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United States Department of Agriculture

Agricultural Research Service

Timothy Parkin (Tim)

Research Microbiologist


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Gas chromatograph analysis on closed air and nitrogen oxide storage atmospheres of recalcitrant seeds of Quercus Alba - (Peer Reviewed Journal) - (15-Apr-14)
Trace gas fluxes from a northern mixed-grass prairie interseeded with alfalfa - (Peer Reviewed Journal) - (09-Apr-14)
Nitrous oxide emissions from intensively managed agroecosystems: The role of carbon inputs - (Abstract Only)
Castellano, M.J., Basche, A., Iqball, J., Kaspar, T.C., Miguez, F., Mitchell, D.C., Parkin, T.B. 2013. Nitrous oxide emissions from intensively managed agroecosystems: The role of carbon inputs. American Geophysical Union Meeting Abstract Database. Available at: http://abstractsearch.agu.org/meetings/2013/FM/sections/B/sessions/B14C/abstracts/B14C-01.html.
Rye cover crop effects on nitrous oxide emissions from a corn-soybean system - (Abstract Only) - (06-Nov-13)
Enhanced efficiency fertilizers: Effects on agronomic performance of corn in Iowa Reprint Icon - (Peer Reviewed Journal)
Hatfield, J.L., Parkin, T.B. 2014. Enhanced efficiency fertilizers: Effect on agronomic performance in Iowa. Agronomy Journal. 106(2):771-780.
Nitrous oxide emissions from cropland: A procedure for calibrating the DayCent biogeochemical model using inverse modelling - (Peer Reviewed Journal) - (19-Aug-13)
Enhanced efficiency fertilizers: Effect on nitrous oxide emissions in Iowa Reprint Icon - (Peer Reviewed Journal)
Parkin, T.B., Hatfield, J.L. 2014. Enhanced efficiency fertilizers: Effect on nitrous oxide emissions in Iowa. Agronomy Journal. 106(2):694-702.
Data analysis considerations - (Book / Chapter)
Venterea, R.T., Parkin, T.B., Cardebas, L., Petersen, S.O., Petersen, A.R. 2013. Data analysis considerations. In: DeKlein, C., Harvey, M., editors. Global Research Alliance on Agricultural Greenhouse Gas Emissions. New Zealand Ministry for Primary Industries, Wellington, New Zealand. Available: http://www.globalresearchalliance.org/research/livestock/activities/nitrous-oxide-chamber-methodology-guidelines/.
Spatial variation of CO2 fluxes in corn and soybean fields - (Peer Reviewed Journal)
Hatfield, J.L., Parkin, T.B. 2012. Spatial variation of CO2 fluxes in corn and soybean fields. Agricultural Sciences. 3:986-995.
Effectiveness of oat and rye cover crops in reducing nitrate losses in drainage water - (Peer Reviewed Journal)
Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B., Singer, J.W. 2012. Effectiveness of oat and rye cover crops in reducing nitrate losses in drainage water. Agricultural Water Management. 110:25-33. DOI:10.1016/j.agwat.2012.03.010.
Calculating the detection limits of chamber-based soil greenhouse gas flux measurements - (Peer Reviewed Journal)
Parkin, T.B., Venterea, R.T., Hargreaves, S.K. 2012. Calculating the detection limits of chamber-based soil greenhouse gas flux measurements. Journal of Environmental Quality. 41(3):705-715. DOI:10.2134/jeq2011.0394.
Nitrogen management: Unraveling the effects of timing and form - (Proceedings)
Hatfield, J.L., Parkin, T.B. 2011. Nitrogen management: Unraveling the effects of timing and form. North Central Extension Industry Soil Fertility Conference Proceedings. 27:42-48.
Agricultural management and greenhouse gas flux: cropland management in eastern and central US - (Book / Chapter)
Cavigelli, M.A., Parkin, T.B. 2012. Agricultural management and greenhouse gas flux: cropland management in eastern and central US. In: Liebig, M.A., Franzluebbers, A.J., Follett, R.F., editors. Managing Agricultural Greenhouse Gases. London, England: Academic Press. p. 177-233.
Calculating the detection limits of chamber-based greenhouse gas flux measurements - (Abstract Only)
Parkin, T.B., Venterea, R.T., Hargreaves, S.K. 2011. Calculating the detection limits of chamber-based greenhouse gas flux measurements. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting. Oct. 16-19, 2011, San Antonio, TX. CD-ROM.
Effectiveness of oat and rye cover crops in reducing nitrate losses in drainage water - (Abstract Only)
Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B., Singer, J.W. 2011. Effectiveness of oat and rye cover crops in reducing nitrate losses in drainage water. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting. Oct. 16-19, 2011, San Antonio, TX. CD-ROM.
Soil CO2 flux in response to wheel traffic in a no-till system - (Peer Reviewed Journal)
Kaspar, T.C., Parkin, T.B. 2011. Soil CO2 flux in response to wheel traffic in a no-till system. Soil Science Society of America Journal. 75:2296-2304.
