Contact Information
Phone: 608-890-0070
Fax: 608-890-0076
Email: mark.powell@ars.usda.gov
Office: Dairy Forage Research Center, 1925 Linden Drive
Program Affiliations
Department of Soil Science
Research Soil Scientist, United States Department of Agriculture-Agriculture Research Service and U.S. Dairy Forage Research Center
Education
BS (with honors) Plant Sciences, 1979, Clemson University
MPS International Agriculture & Rural Development, 1982, Cornell University
PhD Agronomy, 1989, Texas A&M University
Teaching and Research Overview
Dairy Forage Research Center Website
Dr. Powell is an Associate-Professor in the Department of Soil Science. He co-manages USDFRC project "Improving dairy forage and manure management to reduce environmental risk." He utilizes crop, soil, animal and social sciences in an agro-ecological approach to understand on-farm nutrient cycling and develop integrated farming systems that sustain natural resources and profitable crop-livestock production. The scientific information collected by his research has been used to (1) develop recommendations about how to integrate dietary, livestock management, and manure handling practices into comprehensive nutrient management programs, and (2) identify management practices that bring individual farms into better nutrient balance while maintaining farm productivity and profitability. The decision-support tools, guidelines, manuals, maps and other products derived from Dr. Powell's research are aimed at three key audiences: (1) farmers and educators involved in nutrient use training, (2) decision-makers working to develop guidelines and regulations for improving agricultural nutrient management, and (3) university students, many of whom will be researchers, conservation program staff, or consultants assisting farmers with nutrient management in the future.
Dr. Powell has led numerous technical reviews and project evaluations for the World Bank, the US Agency for International Development (USAID), the United Nations Environment Programme and other organizations in in sub-Saharan Africa, Asia, Australia and the US.
Selected Publications
Powell, J.M., Russelle, M.P., and Martin, N.P. 2008. Dairy Industry Trends and the Environment in the USA. In: Gerber, P., C. de Haan, J. Dijkman, H.A. Mooney, S. Tarawali, eds. Livestock in a Changing Landscape: Regional insights. United Nations Food and Agricultural Organization, Island Press, Washington, D.C. (In Press).
Powell, J.M., Li, Y., Wu, Z., Broderick, G.A., and Holmes, B.J. 2008. Rapid assessment of feed and manure management on confinement dairy farms. Nutrient Cycling in Agroecosystems 82:107-115.
Powell, J.M., Misselbrook, T.H., and Casler, M.D. 2008. Season and bedding impact ammonia emissions from tie-stall dairy barns. Journal of Environmental Quality 37:7-15.
Powell, J.M., Broderick, G.A., and Misselbrook, T.H. 2008. Seasonal diet impacts on ammonia emissions from tie-stall dairy barns. Journal of Dairy Science 91:857-869.
Gourley, C.J.P., Powell, J.M., Dougherty, W.J., and Weaver, D.M. 2007. Nutrient budgeting as an approach for improving nutrient management on Australian dairy farms. Australian Journal of Experimental Agriculture. Vol 47 (9):1064-1074.
Powell, J.M., Jackson-Smith, D.B., McCrory, D.F., Saam, H and M. Mariola. 2007. Nutrient management behavior on Wisconsin Dairy farms. Agron. J. 99:211-219.
Wu, Z. and Powell, J.M. Dairy manure type, application rate and frequency impact plants and soils. 2007. Soil Science Society of America Journal 71:1306-1313.
Powell, J.M., M.A. Wattiaux, G.A. Broderick, V.R. Moreira, and M.D. Casler. 2006. Dairy diet impacts on fecal properties and nitrogen cycling in soils. Science Society of America Journal 70:786-794.
Powell, J. Mark, Tom Misselbrook, and Glen Broderick. 2006. Abating ammonia emissions from dairy barns through feed, herd and bedding management. pp 1006-1010. In. Proceeding of Workshop on Agricultural Air Quality: State of Science. Bolger Conference Center, Potomac, Maryland. Dept. Commun. Services. North Carolina State.
