Projects

ENHANCED MIDWESTERN CROPPING SYSTEMS FOR SUSTAINABILITY AND ENVIRONMENTAL QUALITY Appropriated (D)   Accession Number: 414264

ENHANCING FARMLAND WATER QUALITY & AVAILABILITY THROUGH SOIL-BUILDING CROP ROTATIONS & ORGANIC PRACTICES Reimbursable (R)   Accession Number: 419534

EFFECT OF COVER CROPS, SOIL AMENDMENTS, AND REDUCED TILLAGE ON CARBON SEQUESTRATION AND SOIL HEALTH IN A LONG-TERM ORGANIC VEGETABLE SYSTEM Reimbursable (R)   Accession Number: 420838

THE USE OF DATA MINING TO GENERATE A SOIL DYNAMIC PROPERTY (DSP) DATABASE Reimbursable (R)   Accession Number: 422942

DETERMINING MAXIMUM SUSTAINABLE PRODUCTION OF BIOMASS WITH MIXTURE OF PRAIRIE SPECIES Reimbursable (R)   Accession Number: 413497

Publications (Clicking on the reprint icon will take you to the publication reprint.)

A soil quality assessment of a Vertisol after 57 years of agricultural and pasture management - (Peer Reviewed Journal)

Stott, D.E., Karlen, D.L., Harmel, R.D., Cambardella, C.A. 2013. A soil quality assessment of a Vertisol after 57 years of agricultural and pasture management. Soil Science Society of America Journal. 77(3):903-913. DOI: 10.2136/sssaj2012.0355.

Thirty-year tillage effects on crop yield and soil fertility indicators - (Peer Reviewed Journal)

Karlen, D.L., Kovar, J.L., Cambardella, C.A., Colvin, T.S. 2013. Thirty-year tillage effects on crop yield and soil fertility indicators. Soil & Tillage Research. 130:24-41.

Crop and soil responses to using corn stover as a bioenergy feedstock: Observations from the Northern US Corn Belt - (Peer Reviewed Journal)

Johnson, J.M., Acosta Martinez, V., Cambardella, C.A., Barbour, N.W. 2013. Crop and soil responses to using corn stover as a bioenergy feedstock: Observations from the Northern US Corn Belt. Agriculture. 3:72-89.

Rye cover crop effects on soil properties in no-till corn silage/soybean agroecosystems - (Abstract Only)

Moore, E., Kaspar, T.C., Wiedenhoeft, M., Cambardella, C.A. 2012. Rye cover crop effects on soil properties in no-till corn silage/soybean agroecosystems. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting. Oct. 21-24, 2012, Cincinnati, OH. Available: https://www.acsmeetings.org/meetings.

The long-term agroecological research (LTAR) experiment supports organic yields, soil quality, and economic performance - (Peer Reviewed Journal) - (20-Sep-12)

Organic vegetable research: Twenty years of progress - (Abstract Only)

Delate, K., Cambardella, C.A. 2012. Organic vegetable research: Twenty years of progress. American Society of Horticulture Science Meeting. 47(9):S78 HortScience Supp.

Quantifying the linkages among soil health, organic farming, and food - (Abstract Only)

Cambardella, C.A. 2012. Quantifying the linkages among soil health, organic farming, and food. American Society of Agronomy Annual Meetings [abstracts], Oct. 21-24, 2012, Cincinnati, OH. CD-ROM.

Organic no-till production for grain crops in Iowa: Effects on crop productivity and soil quality - (Abstract Only)

Delate, K., Cambardella, C.A. 2012. Organic no-till production for grain crops in Iowa: Effects on crop productivity and soil quality. American Society of Agronomy Annual Meetings [abstracts], Oct. 21-24, 2012, Cincinnati, OH. CD-ROM.

Synchrony of net nitrogen mineralization and maize nitrogen uptake following applications of composted and fresh swine manure in the Midwest U.S. - (Peer Reviewed Journal)

Loecke, T.D., Cambardella, C.A., Liebman, M. 2012. Synchrony of net nitrogen mineralization and maize nitrogen uptake following applications of composted and fresh swine manure in the Midwest U.S. Nutrient Cycling in Agroecosystems. 93:65–74. DOI:10.1007/s10705-012-9500-6.

Soil properties following reforestation or afforestation of marginal cropland - (Peer Reviewed Journal)

Sauer, T.J., James, D.E., Cambardella, C.A., Hernandez-Ramirez, G. 2012. Soil properties following reforestation or afforestation of marginal cropland. Plant and Soil. Available: http://www.springerlink.com/openurl.asp?genre=article&id=doi:10.1007/s11104-012-1258-8.

Soil carbon sequestration in central USA agroecosystems - (Book / Chapter)

Cambardella, C.A., Johnson, J.M., Varvel, G.E. 2012. Soil carbon sequestration in central USA agroecosystems. In Liebig, M.A., Franzluebbers, A.J., Follett, R.F., editors. Managing Agricultural Greenhouse Gases: Coordinated Agricultural Research through GRACEnet to Address our Changing Climate. San Diego, CA: Elsevier Publ. p. 41-58.

Quantities and qualities of physical and chemical fractions of soil organic matter under a rye cover crop - (Abstract Only)

Olk, D.C., Cambardella, C.A., Kaspar, T.C. 2011. Quantities and qualities of physical and chemical fractions of soil organic matter under a rye cover crop. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting. Oct. 16-19, 2011, San Antonio, TX. CD-ROM.

Soil quality changes with organic no-till production - (Abstract Only)

Weyers, S.L., Cambardella, C.A. 2011. Soil quality changes with organic no-till production [abstract][CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts. ASA-CSSA-SSSA Annual Meeting. Oct. 16-19, 2011, San Antonio, TX.

Organic farming: Impacts on soil, food, and human health - (Book / Chapter)

Carr, P.M., Delate, K., Zhao, X., Cambardella, C.A., Carr, P.L., Heckman, J.R. 2012. Organic farming: Impacts on soil, food, and human health. In: Brevik, E.C. and Burgess, L., editors. Soils and Human Health. New York, NY: Taylor & Francis. p. 241-254.

Human relations with soil are changing rapidly: SSSA's new Work Group on Soil Change - (Peer Reviewed Journal)

De B Richter, D., Andrews, S.S., Billings, S., Cambardella, C.A., Cavallaro, N., De Meester, J., Franzluebbers, A.J., Glasener, K., Grandy, S., Grunwald, S., Gruver, J., Hartshorn, A.S., Janzen, H., Kramer, M., Ladha, J.K., Lajtha, K., Liles, G., Markewitz, D., Megonigal, P.J., Mermut, A., Palm, C., Rasmussen, C., Richardson, C.J., Robinson, D.A., Smith, P., Stiles, C., Tate, R.L., Thompson, A., Tugel, A.J., Van Es, H., West, L., Wills, S., Yaalon, D., Zobeck, T.M. 2011. Human relations with soil are changing rapidly: SSSA's new Work Group on Soil Change. Soil Science Society of America Journal. 75:2079-2084.

Use of legume manures as nitrogen sources for corn production - (Peer Reviewed Journal)

Liebman, M., Graef, R., Nettleton, D., Cambardella, C.A. 2011. Use of legume manures as nitrogen sources for corn production. Renewable Agriculture and Food Systems. p. 1-12. Available: http://dx.doi.org/10.1017/S1742170511000299.

A soil quality assessment within the Iowa River South Fork Watershed - (Peer Reviewed Journal)

Stott, D.E., Cambardella, C.A., Wolf, R., Tomer, M.D., Karlen, D.L. 2011. A soil quality assessment within the Iowa River South Fork Watershed. Soil Science Society of America Journal. 75:2271-2282.

Carbon dynamics in agricultural systems - (Book / Chapter)

Cambardella, C.A., Hatfield, J.L. 2013. Carbon dynamics in agricultural systems. In: Brown, D.G., French, N.H.F., Reed, B.C., and Robinson, D.T., editors. Soil Carbon Dynamics in Agricultural Systems. New York, NY: Cambridge University Press. p. 381-402.

Impact of 57 years of management on the soil quality of a Vertisol in Central Texas - (Abstract Only) - (30-Apr-11)

Soil organic carbon under pasture management - (Book / Chapter)

Franzluebbers, A.J., Owens, L.B., Sigua, G.C., Cambardella, C.A., Haney, R.L. 2012. Soil organic carbon under pasture management. In: Liebig, M.A., Franzluebbers, A.J., Follett, R.F., editors. Managing Agricultural Greenhouse Gases: Coordinated Agricultural Research through GRACEnet to Address our Changing Climate. Amsterdam, Netherlands: Elsevier. p. 93-110.

