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United States Department of Agriculture

Agricultural Research Service

Gregory W. McCarty

Soil Scientist

photo of Greg McCarty Gregory W. McCarty, Ph.D.
Research Soil Scientist
USDA-ARS Hydrology and Remote Sensing Laboratory
Bldg. 007, Rm. 104, BARC-West
Beltsville, MD 20705-2350 USA
Voice: (301) 504-7401
Fax: (301) 504-8931
Greg.McCarty@ars.usda.gov


Research Interests:(click here to see a list of current research projects)

  • Assessing the effectiveness of conservation practices at field landscape and watershed scales in the Choptank watershed.
  • Working to improve implementation of winter cover crop for water quality protection in the Chesapeake Bay watershed by use of remote sensing to detect cover crop performance on working landscapes.
  • Working to improve assessment of ecosystem services provided by wetlands in agricultural ecosystems and toward development of adaptive management tools for better wetland management on working landscapes.
  • Improving the ability to measure carbon sequestration in agricultural ecosystems and to gain better understanding of the impact of soil movement on carbon dynamics within agricultural landscapes.
  • Quantifying changes in soil carbon storage under plow tillage and no tillage management and assessing emissions of greenhouse gases under these management systems.
  • Developing improved remote sensing tools for detecting crop residue burning on croplands and for improved assessment of black carbon emissions in northern latitudes that lead to increased snow melt in the Arctic.


Education:

  • 1982 B.S. (Agronomy) Department of Agronomy, Iowa State University, Ames IA.
  • 1985 M.S. (Soil Fertility) Department of Agronomy, Iowa State University, Ames IA.
  • 1989 Ph.D. (Soil Microbiology) Department of Agronomy, Iowa State University, Ames IA.


Professional Experience:

  • 1982 - 1985: Research Assistant, Dept. of Agronomy, Iowa State University.
  • 1985 - 1990: USDA Fellow, Dept. of Agronomy, Iowa State University.
  • 1990 - 1992: Postdoctoral Research Associate, Dept. of Agronomy, Iowa State University.
  • 1992 - 2000: Soil Scientist, USDA-ARS Environmental Chemistry Laboratory, Beltsville, MD.
  • 2000 - 2005: Soil Scientist, USDA-ARS Environmental Quality Laboratory, Beltsville MD.
  • 2005 - Pres: Soil Scientist, USDA-ARS Hydrology and Remote Sensing Laboratory, Beltsville, MD.


Awards:

  • 1985: Research Excellence Award (M.S. degree), Iowa State University.
  • 1986: Potash and Phosphate Institute Fellowship.
  • 1985 - 1988: USDA National Needs Fellowship.
  • 1989: Research Excellence Award (Ph.D. degree), Iowa State University.
  • USDA Certificates of Merit (1992, 1995, 1996, 1998).


Selected Publications:(please contact the author to determine reprint availability)

( view author's publications/interpretive summaries/technical abstracts since 1999)

Reeves III, J. B. and McCarty, G. W. Quantitative analysis of agricultural soils using near-infrared reflectance spectroscopy and a fiber-optic probe. J. Near Infrared Spectrosc. 9: 25-34. 2001

McCarty, G. W. and Reeves III, J. B. Development of rapid instrumental methods for measuring soil organic carbon. Adv. Soil Sci. pp. 371-380 2001.

Rosecrance R., McCarty, G. W., Shelton, D. R. and Teasdale, J. Denitrification and N mineralization in cover crop production systems. Plant Soil 227:283-290. 2000.

Daughtry, C.S.T., Gish, T.J., Dulaney, W.P., Walthall, C.L., Kung, K,-J.S., McCarty, G.W., J.T. Angier, and P. Buss. Surface and subsurface nitrate flow pathways on a watershed scale. Scientific World 1:155-162. 2001

Walthall, C.L., Gish, T.J., Daughtry, C.S.T., Dulaney, W.P., Kung, K.-J.S., McCarty, G.W., Timlin, D., Angier, J.T., Buss P. and Houser, P.R. An innovative approach for locating and evaluating subsurface pathways for nitrogen loss. Scientific World 1:223-229. 2001.

Angier J.T., McCarty, G.W., Gish, T.J. and Daughtry. C.S.T. Surface and subsurface nitrate flow pathways on a watershed scale. Scientific World 1:642-651. 2001.

