89:341.

Bradley, C. A., del Rio, L. E., Chesrown, C. D., and Johnson, B. L. 2005. First report of soft rot, caused by Sclerotinia sclerotiorum, on borage in North Dakota. Plant Disease 89:208.

Halley, S., Bradley, C. A., Lukach, J. R., McMullen, M., Knodel, J. J., Endres, G. J., and Gregoire, T. 2004. Distribution and severity of pasmo on flax in North Dakota and evaluation of fungicides and cultivars for management. Plant Disease 88:1123-1126.

Mueller, D. S., Bradley, C. A., Grau, C. R., Gaska, J. M., Kurle, J. E., and Pedersen, W. L. 2004. Application of thiophanate-methyl at different host growth stages for control of Sclerotinia stem rot in soybean. Crop Protection 23:983-988.

Strausbaugh, C. A., Bradley, C. A., Koehn, A. C., and Forster, R. L. 2004. Survey of root diseases of wheat and barley in southeastern Idaho. Canadian Journal of Plant Pathology 26:167-176.

Bradley, C. A., Biller, C. R., and Nelson, B. D. 2004. First report of soybean cyst nematode (Heterodera glycines) on soybean in North Dakota. Plant Disease 88:1287.

Bradley, C. A., Noel, G. R., Grau, C. R., Gaska, J. M., Kurtzweil, N. C., MacGuidwin, A. E., Hartman, G. L., Wax, L. M., and Pedersen, W. L. 2003. Impact of herbicides on Heterodera glycines susceptible and resistant soybean cultivars. Journal of Nematology 35:88-97.

Pedersen, W. L., Kline, J. D., Bradley, C. A., and Mueller, D. S. 2003. Influence of metalaxyl fungicide seed treatment on severity of rootworm (Diabrotica spp.) damage to corn (Zea mays) under no-tillage conditions. Crop Protection 22:647-652.

del Rio, L. E., Bradley, C. A., and Lamppa, R. S. 2003. First report of white leaf spot of dry bean caused by Pseudocercosporella albida in North America. Plant Disease 87:1537.

Bradley, C. A. and del Rio, L. E. 2003. First report of charcoal rot on soybean caused by Macrophomina phaseolina in North Dakota. Plant Disease 87:601.

Bradley, C. A., del Rio, L. E., and Johnson, B. L. 2003. First report of Sclerotinia sclerotiorum on niger (Guizotia abyssinica). Plant Disease 87:602.

Bradley, C. A., Hartman, G. L., Wax, L. M., and Pedersen, W. L. 2002. Quality of harvested seed associated with soybean cultivars and herbicides under weed-free conditions. Plant Disease 86:1036-1042.

Bradley, C. A., Hartman, G. L., Wax, L. M., and Pedersen, W. L. 2002. Influence of herbicides on Rhizoctonia root and hypocotyl rot of soybean. Crop Protection 21:679-687.

Mueller, D. S., Dorrance, A. E., Derksen, R. C., Ozkan, E., Kurle, J. E., Grau, C. R., Gaska, J. M., Hartman, G. L., Bradley, C. A., and Pedersen W. L. 2002. Efficacy of fungicides on Sclerotinia sclerotiorum and their potential for control of Sclerotinia stem rot on soybean. Plant Disease 86:26-31.

Bradley, C. A., Hartman, G. L., Nelson, R. L., Mueller, D. S., and Pedersen, W. L. 2001. Response of ancestral soybean lines and commercial cultivars to Rhizoctonia root and hypocotyl rot. Plant Disease 85:1091-1095.

Bradley, C. A., Wax, L. M., Ebelhar, S. A., Bollero, G. A., and Pedersen, W. L. 2001. The effect of fungicide seed protectants, seeding rates, and reduced rates of herbicides on no-till soybean. Crop Protection 20:615-622.

Li, S., Bradley, C. A., Hartman, G. L., and Pedersen, W. L. 2001. First report of Phomopsis longicolla from velvetleaf causing stem lesions on inoculated soybean and velvetleaf plants. Plant Disease 85:1031.

Brief Biographical Sketch

Education:

• Ph.D., University of Illinois at Urbana-Champaign, 2001
• M.S., University of Illinois at Urbana-Champaign, 1999
• B.S., Southern Illinois University at Carbondale, 1995

Academic Experience:

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