Carbon dioxide fluxes in corn-soybean rotations in the Midwestern U.S.: Inter- and intra-annual variations, and biophysical controls - (Peer Reviewed Journal)
Hernandez-Ramirez, G., Hatfield, J.L., Parkin, T.B., Sauer, T.J., Prueger, J.H. 2011. Carbon dioxide fluxes in corn-soybean rotations in the Midwestern U.S.: Inter- and intra-annual variations, and biophysical controls. Agriculture and Forest Meterology. 12:1831-1842.
Quantifying biases in non-steady state chamber measurements of soil-atmosphere gas exchange - (Book / Chapter)
Venterea, R.T., Parkin, T.B. 2012. Quantifying biases in non-steady state chamber measurements of soil-atmosphere gas exchange. In: Liebig, M., Follett, R., Franzluebbers, A., Editors. Managing Agricultural Greenhouse Gases: Coordinated Agricultural Research through GRACEnet to Address our Changing Climate. Waltham, MA: Academic Press. p. 327-343.
Mitigation opportunities from land management practices in a warming world: Increasing potential sinks - (Book / Chapter)
Hatfield, J.L., Parkin, T.B., Sauer, T.J., Prueger, J.H. 2012. Mitigation opportunities from land management practices in a warming world: Increasing potential sinks. In: Liebig, M.A., Franzluebbers, A.T., and Follett, R.F., editors. Managing Agricultural Greenhouse Gases. London, England: Academic Press. p. 487-504.
Conservation practices and their potential to mitigate climate change - (Abstract Only)
Hatfield, J.L., Parkin, T.B., Sauer, T.J., Prueger, J.H. 2011. Conservation practices and their potential to mitigate climate change. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting. Oct. 16-19, 2011, San Antonio, TX. CD-ROM.
Conservation practices and their potential to mitigate climate change - (Abstract Only)
Hatfield, J.L., Parkin, T.B., Sauer, T.J., Prueger, J.H. 2011. Conservation practices and their potential to mitigate climate change [abstract]. Soil and Water Conservation Society, July 17-20, 2011, Washington, DC. CD-ROM.
USDA-ARS Gracenet Project Protocols, Chapter 3. Chamber-Based Trace Gas Flux Measurements4 Reprint Icon - (Book / Chapter)
Parkin, T.B., Venterea, R.T. 2010. USDA-ARS GRACEnet Project Protocols, Chapter 3. Chamber-based trace gas flux measurements4. In: Follett, R.F., editor. Sampling Protocols. Beltsville, MD. Available at: http://www.ars.usda.gov/SP2UserFiles/Program/212/Chapter%203.%20GRACEnet%20Trace%20Gas%20Sampling%20Protocols.pdf. p. 1-39.
Impact of biochar on manure carbon stabilization and greenhouse gas emissions - (Peer Reviewed Journal) - (07-Dec-10)
The effect of enhanced-efficiency fertilizers on nitrous oxide emissions from various cropping systems Reprint Icon - (Abstract Only)
Halvorson, A.D., Del Grosso, S.J., Venterea, R.T., Rosen, C., Smith, J.L., Parkin, T.B., Hatfield, J.L., Sistani, K.R., Dell, C.J., Watts, D.B. 2010. The effect of enhanced-efficiency fertilizers on nitrous oxide emissions from various cropping systems. Meeting Abstract. p - see link above
Denitrification Activity, Wood Loss, and N2O Emissions Over 9 Years From a Wood Chip Bioreactor - (Peer Reviewed Journal)
Moorman, T.B., Parkin, T.B., Kaspar, T.C., Jaynes, D.B. 2010. Denitrification Activity, Wood Loss, and N2O Emissions Over 9 Years From a Wood Chip Bioreactor. Ecological Engineering. 36:1567-1574.
Influence of nitrapyrin on N2O losses from soil receiving fall-applied anhydrous ammonia Reprint Icon - (Peer Reviewed Journal)
Parkin, T.B., Hatfield, J.L. 2010. Influence of nitrapyrin on N2O losses from soil receiving fall-applied anhydrous ammonia. Agriculture, Ecosystems and Environment. 136:81-86.
Methane Flux in Cropland and Adjacent Riparian Buffers with Different Vegetation Covers Reprint Icon - (Peer Reviewed Journal)
Kim, D., Isenhart, T.M., Parkin, T.B., Schultz, R.C., Loynachan, T.E. 2010. Methane Flux in Cropland and Adjacent Riparian Buffers with Different Vegetation Covers. Journal of Environmental Quality. 39:97-105.
