Projects

ECOLOGICALLY-BASED SOIL MANAGEMENT FOR SUSTAINABLE AGRICULTURE AND RESOURCE CONSERVATION Appropriated (D)   Accession Number: 409570

ESTIMATING SUSTAINABILITY OF CORN STOVER REMOVAL FOR BIOMASS ETHANOL PRODUCTION IN SELECTED CORN BELT SITES Nonfunded Cooperative Agreement (N)   Accession Number: 410168

CONSERVATION EFFECTS ASSESSMENT PROJECT Reimbursable (R)   Accession Number: 412039

REGIONAL CORN STOVER REMOVAL IMPACT STUDY - AMES Reimbursable (R)   Accession Number: 413210

SOCIAL IMPLICATIONS OF ALTERNATIVE FARMING SYSTEMS Specific Cooperative Agreement (S)   Accession Number: 412367

CONSERVATION EFFECTS ASSESSMENT PROJECT (CEAP) DATABASE DEVELOPMENT AND DEPLOYMENT Specific Cooperative Agreement (S)   Accession Number: 412572

Publications

Vertical distribution of corn stover dry mass - (Abstract)

Johnson, J.M., Wilhelm, W.W., Lightle, D., Karlen, D.L., Baker, J.M., Ochsner, T.E., Novak, J.M., Halvorson, A.D., Archer, D.W., Laird, D.A. 2008. Vertical distribution of corn stover dry mass [abstract][CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts. ASA-CSSA-SSSA Annual Meeting. Oct. 5-9, 2008, Houston, TX.

Recognizing and reducing environmental risks to improve the benefits of bioenergy - (Abstract) - (09-Sep-08)

Sustainable corn-based bioenergy farming systems - (Abstract)

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.

Soil Quality Assessment: Past, Present, and Future - (Peer Reviewed Journal) - (15-Aug-08)

Grass-Based Farming Systems: Soil Conservation and Environmental Quality - (Book/Chapter) - (01-Aug-08)

Rainfed farming systems in the USA - (Book/Chapter) - (29-May-08)

Sustainability Indicators: A Scientific Assessment - (Other)

Karlen, D.L. 2008. Book Review of Sustainability Indicators: A Scientific Assessment. Journal of Environmental Quality. 37:1663.

Comparison of two soil quality indexes to evaluate cropping systems in northern Colorado - (Peer Reviewed Journal)

Zobeck, T.M., Halvorson, A.D., Wienhold, B.J., Acosta Martinez, V., Karlen, D.L. 2008. Comparison of two soil quality indexes to evaluate cropping systems in northern Colorado. Journal of Soil and Water Conservation. 63(5): 329-338.

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.

Agriculture in the U.S. Corn Belt: Past, Present, and Future - (Abstract)

Karlen, D.L., Singer, J.W., Gibson, L.R. 2007. Agriculture in the U.S. Corn Belt: Past, Present, and Future [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 4-8, 2007, New Orleans, LA.

Will Sulfur Limit Bio-fuel Corn Production? - (Abstract)

Kovar, J.L., Karlen, D.L. 2007. Will Sulfur Limit Bio-fuel Corn Production? [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 4-8, 2007, New Orleans, LA.

Evaluation of Organic Pest Management Treatments for Bean Leaf Beetle in Soybean in Iowa - (Abstract)

Mckern, A., Rosmann, M., Delate, K., Karlen, D.L. 2007. Evaluation of Organic Pest Management Treatments for Bean Leaf Beetle in Soybean in Iowa [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 4-8, 2007, New Orleans, LA.

Balancing Bioenergy Opportunities on Your Natural Resources Base - (Proceedings/Symposium)

Karlen, D.L. 2007. Balancing Bioenergy Opportunities on Your Natural Resources Base [CD-ROM]. Indiana Crop Advisors Conference Meeting Proceedings. Dec. 18-19, 2007. Indianapolis, IN.

