Projects

Reducing Nitrate Losses from Agricultural Fields with Subsurface Drainage Appropriated (D)   Accession Number: 411511

Water Quality Improvement from Management Practices in Agricultural Watersheds Appropriated (D)   Accession Number: 411795

Evaluation of Crop Yield Variability Across Crop Production Fields in Central Iowa Specific Cooperative Agreement (S)   Accession Number: 414249

Development of a Gis-Based Rusle2 Interface Template for Use with Iowa's Lidar Digital Elevation Data Specific Cooperative Agreement (S)   Accession Number: 414432

Publications

Winter Cover Crop Effects on Nitrate Leaching in Subsurface Drainage as Simulated by RZWQM-DSSAT - (Peer Reviewed Journal) - (10-Sep-08)

Modeling Nitrogen and Water Management Effects in a Wheat-Maize Double-Cropping System - (Peer Reviewed Journal)

Fang, Q., Ma, L., Yu, Q., Malone, R.W., Saseendran, S.A., Ahuja, L.R. 2008. Modeling Nitrogen and Water Management Effects in a Wheat-Maize Double-Cropping System. Journal of Environmental Quality. 2008 37: 2232-2242.

Simulated Effects of Nitrogen Management and Soil Microbes on Soil Nitrogen Balance and Crop Production - (Peer Reviewed Journal)

Ma, L., Malone, R.W., Jaynes, D.B., Thorp, K.R., Ahuja, L.R. 2008. Simulated Effects of Nitrogen Management and Soil Microbes on Soil Nitrogen Balance and Crop Production. Soil Science Society of America Journal. 72:1594-1603.

Simulated Corn Stover Removal Effects on Soil Organic Carbon and Nitrogen Dynamics - (Abstract)

Ma, L., Malone, R.W., Ahuja, L.R., Karlen, D.L., Saseendran, S.A. 2009. Simulated Corn Stover Removal Effects on Soil Organic Carbon and Nitrogen Dynamics. American Society of Agronomy Meetings, Houston, TX, October 5, 2009.

Simulating Long-Term Performance of Drainage Water Management Across the Midwestern United States - (Peer Reviewed Journal)

Thorp, K.R., Jaynes, D.B., Malone, R.W. 2008. Simulating long-term performance of drainage water management across the midwestern United States. Transactions of the ASABE. 51(3):961-976.

Using RZWQM-DSSAT to Stimulate Drainage Water Management Across the United States Corn Belt - (Abstract)

Thorp, K.R., Jaynes, D.B. 2007. Using RZWQM-DSSAT to Stimulate Drainage Water Management Across the United States Corn Belt [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 4-8, 2007, New Orleans, LA.

N uptake effects on N loss in tile drainage as estimated by RZWQM - (Book/Chapter) - (16-Oct-07)

Impact of glyphosate-tolerant soybean and glufosinate-tolerant corn production on herbicide losses in surface runoff - (Peer Reviewed Journal)

Shipitalo, M.J., Malone, R.W., Owens, L.B. 2008. Impact of glyphosate-tolerant soybean and glufosinate-tolerant corn production on herbicide losses in surface runoff. Journal of Environmental Quality. 37:401-408.

System Modeling for Soil and Water Research and Management: Current Status and Needs for the 21st Century - (Peer Reviewed Journal)

Ma, L., Ahuja, L.R., Malone, R.W. 2007. System Modeling for Soil and Water Research and Management: Current Status and Needs for the 21st Century. Transactions of the ASABE. 50(5):1705-1713.

Spectral Procedures Enhance the Analysis of Three Agricultural Time Series - (Abstract)

Meek, D.W., Prueger, J.H., Tomer, M.D., Malone, R.W. 2007. Spectral Procedures Enhance the Analysis of Three Agricultural Time Series [abstract]. In: Applied Statistics In Agriculture Conference Proceedings, April 30-May 1, 2007, Manhattan, KS. p. 17.

Simulating long-term effects of nitrogen fertilizer application rates on corn yield and nitrogen dynamics - (Peer Reviewed Journal)

Thorp, K.R., Malone, R.W., Jaynes, D.B. 2007. Simulating long-term effects of nitrogen fertilizer application rates on corn yield and nitrogen dynamics. Transactions of the ASABE. 50(4):1287-1303.