Cover Crop Effects on Nitrous Oxide Emission from a Manure-Treated Mollisol Reprint Icon - (Peer Reviewed Journal)
Jarecki, M.K., Parkin, T.B., Chan, A.S., Kaspar, T.C., Moorman, T.B., Singer, J.W., Kerr, B.J., Hatfield, J.L., Jones, R. 2009. Cover Crop Effects on Nitrous Oxide Emission from a Manure-Treated Mollisol. Agriculture, Ecosystems and Environment. 134(1-2):29-35.
Nitrous Oxide Emissions from a Bermudagrass Pasture: Interseeded Winter Rye and Poultry Litter Reprint Icon - (Peer Reviewed Journal)
Sauer, T.J., Compston, S.R., West, C.P., Hernandez Ramirez, G., Gbur, E.E., Parkin, T.B. 2009. Nitrous Oxide Emissions from a Bermudagrass Pasture in Arkansas: Poultry Litter and Interseeded Winter Rye. Soil Biology and Biochemistry. 41(7):1417-1424.
Denitrification in Wood Chip Bioreactors at Different Water Flows - (Peer Reviewed Journal)
Greenan, C., Moorman, T.B., Parkin, T.B., Kaspar, T.C., Jaynes, D.B. 2009. Denitrification in Wood Chip Bioreactors at Different Water Flows. Journal of Environmental Quality. 38:1664-1671.
Carbon dioxide emissions in fallow periods of a corn-soybean rotation: eddy-covariance versus chamber methods - (Abstract Only)
Hernandez Ramirez, G., Parkin, T.B., Hatfield, J.L., Sauer, T.J., Prueger, J.H. 2009. Carbon dioxide emissions in fallow periods of a corn-soybean rotation: eddy-covariance versus chamber methods [abstract]. North American Carbon Program Meeting (NACP)-February 17-20, 2009 in San Diego, CA. Available: http://www.nacarbon.org/cgi-bin/meeting_2009/mtg2009_ab_search.pl?action=3&ab_id=41
Energy Balance and Turbulent Flux Partitioning in a Corn-soybean Rotation in the Midwestern U.S. - (Peer Reviewed Journal)
Hernandez Ramirez, G., Hatfield, J.L., Parkin, T.B., Prueger, J.H., Sauer, T.J. 2010. Energy Balance and Turbulent Flux Partitioning in a Corn-soybean Rotation in the Midwestern U.S. Journal of Theoretical and Applied Climatology. 100:79-92.
Comparison of soil CO2 fluxes by eddy-covariance and chamber methods in fallow periods of a corn-soybean rotation - (Proceedings)
Hernandez Ramirez, G., Parkin, T.B., Hatfield, J.L., Sauer, T.J., Prueger, J.H. 2008. Comparison of soil CO2 fluxes by eddy-covariance and chamber methods in fallow periods of a corn-soybean rotation [abstract]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, October 5-8, 2008, Houston, TX. CD-ROM
Greenhouse gas emission in dependence on soil structure, and nitrogen and carbon availability - (Abstract Only)
Jarecki, M., Parkin, T.B., Chan, A., Hatfield, J.L., Jones, R. 2008. Greenhouse Gas Emission in Dependence on Soil Structure, and Nitrogen and Carbon Availability, [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, October 5-9, 2008, Houston, TX.
Greenhouse Gas Emission from Corn Rotations and Perennial Grasses in Iowa Grown for Biofuel Production - (Abstract Only)
Jarecki, M., Parkin, T.B., Chan, A., Hatfield, J.L., Jones, R. 2008. Greenhouse Gas Emission from Corn Rotations and Perennial Grasses in Iowa Grown for Biofuel Production, [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, October 5-9, 2008, Houston, TX.
Nitrous Oxide Emissions from Riparian Forest Buffers, Warm-Season and Cool-Season Grass Filters, and Crop Fields Reprint Icon - (Peer Reviewed Journal)
Kim, D., Isenhart, T.M., Parkin, T.B., Schultz, R.C., Loynachan, T.E., Raich, J.R. 2009. Nitrous Oxide Emissions from Riparian Forest Buffers, Warm-Season and Cool-Season Grass Filters, and Crop Fields. Biogeosciences. 6:607-650.
Comparison of DAYCENT-Simulated and Measured Nitrous Oxide Emission from a Corn Field - (Peer Reviewed Journal)
Jarecki, M.K., Parkin, T.B., Chan, A.K., Hatfield, J.L., Jones, R. 2008. Comparison of DAYCENT-Simulated and Measured Nitrous Oxide Emission from a Corn Field. Journal of Environmental Quality. 37:1685-1690.
Effect of Sampling Frequency on Estimates of Cumulative N20 Emissions - (Peer Reviewed Journal)
Parkin, T.B. 2008. Effect of Sampling Frequency on Estimates of Cumulative N20 Emissions. Journal of Environmental Quality. 37:1390-1395.
Potential Methods for Reducing Nitrate Losses in Artificially Drained Fields - (Peer Reviewed Journal)
Jaynes, D.B., Kaspar, T.C., Moorman, T.B., Parkin, T.B. 2008. Potential Methods for Reducing Nitrate Losses in Artificially Drained Fields. Journal of Environmental Quality. 37:429-436.