Soil Fertility Management Strategies -- Philosophies, Crop Response and Costs - (Other)

Exner, R., Delate, K., Karlen, D.L. 2007. Soil Fertility Management Strategies -- Philosophies, Crop Response and Costs. Iowa State University - University Extension. p. 2-10.

Soil Management Assessment Framework: Developing indicator scoring curves for soil enzymes - (Abstract)

Stott, D.E., Wienhold, B.J., Karlen, D.L., Andrews, S.S. 2007. Soil Management Assessment Framework: Developing indicator scoring curves for soil enzymes. Soil Science Society of America Annual Meeting, November 4-8, 2007, New Orleans, Louisiana. 2007 CDROM.

Cover Crop and Manure Effects on Soil Properties in a Corn Silage System - (Abstract)

Jokela, W.E., Grabber, J.H., Karlen, D.L., Balser, T.C. 2007. Cover Crop and Manure Effects on Soil Properties in a Corn Silage System. In: American Society of Agronomy Abstracts. American Society of Agronomy Annual Meeting, November 4-8, 2007, New Orleans, Louisiana. 2007 CDROM.

Balancing crop biomass for bioenergy and conservation - (Abstract)

Karlen, D.L., Johnson, J.M., Wilhelm, W.W., Follett, R.F. 2007. Balancing crop biomass for bioenergy and conservation [abstract]. Soil and Water Conservation Society, p. 64.

Corn Stover to Sustain Organic Carbon Further Constrains Biomass Supply - (Peer Reviewed Journal)

Wilhelm, W.W., Johnson, J.M., Karlen, D.L., Lightle, D. 2007. Corn Stover to Sustain Organic Carbon Further Constrains Biomass Supply. Agronomy Journal. 99:1665-1667.

EMPIRICAL ANALYSIS AND PREDICTION OF NITRATE LOADING AND CROP YIELD FOR A CORN-SOYBEAN ROTATIONS - (Peer Reviewed Journal)

Malone, R.W., Ma, L., Karlen, D.L., Meade, T.G., Meek, D.W., Heilman, P., Kanwar, R.S., Hatfield, J.L. 2007. Empirical analysis and prediction of nitrate loading and crop yield for a corn-soybean rotations. Geoderma. 140:223-234.

Simulated N Management Effects on Corn Yield and Tile-Drainage Nitrate Loss - (Peer Reviewed Journal)

Malone, R.W., Ma, L., Heilman, P., Karlen, D.L., Kanwar, R.S., Hatfield, J.L. 2007. Simulated N Management Effects on Corn Yield and Tile-Drainage Nitrate Loss. Geoderma. 140:272-283.

Evaluating and predicting agricultural management effects under tile-drainage using modified APSIM - (Peer Reviewed Journal)

Malone, R.W., Huth, N., Carberry, P.S., Ma, L., Kaspar, T.C., Karlen, D.L., Meade, T.G., Kanwar, R.S., Heilman, P. 2007. Evaluating and predicting agricultural management effects under tile-drainage using modified APSIM. Geoderma. 140:310-322.

Soil Profile Nitrate Response to Nitrogen Fertilization of Winter Triticale - (Peer Reviewed Journal)

Nance, C.D., Gibson, L.R., Karlen, D.L. 2007. Soil Profile Nitrate Response to Nitrogen Fertilization of Winter Triticale. Soil Science Society of America Journal. 71:1343-1351.

Soil Quality Assessment -- A Value Added Opportunity for Soil Testing Laboratories - (Proceedings/Symposium)

Karlen, D.L., Zobeck, T.M., Wienhold, B.J. 2007. Soil Quality Assessment -- A Value Added Opportunity for Soil Testing Laboratories. In: Proceedings of the Eighteenth Soil/Plant Analysts Workshop, February 27-28, 2007, Bettendorf, Iowa. North Central Extension and Research Activity (NCERA-13), Michigan State University, East Lansing, Michigan 48824-1325. p.63-69.

