Hill, G.M., R.N. Gates, R.K. Hubbard, and C. Blalock. 2002. Integration of winter grazing with irrigated cotton production in Georgia. Cotton Research and Extension Report.
Hubbard, R.K. and G.L. Newton. 2002. Long-term impact of swine lagoon wastewater on shallow groundwater nitrogen levels in vegetated buffer systems. Water Environment Federation Animal Residuals Conference, May 6-8, 2002, Washington, D.C.
Potter, T.L., R.K. Hubbard, C. Bednarz, R. Gates, and W. Hanna. 2002. Use of grass filter-strips to remove herbicide and defoliant residues in runoff from land in cotton production. 2001 report to Cotton Commission.
Altier, Lee S., Richard Lowrance, Randall G. Williams, Shreeram P Inamdar, David D. Bosch, Joseph M. Sheridan, Robert K. Hubbard, and Daniel L. Thomas. 2001. The Riparian Ecosystem Management Model: Simulator For Ecological Processes In Riparian Zones. 279 pages. Draft Copy. Also as USDA Conservation Research Report.
Bosch, D., T. Strickland, J. Sheridan, R. Lowrance, C. Truman, R. Hubbard, T. Potter, D. Wauchope, G. Vellidis, and D. Thomas. USDA-ARS Southeast Watershed Laboratory at Tifton, GA: Index Site Design for the Suwannee Basin. 2001 AGU Meeting Abstracts.
Gascho, G.J., R.K. Hubbard, T.B. Brenneman, A.W. Johnson, D. Sumner, and G.H. Harris. 2001. Effects of Broiler Litter in an Irrigated, Double-Cropped, Conservation-Tilled Rotation. Agron. J. 93:1315-1320.
Griffin, T.S., S.L. Albrecht, J.M. Powell, R.A. Eigenberg, R.K. Hubbard, S.L. McGowen, B.L. Woodbury, and H.A. Torbert III. 2001. Nitrogen mineralization from animal manure: USDA-ARS nationally coordinated research. Agronomy Abstracts.
Hubbard, R.K., C.W. Honeycutt, S. Albrecht, G. Brink, B. Eghball, T. Griffin, M. Powell, K. Sistani, B. Wienhold, and R.J. Wright. 2001. A USDA-ARS Nationally Coordinated Research Project to determine Nitrogen Mineralization from Animal Manure – Properties of Soils. Agronomy Abstracts for Charlotte, N.C.
Hubbard, R.K., R.R. Lowrance, and R.G. Williams. 2001. Preferential Flow in a Coastal Plain Soil as Affected by Tillage. 2nd International Symposium on Preferential Flow, January 2001, Honolulu, Hawaii. P. 261-264.
Hubbard, R.K., W.L. Magette, and J.M. Sheridan. 2001. Application of a watershed scale ranking scheme for evaluating impacts of AFOs on water quality. Proceedings of the Georgia Water Resources Conference. Edited by Kathryn J. Hatcher. P. 682-685.
Hubbard, R.K. and G.L. Newton. 2001. A farm scale test of the effectiveness of overland flow vegetated buffer treatment systems for swine lagoon wastewater. International Symposium on Animal Waste, Raleigh, NC. Fall 2001.
Hubbard, R.K., T.L. Potter, C.W. Bednarz, R.N. Gates, and W.W. Hanna. 2001. Effectiveness of grass buffer systems in filtering defoliant residues in surface runoff from land cropped to cotton. SWCS Annual Meeting, Myrtle Beach, S.C. p. 77. (Abstract)
Lowrance, R., R. K. Hubbard, and R.G. Williams. 2001. Denitrification from a Swine Lagoon Overland Flow Treatment System at a Pasture-Riparian zone Interface. J. of Env. Qual. 30:617-624.
Potter, T.L., R.K. Hubbard, C. Bednarz, R. Gates, and W. Hanna. 2001. Use of grass filter strips to remove defoliant residues in runoff from land in cotton production. In. Cotton Research - Extension Report 2000, A.S. Culpepper and C.W. Bednarz, Editors. P. 184 - 193.
Vellidis, R. Lowrance, R.K. Hubbard, and P. Gay. 2001. Preferential flow caused by past disturbance in a restored riparian wetland. In Proceedings of the 2nd International Symposium, Preferential Flow, Water Movement and Chemical Transport in the Environment. Published by ASAE. P. 61-64.
Bosch, David D., Joseph M. Sheridan, Robert K. Hubbard, Richard R. Lowrance, Tom L. Potter, Tim Strickland, Clint C. Truman, and Don Wauchope. 2000. Scaling relationships for watersheds in the Atlantic Coastal Plain of the Southeastern U.S. Fall AGU Meeting. P. F382.
Hubbard, R.K., G.L. Newton, and G.J. Gascho. 2000. Growth and nutrient uptake response of grass buffers receiving swine lagoon effluent. Agronomy Abstracts p. 42. (Abstract).
Hubbard, R.K., G.L. Newton, G. Vellidis, G.J. Gascho, and R. Lowrance. 2000. Long-term Impact of Dairy Lagoon Wastewater on Shallow Groundwater Quality. 8th International Symposium on Animal, Ag, & Food Process Waste. Oct. 2000. Des Moines, IA. In: Moore, J.A. (Ed.) Animal, Agricultural and Food Processing Wastes. ASAE St. Joseph, MI pp. 229-235.