A subsurface, closed-loop system for soil carbon dioxide and its application to the gradient efflux approach - (Peer Reviewed Journal)
De Sutter, T.M., Sauer, T.J., Parkin, T.B., Heitman, J.L. 2008. A subsurface, closed-loop system for soil carbon dioxide and its application to the gradient efflux approach. Soil Science Society of America Journal. 72:126-134.
Greenhouse gases emission from two soils under N fertilizer and swine slurry - (Peer Reviewed Journal)
Jarecki, M.K., Parkin, T.B., Chan, A.S., Hatfield, J.L., Meek, D.W., Jones, R. 2008. Greenhouse gases emission from two soils under N fertilizer and swine slurry. Journal of Environmental Quality. 37:1432-1438.
Rye Cover Crop and Gamagrass Strip Effects on NO3 Concentration and Load in Tile Drainage - (Peer Reviewed Journal)
Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B. 2007. Rye Cover Crop and Gamagrass Strip Effects on NO3 Concentration and Load in Tile Drainage. Journal of Environmental Quality. 36(5):1503-1511.
CO2 and H2O Vapor Exchanges across Growing Seasons in Rainfed Corn-Soybean Systems - (Abstract Only)
Prueger, J.H., Hatfield, J.L., Parkin, T.B., Sauer, T.J. 2007. CO2 and H20 vapor exchanges across growing seasons in rainfed corn-soybean systems [abstract]. 4th USDA Greenhouse Gas Conference, February 5-8, 2007, Baltimore, Maryland. CD-ROM.
Gas and Water Vapor Exchanges in Rainfed Corn-Soybean Systems - (Abstract Only)
Prueger, J.H., Hatfield, J.L., Parkin, T.B., Sauer, T.J. 2007. Gas and Water Vapor Exchanges in Rainfed Corn-Soybean Systems [abstract]. NACP Investigators Meeting, January 22-26, 2007, Colorado Springs, Colorado. CD-ROM.
Soil Respiration in Response to Landscape Position - (Abstract Only)
Desutter, T.M., Parkin, T.B., Kaspar, T.C., Sauer, T.J., Hatfield, J.L. 2006. Soil Respiration in Response to Landscape Position [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 12-16, 2006, Indianapolis, IN.
Gracenet (Greenhouse Gas Reduction Through Agricultural Carbon Enhancement Network): An Assessment of Soil Carbon Sequestration and Greenhouse Gas Mitigation by Agricultural Management - (Abstract Only)
Stott, D.E., Cavigelli, M.A., Dell, C.J., Del Grosso, S.J., Follett, R.F., Franzluebbers, A.J., Johnson, J.M., Liebig, M.A., Parkin, T.B., Smith, J.L. 2007. GRACEnet (Greenhouse Gas Reduction through Agricultural Carbon Enhancement network): an assessment of soil carbon sequestration and greenhouse gas mitigation by agricultural management. 4th USDA Greenhouse Gas Symposium, February 5-8, 2007, Baltimore, Maryland. 2007 CDROM.
Field Comparison of Methods for Measuring Soil CO2 Flux - (Abstract Only)
Parkin, T.B., De Sutter, T.M., Prueger, J.H., Kaspar, T.C., Sauer, T.J. 2006. Field Comparison of Methods for Measuring Soil CO2 Flux [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 12-16, 2006, Indianapolis, IN.
Field measurement results versus DAYCENT simulations in nitrous oxide emission from agricultural soil in Central Iowa - (Abstract Only)
Jarecki, M.K., Parkin, T.B., Chan, A., Kaspar, T.C., Hatfield, J.L., Jones, R.A. 2006. Field measurement results versus DAYCENT simulations in nitrous oxide emission from agricultural soil in Central Iowa [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 12-16, 2006, Indianapolis, IN.
Effect of cover crop in mitigation of greenhouse gases emission from plots amended with swine manure - (Abstract Only)
Jarecki, M.K., Parkin, T.B., Chan, A., Moorman, T.B., Singer, J.W., Hatfield, J.L., Meek, D.W., Jones, R.A. 2006. Effect of cover crop in mitigation of greenhouse gases emission from plots amended with swine manure [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 12-16, 2006, Indianapolis, IN.
Cover Crop Effects on the Fate of Swine Manure-N Applied to Soil - (Abstract Only)
Kaspar, T.C., Parkin, T.B., Singer, J.W. 2006. Cover Crop Effects on the Fate of Swine Manure-N Applied to Soil [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 12-16, 2006, Indianapolis, IN.
Role of Micrometeorological Methods to Quantify Greenhouse Gas Fluxes in Agricultural Systems - (Abstract Only)
Hatfield, J.L., Prueger, J.H., Parkin, T.B., Sauer, T.J., Desutter, T.M. 2006. Role of micrometeorological methods to quantify greenhouse gas fluxes in agricultural systems [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 12-16, 2006, Indianapolis, IN.