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.

Crop Residue Removal Effects on Production Costs and Soil Quality - (Abstract)

Karlen, D.L., Birrell, S.J., Radtke, C.J., Wilhelm, W.W. 2006. Crop Residue Removal Effects on Production Costs and Soil Quality. In: ASA-CSSA-SSSA Annual Meeting Abstracts. ASA-CSSA-SSSA Annual Meeting, Indianapolis, Indiana, November 12-16, 2006. 2006 CD-ROM.

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.

SIMULATING MANAGEMENT EFFECTS ON CROP PRODUCTION, TILE DRAINAGE, AND WATER QUALITY USING RZWQM-DSSAT - (Peer Reviewed Journal)

Anapalli, S., Ma, L., Malone, R.W., Heilman, P., Ahuja, L.R., Kanwar, R., Karlen, D.L., Hoogenboom, G. 2007. Simulating management effects on crop production, tile drainage, and water quality using RZWQM-DSSAT. Geoderma 140:3 (2007)297-309. Published on-line 5/23/2007. doi:10.1016/j.geoderma.2007.04.013.

Response to "Comments on 'Need for a Soil-based Approach in managing Nitrogen Fertilizers for Profitable Corn Production' and 'Soil Organic Nitrogen Enrichment Following Soybean in an Iowa Corn-Soybean Rotation'" - (Other)

Jaynes, D.B., Olk, D.C., Colvin, T., Kaspar, T.C., Karlen, D.L. 2007. Response to "Comments on 'Need for a Soil-based Approach in managing Nitrogen Fertilizers for Profitable Corn Production' and 'Soil Organic Nitrogen Enrichment Following Soybean in an Iowa Corn-Soybean Rotation'". Soil Science Society of America Journal. 71(1):255.

Sustainable Production of Crop Residue as a Cellulosic Ethanol Feedstock: REAP ¿ Renewable Energy Assessment Project - (Abstract)

Jaradat, A.A., Johnson, J.M., Karlen, D.L., Wilhelm, W.W. 2006. Sustainable Production of Crop Residue as a Cellulosic Ethanol Feedstock: REAP ¿ Renewable Energy Assessment Project sponsored by USDA & DOE. Oct 10-12 2006, St Louis, MO. Meeting Abstract.

Winter triticale response to nitrogen fertilization when grown after corn or soybean - (Peer Reviewed Journal)

Gibson, L.R., Nance, C.D., Karlen, D.L. 2007. Winter triticale response to nitrogen fertilization when grown after corn or soybean. Agronomy Journal. 99:49-58.

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

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.

Crop Residue as Feedstock for the New Bioeconomy: Opportunities and Roadblocks - (Abstract)

Wilhelm, W.W., Varvel, G.E., Karlen, D.L., Johnson, J.M., Baker, J. 2006. Crop Residue as Feedstock for the New Bioeconomy: Opportunities and Roadblocks. In Annual meeting abstract [CD-ROM]. ASA, CSSA, SSSA. Madison, WI.

ENGINEERING, NUTRIENT REMOVAL, AND FEEDSTOCK CONVERSION EVALUATIONS OF FOUR CORN STOVER HARVEST SCENARIOS - (Peer Reviewed Journal)

Hoskinson, R., Karlen, D.L., Birrell, S.J., Radtke, C.W., Wilhelm, W.W. 2006. Engineering, nutrient removal, and feedstock conversion evaluations of four corn stover harvest scenarios. Biomass and Bioenergy. 31(2-3): 126-136. Available: http://www.sciencedirect.com/science?

