Contact Information:

Research Areas:
Determine the impacts of land use on the kinetics of P transport in streams and ditches. Evaluate how voluntary implementation of best management practices for agriculture impacts nutrient loading to surface water. Assess the impacts of agricultural management on greenhouse gas emissions from soils and manure. Determine how freeze/thaw cycles affect soil erodibility.  Evaluate the effects of land-use change and urbanization on surface water quality.

Most Significant Publications:
Smith, D.R., E.A. Warnemuende, B.E. Haggard, and C. Huang.  2006.  Dredging of drainage ditches increases short-term transport of soluble phosphorus transport.  J. Environ. Qual.  35: [In-Press]

Smith, D.R., P.A. Moore, Jr., B.E. Haggard, C.V. Maxwell, T.C. Daniel, K. VanDevander and M.E. Davis. 2004. Effect of aluminum chloride and dietary phytase on relative ammonia losses from swine manure. J. Anim. Sci. 82:605-611.

Smith, D.R., P.A. Moore, Jr., D.M. Miles, B.E. Haggard, and T.C. Daniel. 2004. Decreasing phosphorus runoff losses from land-applied poultry litter with dietary modifications and alum addition. J. Environ. Qual. 33:2210-2216.

Smith, D.R. and P.A. Moore, Jr. 2003. Surface water quality protection for concentrated animal feeding operations, In B.A. Stewart and T. Howell (eds.) Encyclopedia of Water Science. Marcel Dekker, Inc. Publ., N.Y. pp. 965-968

Professional Experience:
Research Soil Scientist, National Soil Erosion Research Laboratory, USDA – Agricultural Research Service 2002-Present
Adjunct Assistant Professor, Department of Agronomy, Purdue University, 2002-Present
Senior Graduate Research Assistant, University of Arkansas, 1999-2002
Graduate Research Assistant, Texas A&M University-Commerce, 1997-1999

Awards and Honors:
Texas A&M University – Commerce Alumni Ambassador, 2002
Who’s Who Among American College Students, 1999

Education:
B.S., Animal Science, Texas A&M University - Commerce, Commerce, TX, 1997
M.S., Agriculture, Texas A&M University – Commerce, Commerce, TX, 1999
Ph.D., Soil Science, University of Arkansas, Fayetteville, AR, 2002

Date joined staff: September 2002