Emission of the Greenhouse Gas Nitrous Oxide (N2O) from Riparian Forest Buffers, Warm-Season and Cool-Season Grass Filters and Crop Fields - (Abstract Only)
Kim, D., Schultz, R.C., Isenhart, T.M., Parkin, T.B., Raich, J.W., Loynachan, T.E. 2006. Emission of the Greenhouse Gas Nitrous Oxide (N2O) from Riparian Forest Buffers, Warm-Season and Cool-Season Grass Filters and Crop Fields [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 12-16, 2006, Indianapolis, IN.
In-Field Bioreactor for Removing Nitrate from Tile Drainage - (Abstract Only)
Jaynes, D.B., Kaspar, T.C., Moorman, T.B., Parkin, T.B. 2006. In-Field Bioreactor for Removing Nitrate from Tile Drainage [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 12-16, 2006, Indianapolis, IN.
Nitrous Oxide Emissions from Corn/soybean Systems in the Midwest - (Peer Reviewed Journal)
Parkin, T.B., Kaspar, T.C. 2006. Nitrous oxide emissions from corn/soybean systems in the Midwest. Journal of Environmental Quality. 35:1496-1506.
Greenhouse Gas Reduction Through Agricultural Carbon Enhancement Network (Gracenet)-Progress Report - (Other)
Follett, R.F., Johnson, J.M., Parkin, T.B., Smith, J.L., Franzluebbers, A.J., Sainju, U.M., Zobeck, T.M., Collins, H.P., Mikha, M.M. 2006. Greenhouse gas reduction through agricultural carbon enhancement network (gracenet)-progress report. Agricultural Research Service Publication.
Cover Crop Effects on the Fate of Swine Manure-N Applied to Soil - (Peer Reviewed Journal)
Parkin, T.B., Kaspar, T.C., Singer, J.W. 2006. Cover crop effects on the fate of swine manure-N applied to soil. Plant and Soil Journal. 289:141-152.
Agricultural Exhaust: a Reason to Invest in Soil - (Peer Reviewed Journal)
Franzluebbers, A.J., Follett, R.F., Johnson, J.M., Liebig, M.A., Gregorich, E.G., Parkin, T.B., Smith, J.L., Del Grosso, S.J., Jawson, M.D., Martens, D.A. 2006. Agricultural exhaust: a reason to invest in soil. Journal of Soil and Water Conservation. 61(3):98A-101A.
Porous Tubing for Use in Monitoring Soil Co2 Concentrations - (Peer Reviewed Journal)
Desutter, T.M., Sauer, T.J., Parkin, T.B. 2006. Porous tubing for use in monitoring soil CO2 concentrations. Soil Biology and Biochemistry. 38:2676-2681.
Examining Changes in Soil Organic Carbon with Oat and Rye Cover Crops Using Terrain Covariates - (Peer Reviewed Journal)
Kaspar, T.C., Parkin, T.B., Jaynes, D.B., Cambardella, C.A., Meek, D.W., Jung, Y.S. 2006. Examining changes in soil organic carbon with oat and rye cover crops using terrain covariates. Soil Science Society of America Journal. 70:1168-1177.
Manure Composition of Swine As Affected by Dietary Protein and Cellulose Concentration - (Peer Reviewed Journal)
Kerr, B.J., Ziemer, C.J., Trabue, S.L., Crouse, J.D., Parkin, T.B. 2006. Manure composition of swine as affected by dietary protein and cellulose concentration. Journal of Animal Science. 84:1584-1592.
Effects of a Rye Cover Crop and a Permanent Gamagrass Strip on Nitrate Load in Tile Drainage - (Abstract Only)
Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B. 2005. Effects of a rye cover crop and a permanent gamagrass strip on nitrate load in tile drainage [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 6-10, 2005, Salt Lake City, UT.
Continuous, Long-Term Measurement of Soil Carbon Dioxide Fluxes Using Porous Tubing - (Abstract Only)
Desutter, T.M., Sauer, T.J., Parkin, T.B. 2005. Continuous, long-term measurement of soil carbon dioxide fluxes using porous tubing [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 6-10, 2005, Salt Lake City, UT.
Comparing Carbon Substrates for Denitrification of Subsurface Drainage Water - (Peer Reviewed Journal)
Greenan, C.M., Moorman, T.B., Kaspar, T.C., Parkin, T.B., Jaynes, D.B. 2006. Comparing carbon substrates for denitrification of subsurface drainage water. Journal of Environmental Quality. 35:824-829.