EMPIRICAL MODELING OF NITRATE LOADING AND CROP YIELD FOR CORN-SOYBEAN ROTATIONS IN IOWA - (Abstract) - (11-May-06)

APPLICATION OF THE ANNAGNPS MODEL TO THE WALNUT CREEK, IA CEAP BENCHMARK WATERSHED - (Abstract)

Dinnes, D.L., Jaynes, D.B., Karlen, D.L., Bingner, R.L., Yuan, Y. 2006. Application of the ANNAGNPS model to the Walnut Creek, IA CEAP benchmark watershed. 2006 USDA-ARS CEAP Watershed Assessment Study Annual Meeting. Available: www.nrcs.usda.gov/TECHNICAL/nri/ceap/watersheds/2006meeting.html.

IS POTASSIUM LIMITING NO-TILL CORN YIELDS? - (Proceedings/Symposium)

Karlen, D.L., Kovar, J.L. 2006. Is potassium limiting no-till corn yields? Proceedings of Great Plains Soil Fertility Conference. 11:206-211.

NO-TILL CORN RESPONSE TO BANDED K ON DES MOINES LOBE SOILS - (Proceedings/Symposium)

Karlen, D.L., Kovar, J.L. 2006. No-till corn response to banded K on Des Moines lobe soils. In: Fluid Fertilizer Foundation Symposium Proceedings. Fluid Feritlizer Forum 2006, February 12-14, 2006, Scottsdale, AZ. 2006 CD-ROM

SOIL QUALITY: INDICES AND APPRAISAL. PP. 67-72. PROC. INTERNATIONAL CONFERENCE ON SOIL, WATER, AND ENVIRONMENTAL QUALITY ¿ ISSUES AND STRATEGIES. NEW DELHI, INDIA. - (Proceedings/Symposium)

Wienhold, B.J., Andrews, S.S., Karlen, D.L. 2006. Soil quality: indices and appraisal. pp. 67-72. Proc. International Conference on Soil, Water, and Environmental Quality ¿ issues and strategies. New Delhi, India.. International Symposium on Ecological Indicators and Indices.

PLANTING DATE EFFECTS ON WINTER TRITICALE GRAIN YIELD AND YIELD COMMPONENTS - (Peer Reviewed Journal)

Schwarte, A.J., Gibson, L.R., Karlen, D.L., Liebman, M., Jannink, J. 2006. Planting date effects on winter triticale grain yield and yield commponents. Crop Science. 46:1218-1224.

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.

THE SOIL RESOURCE MANAGEMENT NATIONAL PROGRAM -- CHALLENGES AND OPPORTUNITIES - (Abstract)

Karlen, D.L., Franzluebbers, A.J., Busscher, W.J., Baumhardt, R.L., Wright, R.J., Jawson, M.D. 2005. The soil resource management national program -- challenges and opportunities [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 6-10, 2005, Salt Lake City, UT.

SUSTAINING SOIL RESOURCES WHILE MANAGING NUTRIENTS - (Proceedings/Symposium)

Jaynes, D.B., Karlen, D.L. 2005. Sustaining soil resources while managing nutrients. In: Final Report: Gulf Hypoxia and Local Water Quality Concerns Workshop, September 26-28, 2005, Ames, Iowa. p. 149-158.

IDENTIFYING SPATIAL PATTERNS OF EROSION FOR USE IN PRECISION CONSERVATION - (Peer Reviewed Journal)

Schumacher, J.A., Venteris, E.R., Mccarty, G.W., Ritchie, J.C., Kaspar, T.C., Colvin, T.S., Jaynes, D.B., Karlen, D.L., Fenton, T.E., Schumacher, T.E., Lindstrom, M.J. 2005. Identifying spatial patterns of erosion for use in precision conservation. Journal of Soil and Water Conservation. 60(6):355-362.

IS K THE CINDERELLA NUTRIENT FOR REDUCED-TILL SYSTEMS? - (Trade Journal)

Karlen, D.L., Kovar, J.L. 2005. Is K the Cinderella nutrient for reduced-till systems? Fluid Journal. 13(4):8-11.