Solid-state NMR analysis of soil organic matter fractions from integrated physical-chemical extraction - (Peer Reviewed Journal)

Cao, X., Olk, D.C., Chappell, M., Cambardella, C.A., Miller, L.F., Mao, J. 2011. Solid-state NMR analysis of soil organic matter fractions from integrated physical-chemical extraction. Soil Science Society of America Journal. 75(4):1374-1384.

Soil, water, and greenhouse-gas impacts of alternative biomass cropping systems - (Abstract Only)

Schulte Moore, L., Back, E., Cambardella, C.A., Hargreaves, S., Helmers, M., Hofmockel, K., Isenhart, T., Kolka, R., Ontl, T., Walsh, W., Williams, R. 2010. Soil, water, and greenhouse-gas impacts of alternative biomass cropping systems [abstract]. American Geophysical Union. San Francisco, CA, December 13-17, 2010. Abstract B22D-04.

Seasonal Shifts in the Biochemical Compoments of the Light Fraction, Particulate Organic Matter, and Two Humic Acid Fractions in An Iowa Soil - (Abstract Only)

Olk, D.C., Cambardella, C.A., Kaspar, T.C. 2010. Seasonal Shifts in the Biochemical Compoments of the Light Fraction, Particulate Organic Matter, and Two Humic Acid Fractions in An Iowa Soil. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting. Oct. 31 - Nov. 4, 2010, Long Beach, CA. CD-ROM.

Changes in soil respiration across a chronosequence of tallgrass prairie reconstructions - (Peer Reviewed Journal)

Maher, R.M., Asbjornson, H., Kolka, R., Cambardella, C.A., Raich, J.W. 2010. Changes in soil respiration across a chronosequence of tallgrass prairie reconstructions. Agriculture, Ecosystems and Environment. Available: http://dx.doi.org/10.1016/j.agee.2010.09.009.

Swine manure injection with a low-disturbance applicator and cover crops reduce phosphorus losses in runoff - (Peer Reviewed Journal)

Kovar, J.L., Moorman, T.B., Singer, J.W., Cambardella, C.A., Tomer, M.D. 2011. Swine manure injection with a low-disturbance applicator and cover crops reduce phosphorus losses in runoff. Journal of Environmental Quality. 40:329-336.

Carbon sources and dynamics in afforested and cultivated US corn belt soils - (Proceedings)

Hernandez Ramirez, G., Sauer, T.J., Cambardella, C.A., Brandle, J.R., James, D.E. 2010. Carbon sources and dynamics in afforested and cultivated US corn belt soils. In: Gilkes, R.J. and Prakongkep, N., editors. Proceedings of the 19th World Congress of Soil Science, Aug. 6-10, 2010, Brisbane, Australia. DVD.

US Policy approaches for assessing soil health - (Proceedings)

Andrews, S.S., Wander, M.M., Widman, N., Cambardella, C.A., Mitchell, J.P. 2010. US Policy approaches for assessing soil health. In: Gilkes, R.J. and Prakongkep, N., editors. Proceedings of the 19th World Congress of Soil Science, Aug. 6-10, 2010, Brisbane, Australia. DVD.

Groundwater nutrient concentrations during prairie reconstruction on an Iowa landscape - (Peer Reviewed Journal)

Tomer, M.D., Schilling, K.E., Cambardella, C.A., Jacobson, P., Drobney, P. 2010. Groundwater nutrient concentrations during prairie reconstruction on an Iowa landscape. Agriculture, Ecosystems and Environment. 139:206-213.

Carbon sources and dynamics in afforested and cultivated corn belt soils - (Peer Reviewed Journal)

Hernandez-Ramirez, G., Sauer, T.J., Cambardella, C.A., Brandle, J.R., James, D.E. 2011. Carbon sources and dynamics in afforested and cultivated corn belt soils. Soil Science Society of America Journal. 75:216-225.

Effects of Prairie Reconstruction on Soil-Water and Groundwater Nutrient Concentrations, Neal Smith National Wildlife Refuge - (Abstract Only)

Schilling, K.E., Jacobson, P., Tomer, M.D., Wepking, N., Cambardella, C.A., Drobney, P. 2010. Effects of Prairie Reconstruction on Soil-Water and Groundwater Nutrient Concentrations, Neal Smith National Wildlife Refuge. North American Prairie Conf., Aug. 1-5, 10, Cedar Falls, IA. Available: http://www.napc2010.org/cs_schedule.html.

Soil Phosphorus Distribution in a Crop Production System with Long-term Compost Amendment - (Proceedings)

Bortolon, L., Kovar, J.L., Cambardella, C.A., Singer, J.W., Gianello, C. 2010. Soil Phosphorus Distribution in a Crop Production System with Long-term Compost Amendment. In: Gilkes, R.J. and Prakongkep, N. (ed). Proceedings of the 19th World Congress Soil Science, August 1-6, 2010, Brisbane, Australia. ISBN 978-0-646-53783-2. DVD.

Watershed-Scale Soil Quality Assessment: Assessing Reasons for Poor Canopy Development in Corn - (Proceedings)

Stott, D.E., Cambardella, C.A., Tomer, M.D., Karlen, D.L. 2010. Watershed-Scale Soil Quality Assessment: Assessing Reasons for Poor Canopy Development in Corn [abstract]. In: Proceedings of the World Congress of Soil Science, August 1-6, 2010, Brisbane, Australia. CD ROM.

Soil Nitrogen Response to Coupling Cover Crops with Manure Injection - (Peer Reviewed Journal)

Cambardella, C.A., Moorman, T.B., Singer, J.W. 2010. Soil Nitrogen Response to Coupling Cover Crops with Manure Injection. Nutrient Cycling in Agroecosystems. 87:383-393.

Coupling Cover Crops with Alternative Swine Manure Application Strategies: Manure-15N Tracer Studies - (Abstract Only)

Cambardella, C.A., Moorman, T.B., Singer, J.W., Tomer, M.D., Kovar, J.L., Kerr, B.J. 2009. Coupling Cover Crops with Alternative Swine Manure Application Strategies: Manure-15N Tracer Studies [abstract]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 1-5, 2009, Pittsburgh, PA. Paper No. 555-77.

Inorganic and Organic Phosphorus in Soil Affected by Compost, Tillage and Cropping System - (Abstract Only)

Bortolon, L., Kovar, J.L., Cambardella, C.A., Singer, J.W., Gianello, C. 2009. Inorganic and Organic Phosphorus in Soil Affected by Compost, Tillage and Cropping System [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 1-5, 2009, Pittsburgh, PA. Paper No. 352-11.

Phosphorus in Soil and Runoff Following Swine Manure Injection with a Low-Disturbance Applicator - (Abstract Only)

Kovar, J.L., Moorman, T.B., Cambardella, C.A., Singer, J.W., Tomer, M.D. 2009. Phosphorus in Soil and Runoff Following Swine Manure Injection with a Low-Disturbance Applicator [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 1-5, 2009, Pittsburgh, PA. Paper No. 270-7.

Quality Assessment of Corn Fields with Areas of Poor Canopy Development - (Abstract Only)

Stott, D.E., Cambardella, C.A., Tomer, M.D., Karlen, D.L. 2009. Quality Assessment of Corn Fields with Areas of Poor Canopy Development. ASA-CSSA-SSSA Annual Meeting Abstracts. CD ROM.

Crop Residues: The Rest of the Story - (Peer Reviewed Journal)

Karlen, D.L., Lal, R., Follett, R.F., Kimble, J.M., Hatfield, J.L., Miranowski, J.M., Cambardella, C.A., Manale, A., Anex, R.P., Rice, C.W. 2009. Crop Residues: The Rest of the Story. Environmental Science and Technology. 43(21):8011-8015.

Is No-Tillage Enough? A Field-Scale Watershed Assessment of Conservation Effects - (Peer Reviewed Journal)

Karlen, D.L., Dinnes, D.L., Tomer, M.D., Meek, D.W., Cambardella, C.A., Moorman, T.B. 2009. Is No-Tillage Enough? A Field-Scale Watershed Assessment of Conservation Effects. Journal of Integrative Biosciences. 7(2):1-24.

Soil Carbon Dynamics in a Shelterbelt in the Midwest: Sources and Spatial Variability - (Abstract Only)

Hernandez Ramirez, G., Sauer, T.J., Cambardella, C.A., Brandle, J.R. 2008. Soil Carbon Dynamics in a Shelterbelt in the Midwest: Sources and Spatial Variability [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, October 5-9, 2008, Houston, TX.