Hubbard, R.K., J.G. Ruter, and G.L. Newton. 2000. Use of ornamental and wetland plant species to remove nutrients from swine lagoon effluent. Conference Abstracts of Soil and Water Conservation Society Meeting, St. Louis, MO., p. 65.
Lowrance, R.,L.S. Altier, R.G. Williams, S.P. Inamdar, J.M. Sheridan, D.D. Bosch, R.K. Hubbard, and D.L. Thomas. 2000. REMM: The Riparian Ecosystem Management Model. Journal of Soil and Water Conservation 55(1):27-34.
Lowrance, Richard, Robert K. Hubbard, and Randall G. Williams. 2000. Effects of a managed three zone riparian buffer system on shallow groundwater quality in the southeastern coastal plain. J. Soil and Water Conservation 55(2):212-219.
Lowrance, Richard, Robert K. Hubbard, Joseph M. Sheridan, David Bosch, Randall G. Williams, Donald Wauchope, Timothy Strickland, Thomas Potter, and Clint Truman. 2000. Impacts of riparian ecosystems on water quality in coastal plain agricultural watersheds. Fall AGU Meeting. P. F381.
Lowrance, R.R., G. Vellidis, R.K. Hubbard, J.M. Sheridan, D.D. Bosch, R.G. Williams, R.D. Wauchope, D.L. Thomas. 2000. Research on Pollution Control by Riparian Buffers in the Georgia Coastal Plain. Agronomy Abstracts p. 380. (Abstract).
Newton, G.L., G.J. Gascho, G. Vellidis, R.K. Hubbard, R.N. Gates, and R.R. Lowrance. 2000. Liquid Dairy Manure Fertilization of Triple-Crop Forage Systems. 8th International Symposium on Animal, Ag, & Food Process Waste. Oct. 2000. Des Moines, IA
In: Moore, J.A. (Ed.) Animal, Agricultural and Food Processing Wastes. ASAE St. Joseph, MI pp. 273-280.
Potter, Thomas L., Don Wauchope, David Bosch, Joseph Sheridan, Clint Truman, Robert Hubbard, Richard Lowrance, and Timothy Strickland. 2000. Use of rainfall patterns to evaluate potential pesticide loading of surface waters at the watershed scale. Fall AGU Meeting. P. F381.
Sheridan, Joseph M., David.D. Bosch, Robert. K. Hubbard, Richard Lowrance, Tom L. Potter, Tim Strickland, Clint C. Truman, and Don Wauchope. 2000. USDA-ARS Southeast Watershed Research Laboratory (SEWRL) and the Little River Experimental Watersheds. Fall AGU Meeting, p. F381.
Bosch, D.D., R.K. Hubbard, R.A. Leonard, and D.W. Hicks. 1999. Subsurface flow patterns identified through tracer studies in a sandy loam profile. TRANS of ASAE 42(2):337-349.
Entry, J.A., R.K. Hubbard, J.E. Thies, and J.J. Fuhrmann. 1999. Influence of vegetation in riparian filterstrips on coliform bacteria: Movement and survival in surface flow and groundwater. 1999 p. 36.
Entry, James A., Robert K. Hubbard, Janice E. Thies, and Jeff Fuhrman. 1999. The influence of vegetation in riparian filterstrips on coliform bacteria: I. Movement and survival in water. J. Environ. Qual. 29:1206-1214.
Entry, James A., Robert K. Hubbard, Janice E. Thies and Jeff Furhman. 1999. The influence of vegetation in riparian filterstrips on colifrom bacteria: II. Survival in soils. J. Environ. Qual. 29:1215-1224.
Entry, James A. and Robert K. Hubbard. 1999. Efficacy of riparian buffer strips to filter pollutants from wastewater. ASCE 1999 International Water Resource Engineering Presentation Summary. P. 496.
Entry, James A., Janice Thies, Robert K. Hubbard, and Begie H. Harchegani. 1999. Influence of land use on the coliform bacteria in an agricultural watershed. ASCE 1999 International Water Resource Engineering Presentation Summary. P. 157.
Gascho, G.J., B.H. Baldree, T.B. Brenneman, G.H. Harris, D.R. Sumner, R.K. Hubbard, A.W. Johnson, and W.W. Hanna. 1999. Irrigated multiple-cropping using broiler litter in conservation tillage. Proceedings of Southern Tillage Conference, Tifton, GA.
Gascho, G.J., T.B. Brenneman, G.H. Harris, R.K. Hubbard, and W.W. Hanna. 1999. Fluid fertilizers as starter-, foliar-, and side dress-applications in an intensive crop rotation. Fluid Fertilizer Foundation 1999 Forum., 16:128-138.
Gascho, G.J., R.K. Hubbard, and G.H. Harris. 1999. Irrigated, multiple-cropping using broiler litter and supplemental fertilizers in conservation tillage. Agronomy Abstracts p.242.
Gascho, G.J., G.L. Newton, G. Vellidis, R.K. Hubbard, R. Lowrance, and R.N. Gates. 1999. A year-round forage production manure utilization system. USDA-NRI Special Session, Agronomy Abstracts p. 365.