Tower and Aircraft Eddy Covariance Measurements of Water Vapor, Energy and Carbon Dioxide Fluxes During Smacex - (Peer Reviewed Journal)
Prueger, J.H., Hatfield, J.L., Kustas, W.P., Hipps, L.E., Macpherson, J.I., Neale, C., Eichinger, W.E., Cooper, D.I., Parkin, T.B. 2005. Tower and aircraft eddy covariance measurements of water vapor, energy and carbon dioxide fluxes during SMACEX. Journal of Hydrometeorology. 6:954-960.
Phosphorus Geochemistry in Groundwater in the Clear Lake Watershed, North-Central Iowa - (Abstract Only) - (20-May-05)
Bacterial Activity, Community Structure, and Degree of Spatial Hererogeneity on the Small Scale at a Long-Term Contaminated Site - (Peer Reviewed Journal)
Becer, J.M., Parkin, T.B., Nakastu, C.H., Wilbur, J., Konopka, A. 2006. Bacterial activity, community structure, and degree of spatial hererogeneity on the small scale at a long-term contaminated site. Microbial Ecology. 51(2):220-231.
Relationship of Soil Respiration to Crop and Landscape in the Walnut Creek Watershed - (Peer Reviewed Journal)
Parkin, T.B., Kaspar, T.C., Senwo, Z., Prueger, J.H., Hatfield, J.L. 2005. Relationship of soil respiration to crop and landscape in the Walnut Creek watershed. Journal of Hydrometeorology. 6(6):812-824.
Filling Data Gaps in Soil Respiration Measurements Using Autocorrelation - (Abstract Only)
Parkin, T.B., Kaspar, T.C. 2005. Filling data gaps in soil respiration measurements using autocorrelation. USDA Greenhouse Gas Symposium. http://soilcarboncenter.k-state.edu/conference/Abstract_Pages.htm
Nitrous Oxide Emissions from Midwest Corn/soybean Cropping Systems - (Abstract Only)
Parkin, T.B., Kaspar, T.C. 2005. Nitrous oxide emissions from midwest corn/soybean cropping systems. USDA Greenhouse Gas Symposium. http://soilcarboncenter.k-state.edu/conference/Abstract_Pages.htm.
Role of Organic Carbon from Surficial Aquitards in Limiting Degradation of Water Quality in the Midwest Corn Belt - (Abstract Only) - (10-Nov-04)
Soil Co2 Flux on a Hillslope Transect in Relation to Terrain Variables, Soil Texture, Soil Om, and Residue Inputs - (Abstract Only)
Kaspar, T.C., Parkin, T.B. 2004. Soil CO2 Flux on a Hillslope Transect in Relation to Terrain Variables, Soil Texture, Soil OM, and Residue Inputs [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts. Madison, Wisconsin.
Gracenet: Greenhouse Gas Reduction Through Agricultural Carbon Enhancement Network - (Peer Reviewed Journal)
Jawson, M.D., Shafer, S.R., Franzluebbers, A.J., Parkin, T.B., Follett, R.F. 2005. Gracenet: Greenhouse gas reduction through agricultural carbon enhancement network. International Journal of Soil and Tillage Research. 83:167-172.
Impact of Nitrogen Fertilization and Cropping System on Carbon Sequestration in Mid-Western Corn Belt Mollisols - (Peer Reviewed Journal)
Russell, A.R., Laird, D.A., Parkin, T.B., Mallarino, A. 2005. Impact of nitrogen fertilization and cropping system on carbon sequestration in mid-western corn belt mollisols. Soil Science Society of America Journal. 69(2):413-422.
Beyond Fertilizer Management: in-Field Approaches for Reducing Nitrate Loads Coming from Agricultural Drainage Tiles - (Abstract Only)
Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B. 2004. Beyond fertilizer management: in-field approaches for reducing nitrate loads coming from agricultural drainage tiles [abstract]. Final Program Book of Abstracts, The Ninth Biennial Conference Minnesota Water 2004: Policy and Planning to Ensure Minnesota's Water Supplies. Minneapolis, MN. p. 70.
Potential Methods for Reducing Nitrate Losses in Artificially Drained Fields - (Proceedings)
Jaynes, D.B., Kaspar, T.C., Moorman, T.B., Parkin, T.B. 2004. Potential methods for reducing nitrate losses in artificially drained fields. International Drainage Symposium. VIII:p. 59-69.
Temporal Variability of Soil C02 Flux: Effect of Sampling Frequency on Cumulative Carbon Loss Estimation - (Peer Reviewed Journal)
Parkin, T.B., Kaspar, T.C. 2004. Temporal variability of soil C02 flux: effect of sampling frequency on cumulative carbon loss estimation. Soil Science Society of America Journal. 68(4):1234-1241.
Recreating Natural Riparian Buffers in Agroecosystems - (Abstract Only)
Schultz, R.C., Isenhart, T., Simpkins, W.W., Colletti, J., Raich, J., Mickelson, T., Cambardella, C.A., Parkin, T.B. 2003. Recreating natural riparian buffers in agroecosystems [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts. Madison, Wisconin.