Three Analysis Examples for Time Series Data - (Abstract Only)

Meek, D.W., Laird, D.A., Dinnes, D.L., Jaynes, D.B., Cambardella, C.A., Colvin, T.S., Hatfield, J.L., Karlen, D.L. 2008. Three Analysis Examples for Time Series Data [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Oct. 5-9, 2008, Houston, TX.

Soil Function and the Dynamics of Soil Change - (Abstract Only)

Cambardella, C.A. 2008. Soil Function and the Dynamics of Soil Change [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Oct. 5-9, 2008, Houston, TX.

Carbon, nutrient and energy budgets in the LTAR in Iowa: 10-year comparison - (Abstract Only)

Cambardella, C.A., Delate, K. 2008. Carbon, nutrient and energy budgets in the LTAR in Iowa: 10-year comparison [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Oct. 5-9, 2008, Houston, TX.

Nitrogen Fertilizer Effects on Soil Carbon Balances in Midwestern U.S. Agricultural Systems - (Peer Reviewed Journal)

Russell, A.E., Cambardella, C.A., Laird, D.A., Jaynes, D.B., Colvin, T.S., Meek, D.W. 2009. Nitrogen Fertilizer Effects on Soil Carbon Balances in Midwestern U.S. Agricultural Systems. Ecological Applications. 19(5):1102-1113.

Enhancing Nutrient Cycling by Coupling Cover Crops with Manure Injection - (Peer Reviewed Journal)

Singer, J.W., Cambardella, C.A., Moorman, T.B. 2008. Enhancing Nutrient Cycling by Coupling Cover Crops with Manure Injection. Agronomy Journal. 100(6):1735-1739.

Sustainable corn-based bioenergy farming systems - (Abstract Only)

Singer, J.W., Laird, D.A., Cambardella, C.A., Karlen, D.L., Moore, K.J., Lamkey, K.R., Hatfield, J.L. 2008. Sustainable corn-based bioenergy farming systems. AGRO Division [abstract]. American Chemical Society National Meeting. No. 162.

A simple tool for implementation of US Farm Bill Programs: Can a practice-based index predict soil function in organic and conventional farming systems? - (Abstract Only)

Andrews, S.S., Cambardella, C.A., Wander, M.M. 2008. A simple tool for implementation of US Farm Bill Programs: Can a practice-based index predict soil function in organic and conventional farming systems?. Ecological Society of America Abstracts. Available: http://www.esa.org/meetings

A Comparison of Soil Food Webs Beneath C3- and C4-Dominated Grasslands - (Peer Reviewed Journal)

Dornbush, M.E., Cambardella, C.A., Ingham, E.R., Raich, J.W. 2008. A Comparison of Soil Food Webs Beneath C3- and C4-Dominated Grasslands. Biology and Fertility of Soils. 45:73-81.

A Preliminary Watershed Scale Soil Quality Assessment in North Central Iowa USA - (Peer Reviewed Journal)

Karlen, D.L., Tomer, M.D., Neppel, J., Cambardella, C.A. 2008. A Preliminary Watershed Scale Soil Quality Assessment in North Central Iowa USA. Soil & Tillage Research. 99:291-299.

Coupling cover crops and manure injection: cover crop N and P uptake - (Abstract Only)

Singer, J.W., Moorman, T.B., Cambardella, C.A. 2007. Coupling cover crops and manure injection: cover crop N and P uptake [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 4-8, 2007, New Orleans, LA.

Soil Quality Change in Long-Term Organic Crop Rotations - (Abstract Only)

Cambardella, C.A., Delate, K. 2007. Soil Quality Change in Long-Term Organic Crop Rotations [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 3-6, 2007, New Orleans, LA.

Coupling Cover Crops and Manure Injection: Soil Inorganic N Changes - (Abstract Only)

Cambardella, C.A., Moorman, T.B., Singer, J.W. 2007. Coupling Cover Crops and Manure Injection: Soil Inorganic N Changes [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 3-6, 2007, New Orleans, LA.

Environmental and Economic Outcomes of Long Term Participatory Organic Research in Iowa - (Abstract Only)

Delate, K., Cambardella, C.A., Chase, C., Rosmann, R. 2007. Environmental and Economic Outcomes of Long Term Participatory Organic Research in Iowa [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 3-6, 2007, New Orleans, LA.

Effects of organic fertilization and cover crops on organic pepper production - (Peer Reviewed Journal)

Delate, K., Cambardella, C.A., Mc Kern, A.C. 2008. Effects of organic fertilization and cover crops on organic pepper production. HortTechnology. 18(2):215-226.

Coupling Manure Injection with Cover Crops to Enhance Nutrient Cycling - (Proceedings)

Singer, J.W., Cambardella, C.A., Moorman, T.B. 2007. Coupling Manure Injection with Cover Crops to Enhance Nutrient Cycling. Integrated Crop Management Conference Proceedings, November 28-29, 2007, Ames, IA. p. 255-258.

Soil and cover crop responses to liquid swine manure application - (Popular Publication)

Cambardella, C.A., Singer, J.W., Moorman, T.B. 2007. Soil and cover crop responses to liquid swine manure application. Iowa Manure Matters Odor and Nutrient Management Newsletter. 10(3).Available: http://www.extension.iastate.edu/pages/communications/EPC/Fall07/soilcovercrop.html.

Evaluating assessment tools for soil ecosystem function used to implement US Farm Bill policy: How well do they work? - (Abstract Only)

Andrews, S.S., Cambardella, C.A., Mitchell, J.P., Johnson, M.D., Kome, C.E. 2007. Evaluating assessment tools for soil ecosystem function used to implement US Farm Bill policy: How well do they work?. Ecological Society of America Abstracts. Available: http://www.esa.org/meetings

HYDROGEOLOGIC CONTROLS ON NITRATE TRANSPORT IN A SMALL AGRICULTURAL CATCHMENT, IOWA - (Peer Reviewed Journal)

Schilling, K.E., Tomer, M.D., Zhang, Y.K., Weisbrod, T., Jacobsen, P., Cambardella, C.A. 2007. Hydrogeologic controls on nitrate transport in a small agricultural catchment, Iowa. Journal of Geophysical Research-Biogeosciences. 112, G03007. Available: http://www.agu.org/journals/jg/jg0703/2007JG000405/.

SOIL CARBON AND TREE LITTER DYNAMICS IN A RED CEDAR-SCOTCH PINE SHELTERBELT - (Peer Reviewed Journal)

Sauer, T.J., Cambardella, C.A., Brandle, J.R. 2007. Soil carbon and tree litter dynamics in a red cedar-scotch pine shelterbelt. Agroforestry Systems. 71:163-174.

Producer-Researcher Interactions on On-Farm Research: A Case Study on Developing a Certified Organic Research Site - (Peer Reviewed Journal)

Karlen, D.L., Cambardella, C.A., Bull, C.T., Chase, C.A., Gibson, L.R., Delate, K. 2007. Producer-Researcher Interactions on On-Farm Research: A Case Study on Developing a Certified Organic Research Site. Agronomy Journal. 99:779-790.

RZWQM Simulation Of Long-Term Crop Production, Water And Nitrogen Balances In Northeast Iowa - (Peer Reviewed Journal)

Ma, L., Malone, R.W., Heilman, P., Karlen, D.L., Kanwar, R., Cambardella, C.A., Ahuja, L.R. 2007. RZWQM simulation of long-term crop production, water and nitrogen balances in northeast Iowa. Geoderma 140(3):247-259. doi: 10.1016/j.geoderma.2007.04.009.

ASSESSING SOIL QUALITY AT A WATERSHED SCALE IN NORTH CENTRAL IOWA, USA - (Proceedings)

Karlen, D.L., Tomer, M.D., Neppel, J., Cambardella, C.A. 2006. Assessing soil quality at a watershed scale in North Central Iowa, USA. 17th International Soil Tillage Research Organization (ISTRO) Proceedings. p.1255-1267.

RESIDUAL EFFECTS OF COMPOSTED AND FRESH SOLID SWINE (SUS SCROFA L.) MANURE ON SOYBEAN (GLYCINE MAX (L.) MERR.) GROWTH AND YIELD - (Peer Reviewed Journal)

Mc Andrews, G.A., Liebman, M., Cambardella, C.A., Richard, T.L. 2006. Residual effects of composted and fresh solid swine (Sus scrofa l.) manure on soybean (Glycine max (l.) merr.) growth and yield. Agronomy Journal. 98(4):873-882.

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.

CROP ROTATION EFFECTS ON SOIL QUALITY AT THREE NORTHERN CORN/SOYBEAN BELT LOCATIONS - (Peer Reviewed Journal)

Karlen, D.L., Hurley, E.G., Andrews, S.S., Cambardella, C.A., Meek, D.W., Duffy, M.D., Mallarino, A.P. 2006. Crop rotation effects on soil quality at three northern corn/soybean belt locations. Agronomy Journal. 98:484-495.