Hubbard, R.K., J.A. Entry, and J.E. Thies. 1999. Movement of coliform bacteria through riparian buffer systems receiving swine lagoon wastewater. ASAE Meeting Paper #992100. Toronto, Ontario.
Hubbard, R.K., J.M. Ruter, G.L. Newton, and J.G. Davis. 1999. Nutrient uptake and growth response of six wetland/riparian plant species receiving swine lagoon effluent. TRANS of ASAE. 42(5):1331-1341.
Hubbard, R.K., G.L. Newton, and G.J. Burtle. 1999. Land Application of Alligator Farm Waste Using an Overland Flow System. Southern Branch American Society of Agronomy Meeting, Memphis, TN, Jan. 1999. Abstract P. 11.
Hubbard, R.K., D.D. Radcliffe, K. Cassel, J. Hook, and J. Dane. 1999. Book Chapter Entitled MLRA 133A: Southern Coastal Plain. In: Water and Chemical Transport in Soils of the Southeastern United States: Special Report 197, Arkansas Agricultural Experiment Station p. 235-263.
Inamdar, S.P., R.R. Lowrance, L.S. Altier, R.G. Williams, R.K. Hubbard. 1999. Riparian ecosystem management model (REMM): II. Testing of the water quality and nutrient cycling component for a coastal plain riparian system. TRANS of ASAE 42(6): 1691-1707.
Newton, G.L., G.J. Gascho, G. Vellidis, R.N. Gates, R.K. Hubbard, R. Lowrance, A.W. Johnson, W.G. Hudson, III, H.R. Sumner, R.G. Williams, and J.R. Allison. 1999. Nutrient balance for triple-crop forage production systems fertilized with dairy manure for commercial fertilizer. In: Hatcher, K.J. (Ed.),Proceedings of the 1999 Georgia Water Resources Conference, March 30-31. Pp. 279-282.
Gascho, G.J., B.H. Baldree, T.B. Brenneman, G.H. Harris, and R.K. Hubbard. 1998. Broiler litter and starter fluid fertilizers applications to peanut in an intensive crop rotation. 1998 Peanut and Extension Report. 6 pages.
Hubbard, R.K., and R.R. Lowrance. 1998. Dairy Cattle Manure Management. In: Agricultural Utilization of Municipal, Animal and Industrial Wastes. R. J. Wright, W.D. Kemper, P.D. Millner, J.F. Power, and R.F. Korcak, Managing Editors. U.S. Department of Agriculture, Agricultural Research Service, Conservation Research Report Number 44 (135 pp.)p. 91-100. Also Desk Copy p. 2-57 to 2-72.
Hubbard, R.K., G.L. Newton, and G.J. Burtle. 1998. Land application of swine lagoon wastewater using an overland flow system. ASAE meeting paper #982112, Orlando, FL, July 1998.
Hubbard, R.K., G.L. Newton, and J.G. Davis. 1998. Phosphorus movement in riparian buffer systems receiving swine lagoon effluent. Workshop on practical and innovative measures for the control of agricultural phosphorus losses to water. Greenmount Agricultural College, Antrim, Northern Ireland, June 1998.p. 116-117.
Hubbard, R.K., G.L. Newton, J.G. Davis, R. Lowrance, G. Vellidis, and R. Dove. 1998. Nitrogen assimilation by riparian buffer systems receiving swine lagoon wastewater. TRANS of ASAE 41(5):1295-1304.
Inamdar, S., L. Altier, R. Lowrance, R. Williams, and R. Hubbard. 1998. The riparian ecosystem management model (REMM): nutrient dynamics. First Federal Interagency Hydrologic Modeling Conference. April 19-23, 1998. p. 1-73 - 1-80.
Lowrance, R., L.S. Altier, R.G. Williams, S.P. Inamdar, D.D. Bosch, J.M. Sheridan, D.L. Thomas, and R.K. Hubbard. 1998. REMM: The Riparian Ecosystem Management Model: Simulator for ecological processes in riparian zones. In: Proc., First Federal Interagency Hydrologic Modeling Conference. Las Vegas, NV. April 19-23. p. 1-81 - 1-88.
Newton, G.L., R.K. Hubbard, R.R. Lowrance, and G. Vellidis. 1998. Nitrogen movement in buffer systems receiving surface irrigated swine lagoon effluent. Animal Production systems and the Environment. An International Conference on Odor, Water Quality, Nutrient Management, and Socioeconomic Issues. Iowa Sate University, Des Moines, IA. Pp. 781-786.
Newton, G.L., G. Vellidis, G.J. Gascho, W.G. Hudson, III, R.K. Hubbard, R.R. Lowrance, R.N. Gates, and A.W. Johnson. 1998. Triple-crop forage production under dairy manure irrigation. J. Anim. Sci. 76(Suppl. 1):194(Abstr.).
Vellidis, G., R.K. Hubbard, J.G. Davis, R. Lowrance, R.G. Williams, J.C. Johnson, and G.L. Newton. 1997. Nutrient concentrations in the soil solution and shallow groundwater of a liquid dairy manure land application site. ASAE Summer Meeting Paper # 972143, August 10-14, Minneapolis, Minnesota.