ASSESSING SOIL FERTILITY IN THE SOUTH FORK WATERSHED OF THE IOWA RIVER - (Proceedings/Symposium)

Nepple, J., Tomer, M.D., Karlen, D.L. 2005. Assessing soil fertility in the south fork watershed of the Iowa river. Soil Conservation and Water Quality Symposium Proceedings. Available: http://www.swcs.org/en/swcs_international_conferences/2005_annual_conference/index.cfm?nodeID=7456&audienceID=1

SOIL AMINO ACID ENRICHMENT FOLLOWING SOYBEAN IN AN IOWA CORN-SOYBEAN ROTATION 1753 - (Peer Reviewed Journal)

Martens, D.A., Jaynes, D.B., Colvin, T.S., Kaspar, T.C., Karlen, D.L. 2006. Soil amino acid enrichment following soybean in an Iowa corn-soybean rotation. Soil Science Society of America Journal. 70:382-392.

PROFIT AND YIELD OF TILLAGE IN COTTON PRODUCTION SYSTEMS - (Peer Reviewed Journal)

Buman, R.A., Alessi, B.A., Bradley, J.F., Hatfield, J.L., Karlen, D.L. 2005. Profit and yield of tillage in cotton production systems. Journal of Soil and Water Conservation Society. 60(5):235-242.

PLANTING DATE EFFECTS ON WINTER TRITICALE DRY MATTER AND NITROGEN ACCUMULATION - (Peer Reviewed Journal)

Schwarte, A.J., Gibson, L.R., Karlen, D.L., Liebman, M., Jannink, J. 2005. Planting date effects on winter triticale dry matter and nitrogen accumulation. Agronomy Journal. 97:1333-1341.

IS K THE CINDERELLA NUTRIENT FOR REDUCED TILLAGE SYSTEMS? - (Proceedings/Symposium)

Karlen, D.L., Kovar, J.L. 2005. Is K the Cinderella nutrient for reduced tillage systems? [CD-ROM] In: Fluid Fertilizer Foundation Symposium Proceedings, Feb. 13-15, 2005, Scottsdale, Arizona.

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.

EFFECTS OF LIQUID SWINE MANURE APPLICATIONS ON NO3-N LEACHING LOSSES TO SUBSURFACE DRAINAGE WATER FROM LOAMY SOILS IN IOWA - (Peer Reviewed Journal)

Bakhsh, A., Kanwar, R.S., Karlen, D.L. 2005. Effects of liquid swine manure applications on NO3-N leaching losses to subsurface drainage water from loamy soils in Iowa. Agriculture Ecosystems and the Environment. 105:118-128.

EFFECTS OF GRAZING CORN STALKS ON SOIL PHYSICAL PROPERTIES - (Proceedings/Symposium)

Karlen, D.L., Clark, J., Russell, J., Busby, D., Peterson, B., Singleton, P. 2005. Effects of grazing corn stalks on soil physical properties. In: Proceedings of the Heart of American Grazing Conference, January 19-20, 2005, Wilmington, OH.

SOIL, WHEAT, AND SORGHUM RESPONSE TO TILLAGE UNDER RHIZOTRON CONDITIONS - (Abstract)

Karlen, D.L., Jaynes, D.B., Pellack, L.S., Heikens, K.E. 2004. Soil, Wheat, and Sorghum Response to Tillage Under Rhizotron Conditions [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts. Madison, Wisconsin.

IDENTIFYING SPATIAL PATTERNS OF EROSION FOR USE IN PRECISION CONSERVATION - (Abstract)

Schumacher, J.A., Venteris, E.R., Mccarty, G.W., Ritchie, J.C., Kaspar, T.C., Colvin, T.S., Jaynes, D.B., Karlen, D.L., Fenton, T.E., Schumacher, T.E., Lindstrom, M.J. 2004. Identifying Spatial Patterns of Erosion for Use in Precision Conservation [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts. Madison, Wisconsin. p. 4780.