VARIATION IN SURFACE-SOIL PROPERTIES AND WATER CONTENTS ACROSS TWO WATERSHEDS WITH CONTRASTING TILLAGE HISTORIES - (Proceedings)

Tomer, M.D., Cambardella, C.A., James, D.E., Moorman, T.B. 2005. Variation in surface-soil properties and water contents across two watersheds with contrasting tillage histories. In: Proceedings of the Soil Science Society of America Annual Meeting. Soil Science Society of American Annual Meeting, November 6-10, 2005, Salt Lake City, UT. 2005 CDROM.

SURFACE-SOIL PROPERTIES AND WATER CONTENTS ACROSS TWO WATERSHEDS WITH CONTRASTING TILLAGE HISTORIES - (Peer Reviewed Journal)

Tomer, M.D., Cambardella, C.A., James, D.E., Moorman, T.B. 2006. Surface-soil properties and water contents across two watersheds with contrasting tillage histories. Soil Science Society of America Journal. 70:620-630.

CONSERVATION PRACTICES: SHORT TERM DECISIONS WITH LONG TERM EFFECTS - (Abstract Only)

Tomer, M.D., Burkart, M.R., Cambardella, C.A., Meek, D.W., James, D.E., Kramer, L.A. 2005. Conservation practices: short term decisions with long term effects. Soil Conservation and Water Quality Symposium Proceedings. Available: http://www.swcs.org/en/swcs_international_conferences/2005_annual_conference/index.cfm?nodeID=7455&audienceID=1

COMMENTARY - SPATIAL VARIATION OF SOIL PROPERTIES RELATING TO VEGETATION CHANGES - (Other)

Sauer, T.J., Cambardella, C.A., Meek, D.W. 2006. Commentary - Spatial variation of soil properties relating to vegetation changes. Plant and Soil Journal. 280:1-5.

CARBON AND NITROGEN PARTITIONING IN ABOVEGROUND LITTER WITHIN A MIXED-SPECIES SHELTERBELT - (Abstract Only)

Cambardella, C.A., Sauer, T.J., Brandle, J.R. 2005. Carbon and nitrogen partitioning in aboveground litter within a mixed-species shelterbelt [CD-ROM]. Rochester, MN. North American Agroforestry Conference.

SOIL CARBON CONTENT WITHIN A RED CEDAR-SCOTCH PINE SHELTERBELT - (Abstract Only)

Sauer, T.J., Cambardella, C.A., Brandle, J.R. 2000 [CD-ROM]. Soil carbon content within a red cedar-scotch pine shelterbelt. Rochester, MN. North American Agroforestry Conference.

CORN RESPONSE TO LATE-SPRING NITROGEN MANAGEMENT IN THE WALNUT CREEK WATERSHED - (Peer Reviewed Journal)

Karlen, D.L., Dinnes, D.L., Jaynes, D.B., Hurburgh, C.R., Cambardella, C.A., Colvin, T.S., Rippke, G.R. 2005. Corn response to late-spring nitrogen management in the Walnut Creek watershed. Agronomy Journal. 97:1054-1061.

MEANINGFUL POOLS IN DETERMINING SOIL C AND N DYNAMICS: SYMPOSIUM SYNTHESIS - (Abstract Only)

Cambardella, C.A. 2004. Meaningful pools in determining soil C and N dynamics: symposium synthesis [CD-ROM]. Madison, WI. ASA-CSSA-SSSA Annual Meeting Abstracts.

BEYOND AGRONOMICS: NEELY-KINYON LONG-TERM AGROECOLOGICAL RESEARCH (LTAR) RESULTS IN YEAR SIX - (Abstract Only)

Delate, K., Cambardella, C.A., Burcham, B., Mc Kern, A. 2004. Beyond agronomics: Neely-Kinyon long-term agroecological research (LTAR) results in year six [CD-ROM]. Madison, WI. ASA-CSSA-SSSA Annual Meeting Abstracts.

MULTI-SCALE SOIL RESOURCE EVALUATION USING THE SOIL MANAGEMENT ASSESSMENT FRAMEWORK (SMAF) - (Abstract Only)

Cambardella, C.A., Andrews, S.S., Moorman, T.B. 2004. Multi-scale soil resource evaluation using the soil management assessment framework (SMAF)[abstract]. Soil and Water Conservation Society. Available: http://www.swcs.org/t_what2004confabstractsCONTACTS.htm

WATERSHED-SCALE ASSESSMENT OF SOIL QUALITY IN THE LOESS HILLS OF SOUTHWEST IOWA - (Peer Reviewed Journal)

Cambardella, C.A., Moorman, T.B., Andrews, S.S., Karlen, D.L. 2004. Watershed-scale assessment of soil quality in the loess hills of southwest Iowa. Soil & Tillage Research. 78(2):237-247.

QUANTIFICATION OF TILLAGE AND LANDSCAPE EFFECTS ON SOIL CARBON IN SMALL IOWA WATERSHEDS - (Peer Reviewed Journal)

Moorman, T.B., Cambardella, C.A., James, D.E., Karlen, D.L., Kramer, L.A. 2004. Quantification of tillage and landscape effects on soil carbon in small Iowa watersheds. Soil & Tillage Research. 78(2):225-236.

THE SOIL MANAGEMENT ASSESSMENT FRAMEWORK: A QUANTITATIVE SOIL QUALITY EVALUATION METHOD WITH CASE STUDIES - (Peer Reviewed Journal)

Andrews, S.S., Karlen, D.L., Cambardella, C.A. 2004. The soil management assessment framework: a quantitative soil quality evaluation method with case studies. Soil Science Society of America Journal. 68:1945-1962.

CARBON CYCLE IN SOILS: FORMATION AND DECOMPOSITION - (Book / Chapter)

Cambardella, C.A. 2004. Carbon cycle in soils: formation and decomposition. In: Hillel, D., editor. Encyclopedia of Soils in the Environment. Vol. I. Amsterdam: Elsevier Academic Press. p. 170-175.

AGROECOSYSTEM PERFORMANCE DURING TRANSITION TO CERTIFIED ORGANIC GRAIN PRODUCTION - (Peer Reviewed Journal)

Delate, K., Cambardella, C.A. 2004. Agroecosystem performance during transition to certified organic grain production. Agronomy Journal. 96:1288-1298.

GROWTH RESPONSES OF CORN (ZEA MAY L.) TO COMPOSTED AND FRESH SOLID SWINE (SUS SCROFA L.) MANURE - (Peer Reviewed Journal)

Loecke, T.D., Liebman, M., Cambardella, C.A., Richard, T.L. 2004. Growth responses of corn (Zea mays L.) to composted and fresh solid swine (Sus scrofa L.) manure. Crop Science. 44:177-184.

AGGREGATE SIZE-STABILITY DISTRIBUTION AND SOIL STABILITY - (Peer Reviewed Journal)

Marquez, C.O., Garcia, V.J., Cambardella, C.A., Schultz, R.C., Isenhart, T.M. 2004. Aggregate size-stability distribution and soil stability. Soil Science Society of America Journal. 68(3):725-735.

SOIL CARBON POOLS IN A TALLGRASS PRAIRIE RECONSTRUCTION CHRONOSEQUENCE - (Abstract Only)

CAMBARDELLA, C.A., ISENHART, T.M., SCHILLING, K.E., DROBNEY, P., SCHULTZ, R.C. SOIL CARBON POOLS IN A TALLGRASS PRAIRIE RECONSTRUCTION CHRONOSEQUENCE. ASA-CSSA-SSSA PROCEEDINGS. 2003. CD-ROM. MADISON, WI.

COMPARISION OF ORGANIC AND CONVENTIONAL CROPS IN A LONG-TERM AGROECOLOGICAL RESEARCH (LTAR) SITE: YIELDS, SOIL QUALITY AND ECONOMICS IN YEARS 1-6 - (Abstract Only)

DELATE, K., CAMBARDELLA, C.A., CHASE, C., DUFFY, M., FREIDRICH, H., BURCHAM, B., HARTZLER, R., DEWITT, J. COMPARISION OF ORGANIC AND CONVENTIONAL CROPS IN A LONG-TERM AGROECOLOGICAL RESEARCH (LTAR) SITE: YIELDS, SOIL QUALITY AND ECONOMICS IN YEARS 1-6. ASA-CSSA-SSSA PROCEEDINGS. 2003. CD-ROM. MADISON, WI.