Changes in Soil Carbon Response to Year, Previous Crop, and Cover Crop - (Abstract Only)
KASPAR, T.C., PARKIN, T.B., JAYNES, D.B. CHANGES IN SOIL CARBON RESPONSE TO YEAR, PREVIOUS CROP, AND COVER CROP. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2003. CD-ROM. MADISON, WI.
Stimulation of Denitrification and Nitrate Removal from Subsurface Drainage Water - (Abstract Only)
MOORMAN, T.B., PARKIN, T.B., JAYNES, D.B., KASPAR, T.C. STIMULATION OF DENITRIFICATION AND NITRATE REMOVAL FROM SUBSURFACE DRAINAGE WATER. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2003. CD-ROM. MADISON, WI.
Carbon Dioxide Dynamics During a Growing Season in Midwestern Cropping Systems - (Peer Reviewed Journal)
Prueger, J.H., Hatfield, J.L., Parkin, T.B., Kustas, W.P., Kaspar, T.C. 2003. Carbon Dioxide Dynamics During a Growing Season in Midwestern Cropping Systems. Environmental Management. 33(1):330-343.
Temperature Controls on Diurnal Co2 Flux: Implications for Estimating Soil C Loss - (Peer Reviewed Journal)
PARKIN, T.B., KASPAR, T.C. 2003. TEMPERATURE CONTROLS ON DIURNAL CO2 FLUX: IMPLICATIONS FOR ESTIMATING SOIL C LOSS. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL. 67:1763-1772.
Species, Rotation-Length, and Life-Form-Diversity Effects on Soil Carbon in Experimental Tropical Ecosystems - (Peer Reviewed Journal)
RUSSELL, A.E., CAMBARDELLA, C.A., EWEL, J.J., PARKIN, T.B. SPECIES, ROTATION-LENGTH, AND LIFE-FORM-DIVERSITY EFFECTS ON SOIL CARBON IN EXPERIMENTAL TROPICAL ECOSYSTEMS. ECOLOGICAL APPLICATIONS. 2004. V. 14(1). P. 47-60.
Denitrification-Based Removal of Nitrate from Subsurface Drainage Water - (Abstract Only) - (14-May-03)
Impact of Sampling Frequency on Soil Co2 Flux Estimation - (Abstract Only)
PARKIN, T.B., KASPAR, T.C. IMPACT OF SAMPLING FREQUENCY ON SOIL CO2 FLUX ESTIMATION. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2002. CD-ROM. MADISON, WI.
Subsurface Drainage Modifications to Reduce Nitrate Losses in Drainage - (Proceedings)
JAYNES, D.B., KASPAR, T.C., MOORMAN, T.B., PARKIN, T.B. SUBSURFACE DRAINAGE MODIFICATIONS TO REDUCE NITRATE LOSSES IN DRAINAGE. ASAE ANNUAL INTERNATIONAL MEETING. 2002. PAPER NO. 02-2015.
Oat Plant Effects on Net Nitrogen Mineralization - (Peer Reviewed Journal)
PARKIN, T.B., KASPAR, T.C., CAMBARDELLA, C.A. OAT PLANT EFFECTS ON NET NITROGEN MINERALIZATION. PLANT AND SOIL JOURNAL. 2002. V. 243. P. 187-195.
Small Grain Cover Crops for Iowa - (Proceedings)
KASPAR, T.C., PARKIN, T.B., KOHLER, K.A. SMALL GRAIN COVER CROPS FOR IOWA. INTEGRATED CROP MANAGEMENT CONFERENCE PROCEEDINGS. 2001. P. 85-89.
Temporal Variability of Soil Respiration - (Abstract Only)
PARKIN, T.B., KASPAR, T.C. TEMPORAL VARIABILITY OF SOIL RESPIRATION. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2001. CD-ROM. MADISON, WI.
Spatial and Temporal Variability of Soil Carbon - (Abstract Only)
KASPAR, T.C., PARKIN, T.B., CAMBARDELLA, C.A., KARLEN, D.L., TOMER, M.D. SPATIAL AND TEMPORAL VARIABILITY OF SOIL CARBON. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2001. CD-ROM. MADISON, WI.
Methane Oxidation and Production Activity in Soils from Natural and Agricultural Ecosystems - (Peer Reviewed Journal)
CHAN, A.S., PARKIN, T.B. METHANE OXIDATION AND PRODUCTION ACTIVITY IN SOILS FROM NATURAL AND AGRICULTURAL ECOSYSTEMS. JOURNAL OF ENVIRONMENTAL QUALITY. 2001. V. 30. P. 1896-1903.
Nitrous Oxide Emissions from Poultry Litter-Amended Bermudagrass Pastures - (Proceedings)
Compston, S.R., West, C.P., Sauer, T.J., Parkin, T.B. 2001. Nitrous oxide emissions from poultry litter-amended bermudagrass pastures. American Forage and Grassland Conference Proceedings. 10:126-130.