PROFIT, YIELD, AND SOIL QUALITY EFFECTS OF TILLAGE IN CORN / SOYBEAN ROTATIONS - (Peer Reviewed Journal)

Buman, R.A., Alessi, B.A., Hatfield, J.L., Karlen, D.L. 2004. Profit, yield, and soil quality effects of tillage in corn / soybean rotations. Journal of Soil and Water Conservation. 59:260-270.

IMPLEMENTING THE SMAF FOR ENVIRONMENTAL QUALITY POLICY: WATER QUALITY IMPLICATIONS IN IOWA - (Abstract)

Hatfield, J.L., Karlen, D.L. 2004. Implementing the SMAF for environmental quality policy: water quality implications in Iowa [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.

FORAGES FOR CONSERVATION AND IMPROVED SOIL QUALITY - (Book/Chapter)

Karlen, D.L., Lemunyon, J.L., Singer, J.W. 2006. Forages for Conservation and Improved Soil Quality. In: Barnes, R.F., Nelson, C.J., Moore, K.J., Collins, M., editors. Sixth Edition of Forages, Volume II The Science of Grassland Agriculture. Ames, IA: Blackwell Publishing, Inc. p-149-166.

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.

SOIL DEGRADATION IN THE UNITED STATES: EXTENT, SEVERITY, AND TRENDS (A BOOK REVIEW) - (Other)

Karlen, D.L. 2004. Soil Degradation in the United States: Extent, Severity, and Trends (A Book Review). Soil Science. 169(8):609-611.

CORN-SOYBEAN AND ALTERNATIVE CROPPING SYSTEMS EFFECTS ON NO3-N LEACHING LOSSES IN SUBSURFACE DRAINAGE WATER - (Peer Reviewed Journal)

Kanwar, R.S., Cruse, R., Ghaffarzadeh, M., Bakhsh, A., Karlen, D.L., Bailey, T. 2005. Corn-soybean and alternative cropping systems effects on NO3-N leaching losses in subsurface drainage water. Applied Engineering in Agriculture. 21(2):181-188.

SOIL SURFACE PROPERTY AND SOYBEAN YIELD RESPONSE TO CORN STOVER GRAZING - (Peer Reviewed Journal)

Clark, J.T., Russell, J.R., Karlen, D.L., Singleton, P.L., Busby, W.D., Peterson, B.C. 2004. Corn Stover Grazing Effects on Soil Physical Properties and Subsequent Soybean Yield. Agronomy Journal. 96(5):1364-1371.

ORGANIC SOYBEAN PRODUCTION: CHALLENGES AND PERSPECTIVES OF AN INCREASING TREND - (Proceedings/Symposium)

Karlen, D.L., Delate, K., Turnbull, R., Boes, J. 2004. Organic soybean production: challenges and perspectives of an increasing trend. Soybean Research World Conference Proceedings. p. 319-327.

THE CONSERVATION AND IMPROVEMEMT OF SLOPING LAND, VOL. 1: PRACTICAL UNDERSTANDING (A BOOK REVIEW) - (Other)

Karlen, D.L. 2004. The Conservation and Improvememt of Sloping Land, Vol. 1: Practical Understanding (a book review). Journal of Environmental Quality. 33:1577-1578.

RELATIONSHIP OF CORN AND SOYBEAN YIELD TO SOIL AND TERRAIN PROPERTIES - (Peer Reviewed Journal)

Kaspar, T.C., Pulido, D.J., Fenton, T.E., Colvin, T.S., Karlen, D.L., Jaynes, D.B., Meek, D.W. 2004. Relationship of corn and soybean yield to soil and terrain properties. Agronomy Journal. 96(3):700-709.

SOIL QUALITY AS AN INDICATOR OF SUSTAINABLE TILLAGE PRACTICES - (Peer Reviewed Journal)

Karlen, D.L. 2004. Soil quality as an indicator of sustainable tillage practices. Soil & Tillage Research. 78:129-130.