DIRECT ANALYSIS OF POM-C USING LOSS-ON-IGNITION TO CORRECT FOR SAND WEIGHT - (Abstract Only)

REEDER, S.J., SHERROD, L.A., CAMBARDELLA, C.A. DIRECT ANALYSIS OF POM-C USING LOSS-ON-IGNITION TO CORRECT FOR SAND WEIGHT. ASA-CSSA-SSSA PROCEEDINGS. 2003. CD-ROM. MADISON, WI.

APPLICATIONS AND IMPLICATIONS OF THE SOIL MANAGEMENT ASSESSMENT FRAMEWORK - (Abstract Only)

ANDREWS, S.S., KARLEN, D.L., NORFLEET, L., CAMBARDELLA, C.A. APPLICATIONS AND IMPLICATIONS OF THE SOIL MANAGEMENT ASSESSMENT FRAMEWORK. ASA-CSSA-SSSA PROCEEDINGS. 2003. CD-ROM. MADISON, WI.

ORGANIC CORN PRODUCTION, ORGANIC MATTER MANAGEMENT, AND ROOT HEALTH - (Abstract Only)

GOLDSTEIN, W., WOOD, A., WANDER, M., CAMBARDELLA, C.A., BARBER, W., JENSEN, K., MULCAHY, J. ORGANIC CORN PRODUCTION, ORGANIC MATTER MANAGEMENT, AND ROOT HEALTH. ASA-CSSA-SSSA PROCEEDINGS. 2003. CD-ROM. MADISON, WI.

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.

TILLAGE AND COMPOST AFFECT YIELD OF CORN, SOYBEAN, AND WHEAT - (Abstract Only)

SINGER, J.W., KOHLER, K.A., LIEBMAN, M., RICHARD, T.L., CAMBARDELLA, C.A., BUHLER, D.D. TILLAGE AND COMPOST AFFECT YIELD OF CORN, SOYBEAN, AND WHEAT. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2003. CD-ROM. MADISON, WI.

IMPACTS OF COMPOSTED SWINE MANURE ON WEED AND CORN NUTRIENT UPTAKE, GROWTH, AND SEED PRODUCTION - (Peer Reviewed Journal)

Liebman, M., Menalled, R.D., Buhler, D.D., Richard, T.L., Sundberg, D.N., Cambardella, C.A., Kohler, K.A. 2004. Impacts of composted swine manure on weed and corn nutrient uptake, growth, and seed production. Weed Science. 52:365-375.

TILLAGE AND COMPOST AFFECT YIELD OF CORN, SOYBEAN, AND WHEAT AND SOIL FERTILITY - (Peer Reviewed Journal)

SINGER, J.W., KOHLER, K.A., LIEBMAN, M., RICHARD, T.L., CAMBARDELLA, C.A., BUHLER, D.D. TILLAGE AND COMPOST AFFECT YIELD OF CORN, SOYBEAN, AND WHEAT AND SOIL FERTILITY. AGRONOMY JOURNAL. 2004. V. 96. P. 531-537.

USING THE LATE SPRING NITRATE TEST TO REDUCE NITRATE LOSS WITHIN A WATERSHED - (Peer Reviewed Journal)

JAYNES, D.B., DINNES, D.L., MEEK, D.W., KARLEN, D.L., CAMBARDELLA, C.A., COLVIN, T.S. USING THE LATE SPRING NITRATE TEST TO REDUCE NITRATE LOSS WITHIN A WATERSHED. JOURNAL OF ENVIRONMENTAL QUALITY. 2004. V. 33(2). P. 656-668.

TIMING OF APPLICATION AND COMPOSTING AFFECT CORN (ZEA MAYS L.) AND YIELD RESPONSE TO SOLID SWINE (SUS SCROFA L.) MANURE - (Peer Reviewed Journal)

Loecke, T.D., Liebman, M., Cambardella, C.A., Richard, T.L. 2004. Timing of application and composting affect corn (Zea mays L.) and yield response to solid swine (Sus scropfa L.) manure. Agronomy Journal. 96:214-223.

DIRECT ANALYSIS OF POM-C USING LOSS-ON-IGNITION TO CORRECT FOR SAND WEIGHT - (Proceedings)

Reeder, S.J., Sherrod, L.A., Cambardella, C.A. 2003. Direct analysis of pom-c using loss-on-ignition to correct for sand weight. American Society of Agronomy Abstracts. Paper S08-reeder-822334.

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.

BOOK REVIEW: AGRICULTURAL PRACTICES AND POLICIES FOR CARBON SEQUESTRATION IN SOIL - (Popular Publication)

Cambardella, C.A. 2003. Book review: Agricultural Practices and Policies for Carbon Sequestration in Soil. In: Kimble, J.M., Lal, R., Follett, R.F., editors. CRC Press LLC (Lewis Publishers) Crop Science. 43(5):1895.

LINKING SOIL QUALITY TO ECONOMICS USING MANAGEMENT PRACTICE INDICATORS - (Abstract Only)

CAMBARDELLA, C.A., KARLEN, D.L., ANDREWS, S.S., DUFFY, M.D. LINKING SOIL QUALITY TO ECONOMICS USING MANAGEMENT PRACTICE INDICATORS. ASA-CSSA-SSSA PROCEEDINGS. 2002. CD-ROM. MADISON, WI.

SHORT-TERM TILLAGE EFFECTS ON BIOLOGICALLY ACTIVE SOIL ORGANIC MATTER - (Abstract Only)

CAMBARDELLA, C.A., DELATE, K. SHORT-TERM TILLAGE EFFECTS ON BIOLOGICALLY ACTIVE SOIL ORGANIC MATTER. ASA-CSSA-SSSA PROCEEDINGS. 2002. CD-ROM. MADISON, WI.

LONG-TERM AGROECOLOGICAL RESEARCH (LTAR) IN IOWA: CERTIFIED ORGANIC COMPARISONS - (Abstract Only)

DELATE, K., CAMBARDELLA, C.A., BRUMMER, E.C. LONG-TERM AGROECOLOGICAL RESEARCH (LTAR) IN IOWA: CERTIFIED ORGANIC COMPARISONS. ASA-CSSA-SSSA PROCEEDINGS. 2002. CD-ROM. MADISON, WI.

SOIL AGGREGATION DYNAMICS UNDER RIPARIAN PASTURES, FOREST, AND CROPLANDS IN NE MISSOURI - (Abstract Only)

ZHANG, H., MARQUEZ, C.O., CAMBARDELLA, C.A., SCHULTZ, R.C., ISENHART, T.M., NELSON, J.L. SOIL AGGREGATION DYNAMICS UNDER RIPARIAN PASTURES, FOREST, AND CROPLANDS IN NE MISSOURI. ASA-CSSA-SSSA PROCEEDINGS. 2002. CD-ROM. MADISON, WI.

TIMING OF APPLICATION AND COMPOSTING AFFECT ON CORN YIELD RESPONSE TO SOLID SWINE MANURE - (Abstract Only)

LOECKE, T.D., LIEBMAN, M.Z., CAMBARDELLA, C.A., RICHARD, T.L. TIMING OF APPLICATION AND COMPOSTING AFFECT ON CORN YIELD RESPONSE TO SOLID SWINE MANURE. ASA-CSSA-SSSA PROCEEDINGS. 2002. CD-ROM. MADISON, WI.

DOES SOIL QUALITY SHOW AN ECONOMIC BENEFIT FOR LONG-TERM CROP ROTATION? - (Abstract Only)

KARLEN, D.L., HURLEY, E.G., ANDREWS, S.S., DUFFY, M.D., MALLARINO, A.P., CAMBARDELLA, C.A. DOES SOIL QUALITY SHOW AN ECONOMIC BENEFIT FOR LONG-TERM CROP ROTATION?. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2002. CD-ROM. MADISON, WI.

SOIL CARBON ASSESSMENT ACROSS A NATIVE PRAIRIE RESTORATION CHRONONSEQUENCE - (Proceedings)

Cambardella, C.A., Isenhart, T.M., Schilling, K.E., Drobney, P., Schultz, R.C. 2004. Soil carbon assessment across a native prairie restoration chrononsequence. In: Fore, Stephanie, editor. Proceedings of the 18th North American Prairie Conference, June 23-27, 2002, Kirksville, MO. p. 49-53.

TRANSITION STRATEGIES FOR POST-CRP CERTIFIED ORGANIC GRAIN PRODUCTION - (Peer Reviewed Journal)

DELATE, K., CAMBARDELLA, C.A., KARLEN, D.L. TRANSITION STRATEGIES FOR POST-CRP CERTIFIED ORGANIC GRAIN PRODUCTION. CROP MANAGEMENT at www.cropmanagement.org. 2002. Available from: www.cropmanagement.org.