N Management and Hypoxia: a Research Focus of the USDA-ARS National Soil Tilth Laboratory - (Abstract Only)
Dinnes, D.L., Jaynes, D.B., Hatfield, J.L., Burkart, M.R., Parkin, T.B., Cambardella, C.A., Karlen, D.L., Colvin, T.S., Kaspar, T.C., James, D.E. 2001. N management and hypoxia: A research focus of the USDA-ARS National Soil Tilth Laboratory. Farm Bureau Members National Convention. American Farm Bureau Federation, Washington, D.C.
Impact of Land Use on Methane Flux from Soil - (Peer Reviewed Journal) - (17-Nov-00)
Using the Weight-Loss-on-Ignition Method to Measure Spatial Variability of Soil Carbon - (Abstract Only) - (09-Nov-00)
Automated gas sampling system for laboratory analysis of CH4 and N2O - (Peer Reviewed Journal)
Arnold, S.L., Parkin, T.B., Doran, J.W., Mosier, A.R. 2001. Automated gas sampling system for laboratory analysis of CH4 and N2O. Communications in Soil Science and Plant Analysis 32:2795-2807.
Evaluation of Potential Inhibitors of Methanogenesis and Methane Oxidation in Soil - (Peer Reviewed Journal) - (01-Mar-00)
Gaseous Nitrogen Emissions from Anerobic Swine-Lagoons: Ammonia, Nitrous Oxide, and Dinitrogen Gas - (Peer Reviewed Journal) - (27-Dec-99)
Decomposition of Buried Root Residues in the Field - (Abstract Only) - (04-Nov-99)
Oat and Rye Root Decomposition Effects on Nitrogen Mineralization - (Peer Reviewed Journal) - (12-Jul-99)
Nitrate-Nitrogen Loads in Subsurface Drained Soils in Central Iowa - (Abstract Only) - (11-Jun-99)
Microbial Nitrogen Transformations in Earthworm Burrows - (Peer Reviewed Journal) - (19-May-99)
Sediment As a Carbon Source for the Submersed Macrophyte Vallisneria - (Peer Reviewed Journal) - (12-May-99)
Plant Effects on Nitrogen Mineralization - (Abstract Only) - (22-Oct-98)
Oat and Rye Root Decomposition Effects on Carbon and Nitrogen Cycling in a Controlled Environment - (Abstract Only) - (22-Oct-98)
Fungal Presence in Paired Cultivated and Uncultivated Soils in Central Iowa - (Peer Reviewed Journal) - (10-Aug-98)
Water Quality in Walnut Creek Watershed: Nitrate-Nitrogen in Soils, Subsurface Drainage Water and Shallow Groundwater - (Peer Reviewed Journal) - (29-Jul-98)
Reduced Co2 Release from Wheat Straw under N-Limiting Conditions: Simulation of Carbon Turnover - (Peer Reviewed Journal) - (15-Mar-98)
Preliminary Hydrogeologic Characterization of a Riparian Management System in Central Iowa - (Abstract Only) - (08-Dec-97)
Comparison of Chamber and Micromet Methods for Determining Methane Flux from Peatland Soil - (Peer Reviewed Journal) - (18-Jul-97)
In-Situ Denitrification Rate Measurement in Saturated Soils by Acetylene Block - (Peer Reviewed Journal) - (10-Jul-97)
Acetylene Transport in Saturated Soil Mesocosm for in Situ Denitrification Rate Measurement - (Peer Reviewed Journal) - (08-Jul-97)
Using Small Grain Cover Crops to Manage Nitrogen in the Midwest - (Abstract Only) - (08-Nov-96)
Impact of Swine Manure on Methanotrophic and Methanogenic Activity in Soils - (Abstract Only) - (08-Nov-96)
Confining Units Are Not Created Equal: Quaternary History and Its Control on Physical and Biogeochemical Processes - (Abstract Only) - (31-Oct-96)
Relationship of Soil Ergosterol Concentration and Fungal Biomass - (Peer Reviewed Journal) - (09-Jul-96)
Soil Property Contributions to Yield Variation Patterns - (Abstract Only) - (26-Jun-96)
Soil Property Contributions to Yield Variation Patterns - (Proceedings) - (26-Jun-96)
Impact of Crp on Soil Quality - (Book / Chapter) - (01-Jun-96)
Quantitative Indicators of Soil Quality: a Minimum Data Set - (Book / Chapter) - (24-May-96)
Ch4 Flux Estimates from Natural and Agricultural Ecosystems - (Abstract Only) - (03-Nov-95)
Field and Laboratory Tests of Soil Respiration - (Book / Chapter) - (23-Aug-95)
Subsurface Geology: a Key to Understanding Water Quality Problems - (Proceedings) - (05-Jan-95)
Soil Quality Research at the National Soil Tilth Laboratory - (Abstract Only) - (05-Aug-94)
Last Modified: 3/13/2012
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