IMPLEMENT AND SOIL CONDITION EFFECTS ON TILLAGE-INDUCED EROSION - (Peer Reviewed Journal)

Marques Da Silva, J.R., Soares, J.M., Karlen, D.L. 2004. Implement and soil condition effects on tillage-induced erosion. Soil & Tillage Research. 78:207-216.

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

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.

SOIL QUALITY INDICATOR RESPONSE TO CORN STALK GRAZING - (Abstract)

CLARK, J.T., KARLEN, D.L., RUSSELL, J.R. SOIL QUALITY INDICATOR RESPONSE TO CORN STALK GRAZING. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2003. CD-ROM. MADISON, WI.

SOIL FERTILITY PARADIGMS -- CATION RATIO AND SUFFICIENCY -- COMPARED ON-FARM AND ON-STATION - (Abstract)

EXNER, D.N., DELATE, K., KARLEN, D.L. SOIL FERTILITY PARADIGMS -- CATION RATIO AND SUFFICIENCY -- COMPARED ON-FARM AND ON-STATION. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2003. CD-ROM. MADISON, WI.

SIMULATING LATE SPRING NITROGEN TEST EFFECTS ON N LEACHING AND CROP PRODUCTION - (Abstract)

MALONE, R.W., MEADE, T.G., MA, L., ANAPALLI, S.A., KANWAR, R.S., KARLEN, D.L., HATFIELD, J.L., AHUJA, L.R. SIMULATING LATE SPRING NITROGEN TEST EFFECTS ON N LEACHING AND CROP PRODUCTION. CD-ROM. MADISON, WI. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2003.

SIMULATING SWINE MANURE EFFECTS ON N LEACHING AND CROP PRODUCTION - (Abstract)

MA, L., MALONE, R.W., ANAPALLI, S.A., MEADE, T.G., KANWAR, R.S., KARLEN, D.L., HATFIELD, J.L., AHUJA, L.R. SIMULATING SWINE MANURE EFFECTS ON N LEACHING AND CROP PRODUCTION. CD-ROM. MADISON, WI. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2003.

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.

A LOOK BACK AT A LONG TERM TILLAGE EXPERIMENT AND A LOOK FORWARD AT THE POTENTIAL FOR SITE SPECIFIC TILLAGE - (Abstract)

COLVIN, T.S., TAPELA, M., MEEK, D.W., COOK, J.D., BAKER, J., CRUSE, R., KARLEN, D.L. A LOOK BACK AT A LONG TERM TILLAGE EXPERIMENT AND A LOOK FORWARD AT THE POTENTIAL FOR SITE SPECIFIC TILLAGE. TILLAGE CONFERENCE PROCEEDINGS. 2003. CD-ROM. WOOSTER, OH.

PRODUCTIVITY OF SOILS - (Other)

Karlen, D.L. 2004. Productivity of soils. In: Hillel, D., editor. Encyclopedia of Soils in the Environment. Vol. 4. p. 168-174.

TILTH - (Other)

Karlen, D.L. 2004. Tilth. In: Hillel, D., editor. Encyclopedia of Soils in the Environment. Vol. 3. p. 330-336.

SOIL QUALITY -- HUMANKIND'S FOUNDATION FOR SURVIVAL - (Peer Reviewed Journal)

KARLEN, D.L., DORAN, J.W., ANDREWS, S.S., WIENHOLD, B.J. SOIL QUALITY -- HUMANKIND'S FOUNDATION FOR SURVIVAL. JOURNAL OF SOIL AND WATER CONSERVATION. 2003. V. 58(4). P. 171-179.

SOIL QUALITY: WHY AND HOW? - (Peer Reviewed Journal)

KARLEN,D.L., DITZLER,C.A., ANDREWS,S.S., SOIL QUALITY: WHY AND HOW?, GEODERMA, 2003. Vol. 114, Issues 3-4, p. 145-156.