CROPPING SYSTEM EFFECTS ON NO3-N LOSS WITH SUBSURFACE DRAINAGE WATER - (Peer Reviewed Journal)

BAKHSH, A., KANWAR, R.S., BAILEY, T.B., CAMBARDELLA, C.A., KARLEN, D.L., COLVIN, T.S. CROPPING SYSTEM EFFECTS ON NO3-N LOSS WITH SUBSURFACE DRAINAGE WATER. TRANSACTIONS OF THE AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS. 2002. V. 45(6). P. 1789-1797.

NITROGEN FERTILIZER EFFECTS ON SOIL ORGANIC CARBON DYNAMICS IN CORN-SOYBEAN AGROECOSYSTEMS - (Abstract Only)

RUSSELL, A.E., CAMBARDELLA, C.A., LAIRD, D.A., JAYNES, D.B., COLVIN, T.S., MEEK, D.W. NITROGEN FERTILIZER EFFECTS ON SOIL ORGANIC CARBON DYNAMICS IN CORN-SOYBEAN AGROECOSYSTEMS. ECOLOGICAL SOCIETY OF AMERICA PROCEEDINGS. 2002. AVAILABLE FROM: www:esa.org/publications.

SURFACE WATER QUALITY RESPONSE TO A NITROGEN FERTILIZER BMP AT THE WATERSHED SCALE - (Abstract Only)

DINNES, D.L., JAYNES, D.B., KARLEN, D.L., MEEK, D.W., CAMBARDELLA, C.A., COLVIN, T.S., HATFIELD, J.L. SURFACE WATER QUALITY RESPONSE TO A NITROGEN FERTILIZER BMP AT THE WATERSHED SCALE. SOIL AND WATER CONSERVATION SOCIETY. 2002. V. 57(5). P. 308.

COMPOST MINERALIZATION IN SOIL AS A FUNCTION OF COMPOSTING PROCESS CONDITIONS - (Peer Reviewed Journal)

Cambardella, C.A., Richard, T.L., Russell, A.E. 2003. Compost mineralization in soil as a function of composting process conditions. European Journal of Soil Biology. 39(3):117-127.

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.

CONTINUOUS CORN WITH MOLDBOARD TILLAGE: SILAGE AND FERTILITY EFFECTS ON SOIL CARBON - (Peer Reviewed Journal)

REICOSKY, D.C., EVANS, S.D., CAMBARDELLA, C.A., ALLMARAS, R.R., WILTS, A.R., HUGGINS, D.R. CONTINUOUS CORN WITH MOLDBOARD TILLAGE: RESIDUE AND FERTILITY EFFECTS ON SOIL CARBON. JOURNAL OF SOIL AND WATER CONSERVATION. 2002. V. 57(5). P. 277-284.

SOIL QUALITY IN ORGANIC AGRICULTURAL SYSTEMS - (Experiment Station)

DELATE, K., CAMBARDELLA, C.A., KARLEN, D.L. SOIL QUALITY IN ORGANIC AGRICULTURAL SYSTEMS. IOWA COOPERATIVE EXTENSION PUBLICATION. 2002. PM #1882. ISU COOP EXTENSION SERVICE, AMES, IA.

EARLY SEASON CHANGES IN BIOLOGICALLY-ACTIVE SOM - (Abstract Only)

Cambardella, C.A. 2001. Early season changes in biologically-active SOM [abstract]. American Society of Agronomy Meetings. s03-cambardella140635-P.pdf.

LONG-TERM AGROECOLOGICAL RESEARCH (LTAR) IN IOWA: CERTIFIED ORGANIC COMPARISONS - (Abstract Only)

Delate, K., Cambardella, C.A. 2001. Long-term agroecological research (LTAR) in Iowa: certified organic comparisons [abstracts]. American Society of Agronomy Meetings. c03delate134846-P.pdf.

MANAGING ORGANIC MATTER, NUTRIENTS, ROOT HEALTH AND YIELDS ON MIDWESTERN FARMS - (Abstract Only)

Goldstein, W., Cambardella, C.A., Wander, M., Mulcahy, J., Exner, D., Stute, J. 2001. Managing organic matter, nutrients, root health and yields on midwestern farms [abstract]. American Society of Agronomy Meetings. a08goldstein172014-0.pdf.

SEASONAL DYNAMICS OF SOIL MACROAGGREGATES IN DIFFERENT VEGETATION - (Abstract Only)

Marquez, C.O., Cambardella, C.A., Garcia, V.J., Isenhart, T., Schultz, R. 2001. Seasonal dynamics of soil macroaggregates in different vegetation [abstract]. American Society of Agronomy Meetings. s03-213438-P.pdf.

SWINE MANURE MANAGEMENT CHALLENGES ON TILE-DRAINED SOILS - (Abstract Only)

KARLEN, D.L., CAMBARDELLA, C.A. SWINE MANURE MANAGEMENT CHALLENGES ON TILE-DRAINED SOILS. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2001. CD-ROM. MADISON, WI.

ASSESSING SOIL DEGRADATION AFTER CONVERSION OF NATIVE ECOSYSTEMS TO AGRICULTURAL PRODUCTION - (Abstract Only)

Marquez, C.O., Garcia, V.J., Cambardella, C.A., Isenhart, T., Schultz, R. 2001. Assessing soil degradation after conversion of native ecosystems to agricultural production [abstract]. American Society of Agronomy Meetings. s03-marquez210736-0.pdf.

A CONCEPTUAL MODEL TO STUDY SOIL AGGREGATES DYNAMICS - (Abstract Only)

Garcia, V.J., Marquez, C.O., Cambardella, C.A., Schultz, R.C., Isenhart, T.M. 2001. A conceptual model to study soil aggregates dynamics [abstracts]. American Society of Agronomy Meetings. s03garcia211819-0.pdf.

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.

N-MANAGEMENT AND CROP ROTATION EFFECTS ON YIELD AND RESIDUAL SOIL NITRATE LEVELS - (Peer Reviewed Journal)

BAKHSH, A., KANWAR, R.S., KARLEN, D.L., CAMBARDELLA, C.A., BAILEY, T.B., COLVIN, T.S. N-MANAGEMENT AND CROP ROTATION EFFECTS ON YIELD AND RESIDUAL SOIL NITRATE LEVELS. SOIL SCIENCE. 2001. V. 166(8). P. 530-538.

AGGREGATION AND ORGANIC MATTER - (Book / Chapter)

Cambardella, C.A. 2002. Aggregation and organic matter. New York City: Encyclopedia of Soil Science: Marcel Dekker, Inc. p. 41-44.

SPECIES AND MANAGEMENT EFFECTS ON SOIL CARBON DYNAMICS IN EXPERIMENTAL TROPICAL ECOSYSTEMS - (Abstract Only)

RUSSELL, A.E., CAMBARDELLA, C.A. SPECIES AND MANAGEMENT EFFECTS ON SOIL CARBON DYNAMICS IN EXPERIMENTAL TROPICAL ECOSYSTEMS. ECOLOGICAL SOCIETY OF AMERICA PROCEEDINGS. 2001. Paper No. RUS-9803-58467.

NITROGEN MANAGEMENT STRATEGIES TO REDUCE NITRATE LEACHING IN TILE-DRAINED MIDWESTERN SOILS - (Review Article)

DINNES, D.L., KARLEN, D.L., JAYNES, D.B., KASPAR, T.C., HATFIELD, J.L., COLVIN, T.S., CAMBARDELLA, C.A. NITROGEN MANAGEMENT STRATEGIES TO REDUCE NITRATE LEACHING IN TILE-DRAINED MIDWESTERN SOILS. AGRONOMY JOURNAL. 2002. V. 94. P. 153-171.

NITRATE LOSS IN SUBSURFACE DRAINAGE AS AFFECTED BY N-FERTILIZER RATE - (Peer Reviewed Journal)

Jaynes, D.B., Colvin, T.S., Karlen, D.L., Cambardella, C.A., Meek, D.W. 2001. Nitrate loss in subsurface drainage as affected by N-fertilizer rate. Journal of Environmental Quality. 30:1305-1314.

PLANT-SOIL-MICROBE N RELATIONSHIPS IN HIGH RESIDUE MANAGEMENT SYSTEMS - (Proceedings)

DINNES, D.L., JAYNES, D.B., KASPAR, T.C., COLVIN, T.S., CAMBARDELLA, C.A., KARLEN, D.L. PLANT-SOIL-MICROBE N RELATIONSHIPS IN HIGH RESIDUE MANAGEMENT SYSTEMS. SOUTH DAKOTA NO TILL ASSOCIATION ANNUAL CONFERENCE. 2001. P. 45-50.

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.

