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David Claypool

Department of Plant Sciences

David Claypool
Contact Information:

Office: 307-766-3995
Fax:  307-766-5549

Master Technician


I currently work with Dr. Andrew Kniss in developing sustainable weed management programs in agronomic crops, especially sugarbeet, winter wheat, corn, and dry beans.  We conduct as many as 45 field and greenhouse trials annually.  I handle the logistical aspects of the program, manage data, write reports and grant proposals, present results at conferences, as well as supervising and training students.  I also provide GPS and GIS support for the department.

Prior to working in weed science, I worked in crop physiology management, precision agriculture, cropping systems, and plant breeding.  I initiated and conducted a project of GPS mapping and development of GIS databases and maps for record-keeping and management of Wyoming agricultural research and extension centers.  This included mapping farm infrastructure and annual research locations, soil grid sampling, apparent soil electrical conductivity mapping, and obtained aerial imagery through the AEROCam program.  Software development is currently under construction by the WyGISC staff to simplify access to the data.

Before coming to Wyoming, I worked in Ohio, North Dakota, and South Dakota in soil fertility, crop rotations, variety testing, and plant breeding research.

Professional Certifications and Memberships

  • Certified Professional Agronomist, Soil Scientist, and Crop Adviser
  • Western Society of Crop Science
  • Western Society of Weed Science
  • Commercial Pesticide Applicator (WY)

Selected  Publications and Reports 

Kniss, A.R., D.A. Claypool, R. Rapp, J. Unverzagt, L. Lorent, and C. Coburn.  2013.  Weed Research Report– 2012.  Department of Plant Sciences, University of Wyoming, Laramie.  150 pages.

Walsh, M.J., R.W. Groose, A.K. Obour, D.A. Claypool, R.H. Delaney, and J.M. Krall. 2013. Seed persistence in soil of five medic cultivars in southeastern Wyoming. Crop Science 53:1-5.

Sivanpillai, R., Claypool, D.A., Siloju, R. 2012. Relating AEROCam-derived NDVI to apparent soil electrical conductivity (ECa) for corn fields in Wyoming, USA.  Remote Sensing Letters 3(1):49-56.

Zhang, X., Kim, H., Streeter, C., Claypool D.A., Sivanpillai, R., Seelan, S. 2011. Near real-time high-resolution airborne camera, AEROCam, for Precision Agriculture. GeoCarto International 26(7):537–551.

Claypool, D.A. 2010.  Progress Report: Development of GPS maps, GIS databases, soils baseline data, and aerial imagery for the James C. Hageman Sustainable Agriculture Research and Extension Center.  Submitted to: the University of Wyoming Agricultural Experiment Station and Department of Plant Sciences. 7 Apr.  36 pages.

Farahani, H.J., D.A. Claypool, R.P. Belden, L.C. Munn, and R.A. Flynn. 2008. Soil ECa mapping helps establish research plots at a new research and extension center. In: B.J. Allred et al., editors, Handbook of Agricultural Geophysics. CRC Press, New York, NY.  p. 281-286.


Sivanpillai, R., Claypool, D.A., Ellison, M., Sbatella, G.M. 2008. High resolution, no-cost AEROCam data promotes undergraduate remote sensing research in Wyoming. Photogrammetric Engineering & Remote Sensing 74(4):385-389.


Fleming, M.R, D.A. Claypool, S.D. Miller, and L.J. Held.  2006.  Precision Application of Herbicide for Control of Skeletonleaf Bursage in Winter Wheat.  Journal of the American Society of Farm Managers and Rural Appraisers. 69 (1):131-135.

Claypool, D. H. Farahani, K. Belden, L. Munn.  2004.  Modern tools help establish a new agricultural research and extension center. Reflections. University of Wyoming College of Agriculture. p. 55-56.


Claypool, D., S. Miller, L. Held, R. Delaney. 2003. Crop sprayer offers applications for precision agriculture research, teaching, and extension. Reflections. University of Wyoming College of Agriculture. p. 32-33.


Haag, A.A., L.J. Held, J.M. Krall, R. H. Delaney, S.D. Miller, and D. Claypool.  2003.  Replacing summer fallow with a summer grazed legume crop in rotation with wheat or wheat-sunflower-milletJournal of the American Society of Farm Managers and Rural Appraisers. 66 (1):26-36.


Krall, J., R. Delaney, A. Haag, L. Held, and D. Claypool. 2002. Austrian winter peas for dryland grazing with lambs. Cooperative Extension Service B-1128. University of Wyoming, Laramie, WY.


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