Hubbard, R.K., G.L. Newton, and J.G. Davis. 1997. Assimilation of phosphorus by riparian buffer systems receiving swine lagoon effluent. Symposium "Phosphorus Biogeochemistry in Florida Ecosystems. July 13-16, 1997, Clearwater Beach Fl. Abstract #11.
Lowrance, R., L.S. Altier, R.G. Williams, S.P. Inamdar, D.D. Bosch, J.M. Sheridan, D.L. Thomas, and R.K. Hubbard. 1998. REMM: The riparian ecosystem management model: Simulator for ecological processes in riparian zones. In: Proc., First Federal Interagency Hydrologic Modeling Conference. Las Vegas, NV. (In Press).
Altier, L.S., R. Lowrance, R.G. Williams, S.P. Inamdar, J.M. Sheridan, D.D. Bosch, R.K. Hubbard, and D.L. Thomas. 1998. REMM: The riparian ecosystem management model. In: Proc., First Federal Interagency Hydrologic Modeling Conference. Las Vegas, NV. In Press.
Hubbard, R.K. and R.R. Lowrance. 1997. Assessment of forest management effects on nitrate removal by riparian buffer systems. TRANS of ASAE 40(2):383-391.
Hubbard, R.K., J.M. Ruter, and G.L. Newton. 1997. Growth response of six wetland species to swine lagoon effluent. Anaheim, CA, October 1997. Agronomy Abstracts, p. 31 (Abstract).
Hubbard, R.K. 1997. Riparian buffer systems for managing animal wastes. Proceedings of the Southeastern Sustainable Animal Waste Management Workshop. p. 177-180.
Hubbard, R.K.,G.L. Newton, and R.R. Lowrance. 1997. Effectiveness of riparian buffers in filtering nitrogen from swine lagoon waste. Southern Ag. Workers Meeting, Birmingham, AL, February 1997. p. 12 (Abstract).
Vellidis, G., R.K. Hubbard, J.G. Davis, R. Lowrance, R.G. Williams, J.C. Johnson Jr., and G.L. Newton. 1996. Nitrate concentrations in the soil solution and shallow groundwater of a liquid dairy manure land application site. TRANS. of ASAE. 39(4):1357-1365.
Hubbard, R.K., and R.R. Lowrance. 1996. Solute transport and filtering through a riparian forest. TRANS ASAE:39(2):477-488.
Hubbard, R.K., R.R. Lowrance, G.L. Newton, G. Vellidis, J.G. Davis, and J.M. Ruter. 1996. Protection of Soil and Water Quality Through Use of Riparian Forest Buffer Systems. Soil and Water Conservation Society Meeting, Keystone, Colorado. Abstract #1.
Newton, G.L., J.C. Johnson, Jr., J.G. Davis, G. Vellidis, R.K. Hubbard, and R.R. Lowrance. 1995. Nutrient recoveries from varied year round applications of liquid dairy manure on sprayfields. Proc. Florida Dairy Prod. Conf., April 11-12. Univ. Florida. p. 113-123.
Newton, G.L., R.K. Hubbard, J.G. Davis, R. Lowrance and G. Vellidis. 1995. Surface irrigation of swine lagoon effluent in the Coastal Plain. Univ. of Georgia, College of Agric. & Environ. Sci., Dept. of Anim. & Dairy Sci. Annual Report, pp. 305-310.
Newton, G.L., J.C. Johnson, Jr., J.G. Davis, G. Vellidis, R.K. Hubbard, R. Lowrance, A.W. Johnson and R.G. Williams. 1995. Nutrient recovery and movement associated with a year round forage production system fertilized with liquid dairy manure. Univ. of Georgia, College of Agric. & Environ. Sc., Dept. of Anim. & Dairy Sci. Annual Report, pp. 192-198.
Hubbard, R.K., G. Vellidis, R. Lowrance, J.G. Davis, and G.L. Newton. 1995. Using riparian buffers to treat animal waste. Proceedings of the Animal Waste and the Land-Water Interface Conference, Kenneth Steele, ed. Lewis Publishers, p. 127-134.
Hubbard, R.K., R.R. Lowrance, J.G. Davis, G.L. Newton, G. Vellidis, M.C. Smith, and R. Dove. 1995. Riparian buffer systems for management of agricultural effluents. Proceedings of the 1995 Georgia Water Resources Conference, April 11-12, 1995, University of Georgia. Kathryn J. Hatcher, Editor, p. 180-182.
Hubbard, R.K., J.G. Davis, R.R. Lowrance, G.L. Newton, G. Vellidis, and C.R. Dove. 1995. Managing riparian buffer systems to utilize agricultural effluents. Proceedings of Conference on Versatility of Wetlands in the Agricultural Landscape, Kenneth Campbell (ed.) p. 181-189.
Vellidis, G., R. Lowrance, and R.K. Hubbard. 1995. Processing of pesticide and nutrient inputs by a restored riparian forest. Proceedings of Conference on Versatility of Wetlands in the Ag. Landscape, Kenneth Campbell (ed.) p. 191-200.