LONG-TERM AGROECOLOGICAL RESEARCH IN IOWA: THE TRANSITION YEARS - (Abstract Only)

Delate, K., Cambardella, C.A. 2000. Long-term agroecological research in Iowa:the transition years. American Society of Agronomy Meetings. P.144.

SEASONAL TRENDS IN SOIL ORGANIC MATTER AND AGGREGATES IN MULTI-SPECIES RIPARIAN BUFFERS, FORESTS, AND CROP FIELDS - (Abstract Only)

Marquez, C.O., Cambardella, C.A., Isenhart, T.M., Schultz, R.C. 2000. Seasonal trends in soil organic matter and aggregates in multi-species riparian buffers, forests, and crop fields. American Society of Agronomy Meetings. P.384.

USING THE WEIGHT-LOSS-ON-IGNITION METHOD TO MEASURE SPATIAL VARIABILITY OF SOIL CARBON - (Abstract Only) - (09-Nov-00)

REDUCING N CONTAMINATION OF SURFACE WATERS FROM TILE-DRAINED SOILS AT THE WATERSHED SCALE - (Abstract Only)

Dinnes, D.L., Jaynes, D.B., Meek, D.W., Cambardella, C.A., Colvin, T.S., Hatfield, J.L., Karlen, D.L. 2000. Reducing n contamination of surface waters from tile-drained soils at the watershed scale [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts. Madison, Wisconsin.

COMPARING MICROARTHROPOD DIVERSITY AND SOIL QUALITY INDICES IN THREE AGRICULTURAL WATERSHEDS - (Abstract Only)

Andrews, S.S., Hansen, R., Karlen, D.L., Cambardella, C.A., Moorman, T.B. 2000. Comparing microarthropod diversity and soil quality indices in three agricultural watersheds [abstract]. Ecological Society of America Proceedings. Available:www.esa.org/publications.

WATERSHED SCALE INTENSIVE NITROGEN FERTILIZER MANAGEMENT REDUCES NITROGEN CONTAMINATION OF SURFACE WATERS - (Abstract Only) - (13-Jul-00)

TILLAGE AND N-MANAGEMENT EFFECTS ON CROP YIELD AND RESIDUAL SOIL NITRATE - (Peer Reviewed Journal)

Bakhsh, A., Kanwar, R.S., Karlen, D.L., Cambardella, C.A., Colvin, T.S., Moorman, T.B., Bailey, T. 2000. Tillage and n-management effects on crop yield and residual soil nitrate. Transactions of the ASAE. 43(6):1589-1595.

AN AUTOREGRESSION MODEL FOR A PAIRED WATERSHED COMPARISON - (Proceedings)

MEEK, D.W., DINNES, D.L., JAYNES, D.B., CAMBARDELLA, C.A., COLVIN, T.S., HATFIELD, J.L., KARLEN, D.L. AN AUTOREGRESSION MODEL FOR A PAIRED WATERSHED COMPARISON. APPLIED STATISTICS IN AGRICULTURE CONFERENCE PROCEEDINGS. 2000. P. 223-231.

AN AUTOREGRESSION MODEL FOR A PAIRED WATERSHED COMPARISON - (Proceedings)

Meek, D.W., Dinnes, D.L., Jaynes, D.B., Cambardella, C.A., Colvin, T.S., Hatfield, J.L., Karlen, D.L. 2000. An autoregression model for a paired watershed comparison. Proceedings of the 12th Applied Statistics In Agriculture Conference. p. 223-231.

IDENTIFYING ASSOCIATIONS AMONG SITE PROPERTIES AND WEED SPECIES ABUNDANCE. PART I. MULTIVARIATE ANALYSIS - (Peer Reviewed Journal)

Dieleman, J.A., Mortensen, D.A., Buhler, D.D., Cambardella, C.A., Moorman, T.B. 2000. Identifying associations among site properties and weed species abundance. Part I. Multivariate analysis. Weed Science. 48:567-575.

INTENSIVE N FERTILIZER MANAGEMENT EFFECTS ON WATER QUALITY AT THE WATERSHED SCALE - (Abstract Only)

Dinnes, D.L., Jaynes, D.B., Cambardella, C.A., Colvin, T.S., Hatfield, J.L., Karlen, D.L. 2000. Intensive N fertilizer management effects on water quality at the watershed scale. Proceedings of the Watershed Approach to Improving Water Quality: Fact or Fantasy? Soil and Water Conservation Society. p. 95-99.

INTENSIVE N FERTILIZER MANAGEMENT EFFECTS ON WATER QUALITY AT THE WATERSHED SCALE - (Proceedings) - (30-Mar-00)

CONTRASTING EFFECTS OF ELEVATED CO2 ON OLD AND NEW SOIL CARBON POOLS - (Peer Reviewed Journal)

Cardon, Z.G., Hungate, B.A., Cambardella, C.A., Chappin Iii, F.S., Field, C.B., Holland, E.A., Mooney, H.A. 2001. Contrasting effects of elevated co2 on old and new soil carbon pools. Soil Biology and Biochemistry. 33:365-373.

INTENSIVE NITROGEN FERTILIZER MANAGEMENT EFFECTS ON WATER QUALITY AT THE WATERSHED SCALE - (Abstract Only)

Dinnes, D.L., Jaynes, D.B., Meek, D.W., Cambardella, C.A., Colvin, T.S., Hatfield, J.L., Karlen, D.L. 2000. Intensive nitrogen fertilizer management effects on water quality at the watershed scale. Proceedings of Agriculture and the Environment: A Wake-Up Call for Iowans. Iowa State University Extension, Ames, Iowa.

RELATIONSHIP OF INTRA-SEASONAL PATTERNS IN BIOLOGICALLY-ACTIVE SOIL C AND MICROBIAL BIOMASS - (Abstract Only) - (04-Nov-99)

INFLUENCE OF VEGETATION TYPE ON SOIL STRUCTURAL STABILITY IN A RIPARIAN BUFFER SYSTEM - (Abstract Only) - (04-Nov-99)

SOIL QUALITY, YIELD STABILITY, AND ECONOMIC ATTRIBUTES OF ALTERNATIVE CROP ROTATIONS - (Abstract Only) - (04-Nov-99)

INTENSIVE N FERTILIZER MANAGEMENT EFFECTS ON WATER QUALITY AT THE WATERSHED SCALE - (Abstract Only)

Dinnes, D.L., Jaynes, D.B., Cambardella, C.A., Colvin, T.S., Hatfield, J.L., Karlen, D.L. 1999. Intensive n fertilizer management effects on water quality at the watershed scale [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts. Madison, Wisconsin.

DECOMPOSITION OF BURIED ROOT RESIDUES IN THE FIELD - (Abstract Only) - (04-Nov-99)

TEMPORAL CHANGES IN SMALL DEPTH INCREMENTAL SOIL BULK DENSITY - (Peer Reviewed Journal) - (01-Sep-99)

SPLIT APPLICATION NITROGEN FERTILIZER MANAGEMENT EFFECTS ON CORN YIELD AND WATER QUALITY - (Popular Publication)

Dinnes, D.L., Jaynes, D.B., Cambardella, C.A., Colvin, T.S., Hatfield, J.L., Karlen, D.L. 1999. Split application nitrogen fertilizer management effects on corn yield and water quality. Farm Bureau Spokesman Press. 1999 Autumn Harvest Issue. Iowa Farm Bureau, West Des Moines, Iowa.

ESTIMATION OF PARTICULATE AND TOTAL ORGANIC MATTER BY WEIGHT LOSS-ON-IGNITION - (Book / Chapter)

Cambardella, C.A., Gajda, A.M., Doran, J.W., Wienhold, B.J., Kettler, T.A. 2001. Estimation of particulate and total organic matter by weight loss-on-ignition. In: Lal, R., J.M. Kimble, R.J. Follett, and B.A. Stewart, editors. Assessment Methods for Soil Carbon. Boca Raton, FL. Lewis Publishers/CRC Press. P. 349-359.