PROFITABILITY OF VARIOUS CORN, SOYBEAN, WHEAT, AND ALFALFA CROPPING SYSTEMS - (Peer Reviewed Journal)

SINGER, J.W., CHASE, C.A., KARLEN, D.L. PROFITABILITY OF VARIOUS CORN, SOYBEAN, WHEAT, AND ALFALFA CROPPING SYSTEMS. CROP MANAGEMENT at www.cropmanagement.org. 2003. Available from: www.cropmanagement.org/doi:10.1094/CM-2003-0130-01-RS.

SOIL QUALITY, FERTILITY, AND HEALTH - HISTORICAL CONTEXT, STATUS, AND PERSPECTIVES - (Book/Chapter)

KARLEN, D.L., WIENHOLD, B.J., ANDREWS, S.S. SOIL QUALITY, FERTILITY, AND HEALTH - HISTORICAL CONTEXT, STATUS, AND PERSPECTIVES. SCHJONNING, S., ELMHOLT, S., CHRISTENSEN, B.T., EDITORS. CAB INTERNATIONAL, CAMBRIDGE, MA. MANAGING SOIL QUALITY: CHALLENGES IN MODERN AGRICULTURE; CHAPTER 2. 2004. P. 17-33.

TRANSITION CHANGES ASSOCIATED WITH IMPLEMENTING ORGANIC AGRICULTURE RESEARCH - (Abstract)

KARLEN, D.L., DELATE, K., GIBSON, L.R., BRUMMER, E.C. TRANSITION CHANGES ASSOCIATED WITH IMPLEMENTING ORGANIC AGRICULTURE RESEARCH. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2002. CD-ROM. MADISON, WI.

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

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.

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

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.

THE NEED FOR AND ATTEMPTS AT RELATING SOIL QUALITY ASSESSMENT TO ECONOMIC RETURN - (Abstract)

ANDREWS, S.S., KARLEN, D.L., FLORA, C.B., NISSEN, T.M., MITCHELL, J.P. THE NEED FOR AND ATTEMPTS AT RELATING SOIL QUALITY ASSESSMENT TO ECONOMIC RETURN. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2002. CD-ROM. MADISON, WI.

CORN RESPONSE TO NITROGEN ACROSS LANDSCAPE POSITIONS - (Abstract)

KASPAR, T.C., COLVIN, T.S., JAYNES, D.B., KARLEN, D.L. CORN RESPONSE TO NITROGEN ACROSS LANDSCAPE POSITIONS. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2002. CD-ROM. MADISON, WI.

RAIN-FED MAIZE-SOYBEAN ROTATIONS OF NORTH AMERICA - (Other)

Karlen, D.L. 2004. Rain-fed maize-soybean rotations of North America. Dekker Encyclopedia of Plant and Crop Science. p. 358-362.

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.

BULK DENSITY AS A SOIL QUALITY INDICATOR DURING CONVERSION TO NO-TILLAGE - (Peer Reviewed Journal)

Logsdon, S.D., Karlen, D.L. 2004. Bulk density as a soil quality indicator during conversion to no-tillage. Soil & Tillage Research. 78:143-149.

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.

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

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.

SPATIAL AND TEMPORAL VARIABILITY IN CORN YIELD GROWN UNDER DIFFERENT TILLAGE SYSTEMS - (Proceedings/Symposium)

TAPELA, M., COLVIN, T.S., KARLEN, D.L. SPATIAL AND TEMPORAL VARIABILITY IN CORN YIELD GROWN UNDER DIFFERENT TILLAGE SYSTEMS. INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE ABSTRACTS & PROCEEDINGS. 2002. CD-ROM. MADISON, WI.

SEWAGE SLUDGE AND SOIL SUSTAINABILITY - (Proceedings/Symposium)

JAWSON, M.D., KARLEN, D.L. SEWAGE SLUDGE AND SOIL SUSTAINABILITY. MEETING ABSTRACT. 2002. P. 7-15.

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.

SPATIAL AND TEMPORAL VARIABILITY OF SOIL CARBON - (Abstract)

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.

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

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.