Hubbard, R.K., J.M. Sheridan, W.C. Mills, and R.R. Lowrance. 1995. Surface Runoff, Sediment, and Nutrient Losses from a small Coastal Plain Watershed as Affected by Tillage. Agronomy Abstracts p. 285 (Abstract).
Lowrance, R.R., G. Vellidis, and R. Hubbard. 1995. Denitrification in a restored riparian forest wetlands. J. Environ. Quality 24:808-815.
Newton, G.L., R.K. Hubbard, J.C. Johnson, Jr., J.G. Davis, G. Vellidis, R. Lowrance, A.W. Johnson, R.G. Williams, and C.R. Dove. 1995. Year-round forage production-manure utilization systems. J. Anim. Sci. 73 (Suppl. 1): 11.
Gascho, G.J., R.S.C. Menezes, W.W. Hanna, R.K. Hubbard, and J.P. Wilson. 1995. Nutrient requirements of Pearl Millet. Proceedings of the First National Grain Pearl Millet Symposium. Tifton, GA. p. 92-98.
Davis, J.G., J.C. Johnson, G. Vellidis, R.K. Hubbard, R.R. Lowrance, and G.L. Newton. 1995. Nitrogen uptake and leaching in a no-till forage rotation irrigated with liquid dairy manure. Proceedings of the Animal Waste and the Land-Water Interface Conference, Kenneth Steele, ed. Lewis Publishers, p. 405-410.
Hubbard, R.K., J.G. Davis, R.R. Lowrance, G.L. Newton, G. Vellidis, and R. Dove. 1995. Designing riparian buffer systems for utilization and treatment of effluent. Clean Water in the 21st Century Conference, March, 1995. Conference Proceedings Volume II: Nutrients p. 75-77.
Bosch, David D., Robert Hubbard, Larry T. West, and R. Richard Lowrance. 1995. Subsurface flow patterns in a riparian buffer system. TRANS. of ASAE. 37(6):1783-1790.
Newton, G.L., R.K. Hubbard, J.C. Johnson, Jr., J.G. Davis, G. Vellidis, R. Lowrance, A.W. Johnson, R.G. Williams and C.R. Dove. 1994. Utilization and environmental consequences of land application of liquid manure in the Southeast Coastal Plain. Proceedings of Great Plains Agricultural Council Animal Waste Conference, Edited by Daniel E. Storm and Kareta G. Casey. pp. 66-73.
Hubbard, R.K., and J.M. Sheridan. 1994. Retention of solutes by clayey coastal plain soils. J. Soil and Water Cons. 49(1): 356-362.
Hubbard, R.K. and R.R. Lowrance. 1994. Managing riparian forest buffer systems to filter nitrates. Agronomy Abstracts p. 418.(Abstract)
Davis, J.G., J.C. Johnson, G.L. Newton, G. Vellidis, R.K. Hubbard, and R.R. Lowrance. 1994. Nutrient Cycling on a Southern Dairy: From Lagoon to Forage, Soil, and Water. Agronomy Abstracts p. 81.
Hubbard, R.K., and R.R. Lowrance. 1994. Riparian forest buffer system research at the Coastal Plain Experiment Station, Tifton, GA. Water, Air, and Soil Pollution 77: 409-432. Also in Wetlands of the Interior Southeastern United States, Carl C. Trettin, W. Michael Aust, and Joe Wisniewski editors, Kluwer Academic, pp. 213-236.
Hubbard, R.K., G.L. Newton, R. Lowrance, J.G. Davis, R.Dove, and G. Vellidis. 1994. Grass riparian zone buffer systems for filtering swine lagoon waste. Proceedings, Constructed Wetlands for Animal Waste Management. pp. 124-143.
Hubbard, R.K., R.R. Lowrance, J.Davis, and G.L. Newton. 1994. Removing nitrogen from swine waste using riparian zones. ASAE summer meeting paper #94-4070
Hubbard, R.K., W.L. Hargrove, R.R. Lowrance, R.G. Williams, and B.G. Mullinix. 1994. Physical properties of a clayey Coastal Plain soil as affected by tillage. J. Soil and Water Conserv.49(3): 276-283.
Hubbard, R.K., and J.M. Sheridan. 1994. Nitrates in groundwater in the southeastern United States. In: Advances in Environmental Science. Contamination of Groundwaters, Edited by D.C. Adriano, A.K. Ishkandar, and I.P. Murarka. Copyright: Science Reviews, Northwood.
Altier, L.S., R. Lowrance, R.K. Hubbard, and G. Vellidis. 1993. Research and modeling of Coastal Plain riparian forest ecosystems in Georgia. Forestry Conference, Ames, IA.
Bosch, D.D., R.K. Hubbard, and R.R. Lowrance. 1993. Subsurface flow patterns in a riparian buffer system. ASAE Winter Paper #93-2551.
Hubbard, R.K., G.L. Newton, G. Vellidis, J. Davis-Carter, R.R. Lowrance, and C.R. Dove. 1993. Use of riparian zones for animal waste treatment. ASAE Winter Paper #93-2575.
Hubbard, R.K., and R.R. Lowrance. 1993. Managing riparian forest buffer systems for a sustainable environment. SAMAB Conference on Wetland Ecology, Management, and Conservation. p. 12 (Abstract).