Powell, J.M., K.F. Knowlton, M.P. Russelle and M.D. Hanigan. 2006. Manure nitrogen transformation in air, soil and crops on dairy farms. Abstract 623. Symposium Proceedings. Transforming Forages to Improve Nitrogen Use by dairy Cows and Decrease Nitrogen Emissions. Dairy Science Society of America Annual Meetings, July 9-13, 2006. Minneapolis, MN.
Satter, L.D., Klopfenstein, T.J., Erickson, G.E., and Powell, J.M. 2005. Phosphorus and dairy-beef nutrition. P. 587-606. In A.N. Sharply et al., (ed.). Phosphorus Agriculture and the Environment. ASA-CSSA-SSSA Monograph N. 46. ASA-CSSA-SSSA, Madison, Wisconsin.
Powell, J.M. 2005. Contributions to society: manure-fertilizer/fuel, developed countries. Encycl. Anim. Sci. (1):254-257.
Powell, J.M. and T. H. Misselbrook. 2005. Diet effects on dairy manure nitrogen excretion and cycling. p. 73. In S.C. Jarvis, P.J. Murray and J.A. Roker (eds.) Optimization of nutrient cycling and soil quality for sustainable grasslands. Wageningen Academic Publishers, The Netherlands.
Powell, J.M., McCrory, D.F., Jackson-Smith, D.B., and Saam, H. 2005. Manure collection and distribution on Wisconsin dairy farms. J. Environ. Qual. 34:2036-2044.
Powell, J.M. 2005. Dairy herd management impacts on manure nitrogen cycling. In Proc. of the 2005 Wisconsin Fertilizer, Aglime & Pest Management Conference, January 18-20, 2005, Madison, WI. p. 271-273.
Entz, M.H., Bellotti, W.D., Powell, J.M., Angadi, S.V., Chen, W., Ominski, K.H., and Boelt, B. 2005. Evolution of integrated crop-livestock production systems. p. 137-148. In D.A. McGilloway (ed.) Grassland: A Global Resource. Wageningen Academic Publ., The Netherlands.
Misselbrook, T.H. and Powell, J.M. 2005. Influence of bedding material on ammonia emissions from cattle excreta. J. Dairy Sc. 88:4304-4312.
Misselbrook, T. H., Powell, J. M., Broderick, G. A., and Grabber, J.H. 2005. Dietary manipulation in dairy cattle: Laboratory experiments to assess the influence on ammonia emissions. J. Dairy Sci. 88: 1765-1777.
Muñoz, G.R., Kelling, K.A, Powell, J.M., and P.E. Speth. 2004. Comparison of estimates of 1st year dairy manure N availability or recovery using 15N and other techniques. J. Environ. Qual. 33:719-727.
Powell, J.M., Wu, Z., Kelling, K.A., Cusick, P. and Muñoz, G.R. 2004. Differential 15N labeling of dairy manure components for nitrogen cycling studies. Agron. J. 96:433-441.
Powell, J.M., Pearson, R.A., Hiernaux, P.H. 2004. Crop-livestock interactions in the West African drylands. Agron. J. 96:469-483.
Awards and Honors
Elected, Board of Directors, American Society of Agronomy, to represent Div. A-6, International Agronomy (2009-2011)
Elected, Chair, American Society of Agronomy, Div. A-6, International Agronomy (2007)
Invited Member, Technical Advisory Committee of USDA-CSREES National Learning Center for Animal Agricultural Water Quality Issues (2006-present)
Invited Member, Scientific and Technical Advisory Panel (STAP), United Nations Food and Agriculture Organization (2005-present)
Led team nominated for USDA-ARS National Technology Transfer Award for "... unusually effective outreach efforts to convince dairy producers, their consultants and the feed industry that phosphorus content of dairy diets should be reduced" (2003)
Team Excellence Award, NE Regional Association of State Agricultural Experiment Station Directors to the NE-132 Technical Committee "Environmental and Economic Impacts of Nutrient Flows in Dairy Forage Systems" (2001) |