Reeves J.B., McCarty, G.W., and Reeves, V.B. Mid-infrared diffuse reflectance spectroscopy for the quantitative analysis of agricultural soils. J. Agric. Food Chem. 49:766-772. 2001

Reeves, J.B. III, McCarty, G.W. and Mimmo, T. . The potential of diffuse reflectance spectroscopy for the determination of carbon inventories in soils. J. Environ. Pollut. 116:277-284. 2002

McCarty, G.W. and Ritchie, J.C. . Impact of soil movement on carbon sequestration in agricultural ecosystems. J. Environ. Pollut. 116:423-430. 2002

McCarty, G.W., Reeves, J.B. III, Reeves, V.B., Follett, R.F., and Kimble, J.M. Mid-infrared and near-infrared diffuse reflectance spectroscopy for measurement of carbon in soils. Soil Sci. Soc. Am. J. 66:640-646. 2002

Angier, J.T., McCarty, G.W., Rice, C.P., and Bialek, K. . Influence of a riparian wetland on nitrate and herbicides exported from a field applied with agrochemicals. J. Agric. Food Chem. 50:4424-4429. 2002

Mimmo T., Reeves, J.B., McCarty, G.W., and Galletti. G. Determination of biological measures by mid-infrared diffuse reflectance spectroscopy in soils within a small toposequence. Soil Sci. 167:281-287. 2002

Mookherji, S., McCarty, G.W., and Angier, J.T. Dissolved gas analysis for assessing the fate of nitrate in wetlands. J. Am. Wat. Resour. 39:381-387. 2003

Ritchie, J.C. and McCarty, G.W. Using 137-Cesium to understand soil carbon redistribution on agricultural watersheds. Soil Till. Res. 69:45-51. 2003

Stuczynski T., McCarty, G.W., and Siebielic, G. Response of soil microbial activities to Cd, Pb, and Zn salt amendments. J. Environ. Qual. 32:1346-1355. 2003

Kristensen, H.L., Debosz, K., and McCarty, G.W. Short-term effects of tillage on mineralization of N and C in soil. Soil Biol. Biochem. 35:979-986. 2003

Ritchie, J.C., and McCarty, G.W. Using 137 Caesium to understand soil carbon redistribution on agricultural watersheds. Soil and Till. Res. 69:45-51 2003

Hapeman, C.J., McConnell, L.L., Rice, C.P., Sadehi, A.M., Schmidt, W.F., McCarty, G.W., Starr, J.L. Rice, P.J., Angier, J.T., and Harman-Fetcho, J.A. Current United States Department of Agriculture-Agricultural Research Service Research on understanding agrochemical fate and transport to prevent and mitigate adverse environmental impacts. Pest. Manag. Sci. 59:681-690. 2003

Siebielic, G., McCarty, G.W., Stuczynski, T., and Reeves, J.B., 2003 . Use of near- and mid-infrared diffuse reflectance spectroscopy for measuring metal content in soil. J. Environ. Qual. 33:2056-69. 2004

Calderon, F.J., McCarty, G.W., Van Kessel, J.A. and Reeves, J.B. Carbon and nitrogen dynamics during incubation of manured soil. Soil Sci. Soc. Am. J. 68:1592-1599. 2004

Venteris, E.R., McCarty, G.W., Ritchie, J.C. and Gish, T. Influence of management history and landscape variables on soil organic carbon and soil redistribution. Soil Science 169:787-795. 2004

Angier, J., McCarty, G., and Prestegaard, K. Hydrology of a first-order riparian zone and stream, Mid Atlantic Coastal Plain, Maryland. Journal of Hydrology. 309:149-166. 2005

Calderon, F.J., McCarty, G.W., and Reeves, J.B. Analysis of manure and soil nitrogen mineralization during incubation. Biology and Fertility of Soils 41:328-336. 2005

Calderon, F.J., McCarty, G.W., and Reeves, J.B. Nitrapyrin delays denitrification on manured soils. Soil Science 170:350-359. 2005

Madari, B.E., Reeves III, J.B. Coelho, M.R. Machado, P.L.O.A., De-Polli, H., Benites, V.M. Souza, L.F., and McCarty, G.W. Mid and near infrared spectroscopic determination of carbon in diverse set of soil from the Brazilian National Soil Collection. Spectroscopic Letters 38:721-740. 2005

Cavigelli, MA, Lengnick, L.L., Buyer, J.S., Fravel, D.R., Handoo, Z.A., McCarty, G.W., Milner, P.D., Sikora, L.J., Wright, S.E., Vinyard, B.T., and Rabenhorst, M. Landscape level variation in soil resources and microbial properties in a no-till corn field. Applied Soil Ecology 29:99-123. 2005

Reeves III, J.B., Follet, R.F., McCarty, G.W., and Kimble, J.M. Can near and mid infrared diffuse reflectance spectroscopy be used to determine d13C values? Commun. Soil Sci. Plant Anal. Soil and Plant Analysis. Accepted 07/5/2005

McCarty, G.W., and Reeves, J.B. Comparison of near infrared and mid infrared diffuse reflectance spectroscopy for field scale measurement of soil fertility parameters. Soil Science. Accepted 08/09/2005

Capuco, A.C., Rice, C.P., Baldwin, R.L., IV Bannerman, D.D., Paape, M.J., Kauf, A.C.W., McCarty, G.W., Hapeman, C.J., Sadeghi, A.M., Starr, J.L., McConnell, L.L., and Van Tassel, C.P. Fate of dietary perchlorate in lactating dairy cows. Proceedings of the National Academy of Sciences. Accepted 08/15/2005