Bosch, D.D., R.A. Leonard, and R.K. Hubbard. 1993. Unsaturated zone transport at the Plains, Georgia, field site. Toxic Substances Hydrology Program Technical Meeting, Colorado Springs, Colorado, September 1993, p. 12.
Hubbard, R.K., D.D. Bosch, R.A. Leonard, and D.W. Hicks. 1993. Spatial variability of soil properties affecting chemical transport at the Plains, GA groundwater research site. Toxic Substances Hydrology Program Technical Meeting, Colorado Springs, Colorado, September 1993, p. 13.
Hicks, D.W., J.B. McConnell, H.H. Persinger, J.D. Scholz, and R.K. Hubbard. 1993. Two-dimensional distribution of a potassium bromide tracer in the unsaturated zone at the Plains, Georgia, Research site. In U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Colorado Springs, Colorado, eds., Mallard, G.E., and D.A. Aronson. U.S. Geological Survey, Water Resources Investigators Report 94-4015, p. 971-982.
Burgoa, B., R.K. Hubbard, R.D. Wauchope, and J.G. Davis-Carter. 1993. Simultaneous determination of runoff and leaching losses of chemicals using tilted beds. Communications in Soil Science and Plant Analysis 24 (19-20): 2689-2699.
Altier, L.S., R.R. Lowrance, R.G. Williams, J.M. Sheridan, D.D. Bosch, R.K. Hubbard, W.C. Mills, and D.L. Thomas. 1993. An Ecosystem Model for the Management of Riparian Areas. Riparian Ecosystems in the Humid U.S. Conference p. 33 (Abstract).
Hubbard, R.K., and R.R. Lowrance. 1993. Spatial and Temporal Patterns of Solute Transport through a Riparian Forest. Riparian Ecosystems in the Humid U.S. Conference p. 35 (Abstract).
Davis-Carter, J.G., G. Vellidis, R.K. Hubbard, R.R. Lowrance, J.C. Johnson, and G.L. Newton. 1992. Impact of liquid dairy manure application rate on groundwater nitrate concentration. Georgia Chapter, Soil and Water Conservation Society, Athens, GA June 25-26.
Davis-Carter, J.G., R.K. Hubbard, R.R. Lowrance, G. Vellidis, J.C. Johnson, and G.L. Newton. 1992. Facility for multi-disciplinary research addressing environmental effects of liquid dairy manure application to forages. Agronomy Abstracts p. 73.
Vellidis, G., R. Lowrance, M.C. Smith, and R.K. Hubbard. 1992. Methods to assess the water quality impact of a restored riparian wetland. Journal of Soil and Water Conservation 48(3): 223-230.
Hubbard, R.K., G. Vellidis, and R. Lowrance. 1992. Wetland restoration for filtering nutrients from an animal waste application site. ASAE International Symposium Land Reclamation: Advances in Research and Technology. Nashville, TN. p. 144-150.
Vellidis, G., M.C. Smith, R. Lowrance, and R.K. Hubbard. 1992. Redistributive surface runoff samplers for nutrient assimilation measurement in a restored wetland. ASAE International Symposium, Land Reclamation: Advances in Research and Technology. Nashville, TN. p. 135-143.
Hubbard, R.K., R.R. Lowrance, and G. Vellidis. 1992. Using riparian forest buffer systems for a sustainable environment. Univ. of GA Symposium "Designing Tomorrow's Sustainable Environment Today" Abstract #18.
Hubbard, R.K., and R.R. Lowrance. 1992. Solute transport through a riparian forest buffer system. Agronomy Abstracts p. 43.
Hubbard, R.K., and R.R. Lowrance. 1992. Using riparian forest buffer systems to reduce soil and water degradation. SWCS 47th meeting, Baltimore, MD. (Abstract and Handout). p. 15.
Bosch, D.D., R.A. Leonard, and R.K. Hubbard. 1991. Solute transport under field conditions in Georgia Coastal Plain soils. Agronomy Abstracts p. 214.
Vellidis, G., M.C. Smith, R. Lowrance, and R.K. Hubbard. 1991. Restoration of a riparian wetland for agricultural water quality improvement. ASAE Winter Paper #91-2507.
Vellidis, G., S.T. Henry, C.D. Perry, and R.K. Hubbard. 1991. Methodology and Instrumentation for assessing the water quality impacts of a dairy waste land application system. ASAE Winter Paper #91-2598.
Vellidis, G., R. Lowrance, R. Hubbard, and M. Smith. 1991. Restoration of a riparian wetland for agricultural water quality improvement. Univ. of GA Symposium "Designing Tomorrow's Sustainable Environment Today" Abstract #41.
Hicks, D.W., J.B. McConnell, and R.K. Hubbard. 1991. Effect of the unsaturated zone on the migration and retardation of a conservative tracer at the Plains, Georgia, Research Site. USGS. Proceedings of the 4th Toxic Substances Hydrology Technical Meeting. p. 597-600.
Hubbard, R.K., D.L. Thomas, and H.E. Henry. 1991. Detecting soil water movement by resistance-based sensors at the Plains, GA, groundwater research site. Agronomy Abstracts p. 44.