TEMPORAL DYNAMICS OF AGGREGATES AND ORGANIC MATTER IN STREAM RIPARIAN ZONE SOILS - (Abstract Only)

Marquez, C.O., Cambardella, C.A., Isenhart, T.M., Schultz, R.C. 1999. Temporal dynamics of aggregates and organic matter in stream riparian zone soils [abstract]. Ecological Society of America Bulletin. Available: www.esa.org/publications

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)

CARBON DYNAMICS OF SURFACE RESIDUE- AND ROOT-DERIVED ORGANIC MATTER UNDER SIMULATED NO-TILL - (Peer Reviewed Journal) - (26-Apr-99)

SURFACE RESIDUE- AND ROOT-DERIVED CARBON IN STABLE AND UNSTABLE AGGREGATES - (Peer Reviewed Journal) - (26-Apr-99)

ROOT-DERIVED CARBON AND THE FORMATION AND STABILIZATION OF AGGREGATES - (Peer Reviewed Journal) - (26-Apr-99)

NUTRIENT MANAGEMENT IN CROPPING SYSTEMS - (Monograph) - (03-Apr-99)

EFFECTS OF AN OPTIMUM FERTILIZER PROGRAM ON CORN YIELD AND WATERSHED WATER QUALITY - (Abstract Only) - (12-Jan-99)

TEMPORAL CHANGES IN SURFACE SOIL PROPERTIES AFTER NO-TILL ADOPTION - (Abstract Only) - (22-Oct-98)

ABOVE- AND BELOWGROUND-DERIVED C IN STABLE AND UNSTABLE AGGREGATES - (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)

SPATIAL ANALYSIS OF SOIL FERTILITY PARAMETERS - (Peer Reviewed Journal) - (22-Sep-98)

ATRAZINE AND METRIBUZIN IN SOILS, SUBSURFACE DRAINAGE, AND GROUNDWATER - (Abstract Only) - (07-Aug-98)

ROOT-DERIVED C AND THE FORMATION AND STABILIZATION OF AGGREGATES - (Abstract Only) - (06-Aug-98)

WATER QUALITY IN WALNUT CREEK WATERSHED: NITRATE-NITROGEN IN SOILS, SUBSURFACE DRAINAGE WATER AND SHALLOW GROUNDWATER - (Peer Reviewed Journal) - (29-Jul-98)

IMPACT OF SWINE MANURE APPLICATION ON GROUNDWATER QUALITY UNDER CONTINUOUS-CORN AND CORN-SOYBEAN PRODUCTION SYSTEMS - (Proceedings) - (22-Jul-98)

ASSESSING SOIL QUALITY IN A RIPARIAN BUFFER STRIP SYSTEM BY TESTING ORGANIC MATTER FRACTIONS - (Peer Reviewed Journal) - (15-Jul-98)

WATER QUALITY IN WALNUT CREEK WATERSHED: HERBICIDES IN SOILS, SUBSURFACE DRAINAGE AND GROUNDWATER - (Peer Reviewed Journal) - (08-Jul-98)

WATER QUALITY IN WALNUT CREEK WATERSHED: SETTING AND FARMING PRACTICES - (Peer Reviewed Journal) - (08-Jul-98)

DEPTH INCREMENTAL SOIL PROPERTIES UNDER NO-TILL OR CHISEL MANAGEMENT - (Peer Reviewed Journal) - (09-Jun-98)

ALTERNATIVE N FERTILIZER MANAGEMENT STRATEGIES EFFECTS ON SUBSURFACE DRAIN EFFLUENT AND N UPTAKE - (Peer Reviewed Journal) - (27-May-98)

EFFECTS OF AN OPTIMUM N FERTILIZER PROGRAM ON CORN YIELD AND WATERSHED WATER QUALITY - (Abstract Only) - (06-May-98)

TILLAGE SYSTEM EFFECTS ON 15-YR CARBON-BASED AND SIMULATED N BUDGETS IN A TILE-DRAINED IOWA FIELD - (Peer Reviewed Journal) - (07-Apr-98)

ALTERNATIVE CROPPING SYSTEMS TO IMPROVE THE QUALITY OF SHALLOW GROUNDWATER - (Abstract Only) - (10-Mar-98)

ALACHLOR DISSIPATION IN SHALLOW CROPLAND SOIL - (Peer Reviewed Journal) - (05-Jan-98)

REDUCING AGRICULTURE'S CONTRIBUTION TO NITRATE CONTAMINATION OF SURFACE WATERS - (Proceedings) - (18-Nov-97)

PARTICULATE ORGANIC MATTER AND AGGREGATE FORMATION - (Abstract Only) - (31-Oct-97)

WATERSHED SCALE ASSESSMENTS OF SOIL QUALITY AT TWO IOWA LOCATIONS - (Abstract Only) - (31-Oct-97)

LONG-TERM CORN SILAGE REMOVAL AND SOIL CARBON WITH MOLDBOARD PLOWING - (Abstract Only) - (31-Oct-97)

IMPACT OF SOIL ORGANISMS AND ORGANIC MATTER ON SOIL STRUCTURE - (Book / Chapter) - (30-Sep-97)

SPATIAL AND SEASONAL FACTORS AFFECTING CROP YIELD AND N REMOVAL FROM GLACIAL TILL SOILS - (Proceedings) - (10-Sep-97)

SUBSURFACE DRAIN WATER QUALITY AS AFFECTED BY MANURE APPLICATION - (Other) - (14-Aug-97)

SUBSURFACE DRAIN WATER QUALITY AS AFFECTED BY MANURE APPLICATION - (Abstract Only) - (14-Aug-97)

CROPPING SYSTEM EFFECTS ON N REMOVAL, SOIL N, AGGREGATE STABILITY, AND SUBSEQUENT CORN GRAIN YIELD - (Peer Reviewed Journal) - (13-Aug-97)

EFFECT OF INJECT METHOD OF LIQUID MANURE APPLICATION ON CROP YIELD AND NITROGEN CONTAMINATION OF SHALLOW GROUNDWATER - (Proceedings) - (10-Aug-97)

EXPERIMENTAL VERIFICATION OF SIMULATED SOIL ORGANIC MATTER POOLS - (Book / Chapter) - (20-Dec-96)

SPATIAL VARIABILITY ANALYSIS: A FIRST STEP IN SITE-SPECIFIC MANAGEMENT - (Proceedings) - (20-Nov-96)

IMPACT OF MANURE AND N-MANAGEMENT SYSTEMS ON WATER QUALITY - (Proceedings) - (20-Nov-96)

WATERSHED-SCALE ASSESSMENT OF SOIL BIOCHEMICAL PROPERTIES: A PRELUDE TO SOIL QUALITY - (Abstract Only) - (08-Nov-96)

PARTICULATE ORGANIC MATTER IN STABLE AND UNSTABLE AGGREGATES - (Abstract Only) - (08-Nov-96)

SEASONAL TRENDS IN LABILE ORGANIC MATTER AS AFFECTED BY CROP ROTATION AND TILLAGE - (Abstract Only) - (08-Nov-96)

USING SMALL GRAIN COVER CROPS TO MANAGE NITROGEN IN THE MIDWEST - (Abstract Only) - (08-Nov-96)

SOIL PROPERTY CONTRIBUTIONS TO YIELD VARIATION PATTERNS - (Abstract Only) - (26-Jun-96)

SOIL PROPERTY CONTRIBUTIONS TO YIELD VARIATION PATTERNS - (Proceedings) - (26-Jun-96)

SOIL-TEST VARIABILITY IN ADJACENT IOWA FIELDS - (Proceedings) - (26-Jun-96)

IMPACT OF SOIL ORGANISMS AND ORGANIC MATTER ON SOIL ERODIBILITY - (Abstract Only) - (31-May-96)

POTENTIALLY MINERALIZABLE NITROGEN AS AN INDICATOR OF ACTIVE SOIL N - (Book / Chapter) - (01-Apr-96)

N MINERALIZATION POTENTIAL IN SOIL AND ITS RELATIONSHIP TO SOLUBLE ORGANIC N IN TILE DRAIN WATER - (Abstract Only) - (03-Nov-95)

ROOT- AND SHOOT-DERIVED PARTICULATE ORGANIC MATTER - (Abstract Only) - (03-Nov-95)

SOIL PHYSICAL PROPERTIES IN NO-TILL WITH AND WITHOUT SWEEP CULTIVATION FOR WEED CONTROL - (Abstract Only) - (03-Nov-95)

ASSESSING SOIL QUALITY BY TESTING ORGANIC MATTER - (Proceedings) - (01-Jul-95)

NITROGEN MANAGEMENT SYSTEMS FOR SUSTAINABLE CROP PRODUCTION AND WATER QUALITY ENHANCEMENT - (Proceedings) - (15-Jan-95)

SWINE MANURE AND N-MANAGEMENT SYSTEMS: IMPACT ON GROUNDWATER QUALITY - (Proceedings) - (05-Jan-95)

PROCESSES CONTROLLING ATRAZINE LEACHING IN THE POTHOLE TOPOGRAPHY OF CENTRAL IOWA - (Proceedings) - (05-Jan-95)

NUTRIENT USE EFFICIENCY: AN INNOVATIVE APPROACH TO AN OLD PHILOSOPHY - (Abstract Only) - (07-Dec-94)

SOIL QUALITY RESEARCH AT THE NATIONAL SOIL TILTH LABORATORY - (Abstract Only) - (05-Aug-94)