Schumacher J.A. T.C. Kaspar, T.C., Ritchie, J.C., Schumacher, T.E., Karlen, D.L., Venteris, E.R., McCarty, G.W., Colvin, T.S., Jaynes, D.B., Lindstrom, M.J., and Fenton T.E. Identifying spatial patterns of erosion for use in precision conservation. Journal of Soil and Water Conservation Accepted 09/26/2005

Doraiswamy P.C., McCarty G.W., Hunt E.R. and Yost R.S. Modeling soil carbon sequestration in agricultural lands of Mali. Agricultural Systems (Accepted 09/09/2005)

Ritchie, J.C., McCarty, G.W., Venteris, E.R., and Kasper T.C. Soil and soil organic carbon redistribution on the landscape. Geomorphology (Accepted 09/20/2005)

Reeves III, J. B. and McCarty, G. W. The potential of NIRS as a tool for spatial mapping of soil compositions. Proc. 9th Internat. NIRS Meeting, A.M.C. Davies and R. Giangiacomo (Eds) Verona Italy, p. 587-590. 2000

McCarty G.W. and Angier J. Impact of preferential flow pathways on ability of riparian wetlands to mitigate agricultural pollution. Proceedings of Second International Symposium on Preferential Flow pp. 53-56 2000

Ritchie, J.C. and McCarty, G.W. Sedimentation deposition rates and carbon content in the soils of an agricultural riparian ecosystem. Proceedings 7th Federal Interagency Sedimentation Conference pp. 41-46. 2000

Mookherji S. and McCarty G.W. Dissolved gas analysis for assessing nitrate fate in riparian wetland. pp. 125-130. In: P.R. Wigington, Jr. and R.L. Beschta (eds.) Proc. AWRA's 2000 Summer Specialty Conference: Riparian Ecology and Management in Multi-Land Use Watersheds. Portland, OR. 2000

Reeves J.B., McCarty, G.W., Mimmo, T.V., Reeves, V.B., Follet, R.F., Kimble J.M., and Galletti, G.C. Spectroscopic calibrations for the determination of carbon in soils. Proc. World Cong. Soil Sci. 398:1-9. 2002

Reeves J.B. and McCarty G.W. Near and mid infrared spectroscopy for the determination of carbon and other analysts in soil. The Soil Plant Analyst Summer 2002 p. 5-6 2002

Gish T.J., Walthall, C.L. Daughtry, C.S.T., McCarty, G.W., and Dulaney, W.P. Watershed-scale sensing of subsurface flow pathways at the OPE3 site. Proceedings of First Interagency Conference on Research in the Watersheds. Benson AZ. pp. 192-197. 2003

Angier, J.T., McCarty, G.W., Rice C.P., and Bialek K. Improving riparian zone function by identifying critical areas with limited mitigation capacity. Proc. AWRA 2004 Summer Specialty Conference: Riparian Ecosystems and Buffers, Olympic Valley CA CD-ROM pp.6 2004.

McCarty G.W., Venteris E.R. Ritchie J.C. Linkage between soil movement and carbon dynamics in agricultural watersheds. Proceedings of an International Workshop on: Identification of Current Status and Needs of GIS and Databases Technology in the Agricultural Sector - GIS for Analysis and Monitoring of Land Use and Land/Water Quality. Pulawy, Poland pp. 6, 2004

Konare, H., Hue, N.V., Yost, R.S., McCarty, G.W., Doumbia, M., Coulibaly, H., Bagayoko, A. Practical methods of estimating soil organic C in soils of the Sahel, West Africa. Proceedings of a Regional Scientific Workshop on Land Management for Carbon Sequestration, Bamako Mali, pp 1-10 2004

Ritchie, J.C., McCarty G.W., Venteris, E.R., Kaspar, T.C., Owens, L.B. and Nearing, M. Assessing soil organic carbon redistribution with fallout 137Cesium, 4 pp. In: Raine, S.R., Biggs, A.J.W., Menzies, N.W., Freebairn, D.M. and Tolmie, P.E. (eds.), Conserving Soil and Water for Society: Sharing Solutions, ISCO 2004-13th International Soil Conservation Organisation Conference, Brisbane, July 2004, Paper 613, 4 pages, 2004

Ritchie J.C., McCarty G.W., Venteris, E.R. and Kasper T.C. Using sediment budgets to understand soil organic carbon redistribution and budgets, p. 3-8. In: Horowitz, A.J., and Walling D.E. (eds.), Sediment Budget 2, International Association of Hydrological Sciences Publication no. 292, IAHS Press, Wallingford, UK, 2005

Reeves, III, J. B., McCarty, G. W., Follett, R. F., Kimble, J. M. and Mac Madari, B. E. The potential of near- and mid-infrared spectroscopy for the determination of soil carbon. Proceedings of Workshop on C-Sequestrations in the Tropics. Accepted 12/21/04.

Reeves, III, J. B., McCarty, G. W., Follett, R, F. and Kimble, J. M. The potential of spectroscopic methods for the rapid analysis of soil samples. Book, Title not determined. Accepted 07/15/05.



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