Vellidis, G., R.K. Hubbard, R.R. Lowrance, and J.G. Davis-Carter. 1991. Measuring the environmental impacts of a liquid dairy manure land application system. International seminar of 1st, 2nd, and 3rd Technical Section of CIGR on Environmental Challenges and Solutions in Agricultural Engineering. Agricultural University of Norway, July 1-4 1991. p 132-138.
Hubbard, R.K., R.R. Lowrance, G.Vellidis, and J.G. Davis-Carter. 1991. A forage crop production system using liquid dairy manure. II. Water quality effects. Proceedings for the environmentally sound agriculture conference. p. 641-648.
Hicks, D.W., J.B. McConnell, and R.K. Hubbard. 1991. Effect of the unsaturated zone on the migration and retardation of a conservative tracer at the Plains, Georgia, Research Site. USGS. Proceedings of the 4th Toxic Substances Hydrology Technical Meeting. p. 597-600.
Hubbard, R.K., D.L. Thomas, and H.E. Henry. 1991. Detecting soil water movement by resistance-based sensors at the Plains, GA, groundwater research site. Agronomy Abstracts p. 44.
Vellidis, G., R.K. Hubbard, R.R. Lowrance, and J.G. Davis-Carter. 1991. Measuring the environmental impacts of a liquid dairy manure land application system. International seminar of 1st, 2nd, and 3rd Technical Section of CIGR on Environmental Challenges and Solutions in Agricultural Engineering. Agricultural University of Norway, July 1-4 1991. p 132-138.
Hubbard, R.K., R.R. Lowrance, G.Vellidis, and J.G. Davis-Carter. 1991. A forage crop production system using liquid dairy manure. II. Water quality effects. Proceedings for the environmentally sound agriculture conference. p. 641-648.
Sheridan, J.M., and R.K. Hubbard. 1991. Climate and hydrologic trends in the southeastern Coastal Plain. Symposium on Global Change: A Southern Perspective, Charleston, South Carolina. p. 259-280.
Radcliffe, D.E., L.T. West, R.K. Hubbard, and L.E. Asmussen. 1991. Surface sealing in Coastal Plains loamy sands. Soil Sci. Soc. Am. Jour. 55(1) 223-227.
Hubbard, R.K., R.A. Leonard, and A.W. Johnson. 1991. Nitrate transport on a sandy Coastal Plain soil underlain by plinthite. TRANS. of ASAE 34 (3): 802-808.
Sheridan, J.M., R.K. Hubbard, and R.R. Lowrance. 1991. Impact of sedimentation in alluvial aquifer systems on hydrologic response of Coastal Plain watersheds. Proceedings of Fifth Federal Interagency Sedimentation Conference. Vol. 2 p. 40-47.
Hubbard, R.K., L.E. Asmussen, and H.F. Perkins. 1990. Use of ground-penetrating radar on upland Coastal Plain soils. J. Soil Wat. Conserv. 45 (3) 399-405.
Hubbard, R.K., J.M. Sheridan, and L.R. Marti. 1990. Dissolved and suspended solids transport from Coastal Plain watersheds. J. Environ. Qual. 19: 413-420.
Hubbard, R.K., and J.M. Sheridan. 1989. Nitrate movement to groundwater in the southeastern Coastal Plain. J. Soil Wat. Conserv. 44 (1):20-27.
Hubbard, R.K., and J.M. Sheridan. 1989. Solute movement in clayey soils of the Georgia Coastal Plain. Amer. Soc. Agron. Abs., Southern Branch, p. 9 (Abstract).
Hubbard, R.K., R.G. Williams, and M.D. Erdman. 1989. Chemical transport from Coastal Plain soils under simulated rainfall: I. Surface runoff, percolation, nitrate, and phosphate movement. TRANS of ASAE: 32 (4) 1239-1249.
Hubbard, R.K., R.G. Williams, M.D. Erdman, and L.R. Marti. 1989. Chemical transport from Coastal Plain soils under simulated rainfall: II. Movement of cyanazine, sulfometuron-methyl, and bromide. TRANS. ASAE 32(4):1250-1257.
Hubbard, R.K., and J.M. Sheridan. 1989. Streamflow water quality in the Georgia Coastal Plain. Proceedings of the 1989 Georgia Water Resources Conference: p. 17-20.
Radcliffe, D.E., L.T. West, R.K. Hubbard, and L.E. Asmussen. 1989. Effect of surface sealing on infiltration in Coastal Plain loamy sands. Agronomy Abstracts p. 291.
Hubbard, R.K., and R.A. Leonard. 1989. Nitrate movement through a sandy Coastal Plain soil. ASAE Winter Meeting Paper # 892503.
Hubbard, R.K., L.E. Asmussen, H.F. Perkins, and H.D. Allison. 1988. Application of ground-penetrating radar to Coastal Plain soils with variable texture and mineralogy. Second International Symposium on Geotechnical Applications of Ground-Penetrating Radar.p.17. (Abstract).
Hubbard, R.K., D.L. Thomas, R.A. Leonard, and J.L. Butler. 1987. Surface runoff and shallow ground water quality as affected by center pivot applied dairy cattle wastes. TRANS. of ASAE 30(2): 430-437.
Sheridan, J.M., and R.K. Hubbard. 1987. Transport of solids in streamflow from Coastal Plain watersheds. J. Environ. Qual. 16: 131-136.
Blume, L.J., H.F. Perkins, and R.K. Hubbard. 1987. Subsurface water movement in an upland Coastal Plain soil as influenced by plinthite. Soil Sci. Soc. Am. J. 51: 774-779.
Hubbard, R.K., M.D. Erdman, and R.G. Williams. 1987. Phosphate and nitrate movement in Coastal Plain soils under simulated rainfall. Agron. Abs., p. 27. (Abstract).
Sheridan, J.M., and R.K. Hubbard. 1987. Nitrate leaching in recharge and nonrecharge areas of the Coastal Plain. Agron. Abs., p. 34. (Abstract).
Hubbard, R.K., M.D. Erdman, and R.G. Williams. 1987. Groundwater nitrate contamination in the Coastal Plain. American Society of Engineers Winter Meeting Paper#87-2633.
Hubbard, R.K., J.M. Sheridan, and L.R. Marti. 1986. Sediment transport in Coastal Plain streams. Agron. Abs., p. 244. (Abstract).
Butler, J.L., J.C. Johnson, Jr., G.L. Newton, and R.K. Hubbard. 1986. Forage production system using dairy flush water. American Society of Agricultural Engineers Summer Meeting Paper #86-1034.
Hubbard, R.K., G.J. Gascho, J.E. Hook, and W.G. Knisel. 1986. Nitrate leaching into shallow ground water through a Coastal Plain sand. TRANS. of ASAE 29(6):1564-1571.
Hubbard, R.K., G.J. Gascho, and W.G. Knisel. 1986. Nitrate leaching into shallow ground water in the Georgia Coastal Plain as affected by N management. American Chemical Society Division of Fertilizer and Soil Chemistry Paper #15 (Abstract).
Hubbard, R.K., C.R. Berdanier, H.F. Perkins, and R.A. Leonard. 1985. Characteristics of selected upland soils of the Georgia Coastal Plain. Georgia Journal of Science, p. 28 (Abstract).
Hubbard, R.K., C.R. Berdanier, H.F. Perkins, and R.A. Leonard. 1985. Characteristics of selected upland soils of the Georgia Coastal Plain. U.S. Department of Agriculture, Agricultural Research Service, ARS-37, 72 p.
Hubbard, R.K., and D.A. Woolhiser. 1985. Prediction of solute transport in overland flow using an incomplete mixing model with KINEROS. EOS Vol. 66, No. 18, p. 264 (Abstract).
Hubbard, R.K., W.G. Knisel, and G.J. Gascho. 1985. A comparison of nitrate leaching losses under N applied conventionally or by fertigation. Proceedings of the Third National Symposium on Chemigation, Univ. of Georgia, pp. 51-57.
Hubbard, R.K., D.L. Thomas, and R.A. Leonard. 1985. Impact of center pivot applied dairy cattle wastes on shallow groundwater nitrates. Agron. Abs., p. 26 (Abstract).
Hubbard, R.K., and J.M. Sheridan. 1984. Rainfall, runoff, and non-point source loads in Coastal Plain watersheds. Amer. Soc. Agron. Abs., Southern Branch, p. 18 (Abstract).
Hubbard, R.K., L.E. Asmussen, and H.D. Allison. 1984. Shallow groundwater quality beneath an intensive multiple cropping system using center pivot irrigation. J. Environ. Qual. 13: 156-161.
Hubbard, R.K., G.J. Gascho, and J.E. Hook. 1983. Nitrate transport to shallow groundwater in a Coastal Plain sand under irrigated corn. Amer. Soc. Agron. Abs., Southern Branch, p. 17 (Abstract).
Hubbard, R.K., and J.M. Sheridan. 1983. Water and nitrate-nitrogen losses from a small, upland Coastal Plain Watershed. J. Environ. Qual. 12: 291-295.
Hubbard, R.K., A.E. Erickson, B.G. Ellis, and A.R. Wolcott. 1982. Movement of diffuse source pollutants in small agricultural watersheds of the Great Lakes basin. J. Environ. Qual. 11: 117-123.
Hubbard, R.K., and J.M. Sheridan. 1982. Characterizing hydrologic performance of upland soils in the southeastern United States. EOS Vol. 63, No. 45. p. 934 (Abstract).
Gascho, G.J., J.E. Hook, and R.K. Hubbard. 1982. Nitrogen management for efficiency in irrigated corn on a Coastal Plain sand. Agron Abs., p. 207 (Abstract).
Hubbard, R.K. 1979. A computer simulation model of the effects of soil structure and drought stress on navy bean (phaseolus vulgaris) growth and yield. (Doctoral dissertation), Michigan State University 192 p.
Hubbard, R.K., and A.E. Erickson. 1978. A mathematical model of Michigan navy bean growth and yield as affected by physical stresses. Agron. Abs., p. 130 (Abstract).
Hubbard, R.K., B.G. Ellis, A.E. Erickson, and A.R. Wolcott. 1976. Nutrient movement on two small watersheds. Agron. Abs., p. 25. (Abstract).
Hubbard, R.K. The vertical and horizontal redistribution of nitrogen, chloride, and phosphorus by precipitation and surface runoff on two small watersheds. Masters Thesis, Michigan State University, 1975. 114 pages.