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.

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.

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.

Modeling Pesticide Fate and Nonideal Transport From A Slow Release, Pesticide Treated Seed - (Peer Reviewed Journal)

Sabbagh, G.J., Fox, G.A., Ma, L., Malone, R.W., Arthur, E.L., Dyer, D.G. 2007. Modeling Pesticide Fate and Nonideal Transport From A Slow Release, Pesticide Treated Seed. Transactions of the ASABE 50(2):523-532, 2007.

Using RZWQM and Drainmod NII to Simulate Drainage Water Management in Iowa - (Abstract)

Thorp, K.R., Jaynes, D.B., Malone, R.W. 2006. Using RZWQM and Drainmod NII to Simulate Drainage Water Management in Iowa [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 12-16, 2006, Indianapolis, IN.

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.

Role of Landscape and Hydrologic Attributes in Developing and Interpreting Yield Clusters - (Peer Reviewed Journal)

Kanwar, R.S., Bakhsh, A., Malone, R.W. 2007. Role of landscape and hydrologic attributes in developing and interpreting yield clusters. Geoderma. 140:235-246.

Applications of Agricultural System Models in Assessing and Managing Contamination of the Soil-Water-Atmosphere Continuum in Agriculture - (Proceedings/Symposium)

Ahuja, L.R., Ma, L., Saseendran, A., Malone, R.W. 2006. Applications of agricultural system models in assessing and managing contamination of the soil-water-atmosphere continuum in agriculture. International Symposium for the Agricultural Environment. International Symposium for the Agricultural Environment.

Sensitivity of Tile Drainage Flow and Crop Yield on Measured and Calibrated Soil Hydraulic Properties - (Peer Reviewed Journal)

Ma, L., Malone, R.W., Heilman, P., Ahuja, L.R., Meade, T.G., Anapalli, S.S., Ascough Ii, J.C., Kanwar, R.S. 2007. Sensitivity of tile drainage flow and crop yield on measured and calibrated soil hydraulic properties. Geoderma 140:3(2007) 284-296. Published on-line 5/16/2007. doi:10.1016/j.geoderma.2007.04.012

Rzwqm Simulated Effects of Crop Rotation, Tillage, and Controlled Drainage on Crop Yield and Nitrate-N Loss in Drain Flow. - (Peer Reviewed Journal)

Ma, L., Malone, R.W., Heilman, P., Jaynes, D.B., Ahuja, L.R., Saseendran, S.A., Kanwar, R.S., Ascough II, J.C. 2007. RZWQM simulated effects of crop rotation, tillage, and controlled drainage on crop yield and nitrate-n loss in drain flow. Geoderma 140(3):260-271. doi:10/1016/j/geoderma.2007.04.010.

Decision Support for Nitrogen Management in Tile-Drained Agriculture 1825 - (Proceedings/Symposium)

Heilman, P., Malone, R.W., Ma, L., Hatfield, J.L., Ahuja, L.R., Ayen, J., Boyle, K., Kanwar, R. 2006. Decision support for nitrogen management in tile-drained agriculture. In: Voinov, A., Jakeman, A.J., Rizzoli, A.E. (eds). Proceedings of the iEMSs Third Biennial Meeting: "Summit on Environmental Modelling and Software". International Environmental Modelling and Software Society, Burlington, USA, July 2006. CD ROM.

Application of Agricultural System Models in Assessing and Managing Contamination of Soil-Water-Atmosphere Continuum in Agriculture - (Abstract)

Ahuja, L.R., Ma, L., Anapalli, S., Malone, R.W. 2006. Application of Agricultural System Models in Assessing and Managing Contamination of Soil-Water-Atmosphere Continuum in Agriculture. International Symposium for the Agricultural Environment. Ghent, Belgium. September 4-6, 2006. (Abstract).

Empirical Modeling of Nitrate Loading and Crop Yield for Corn-Soybean Rotations in Iowa - (Abstract) - (11-May-06)

Decision Support for Nitrogen Management in Tile Drained Agriculture 1811 - (Proceedings/Symposium)

Heilman, P., Malone, R.W., Ma, L., Hatfield, J.L., Ahuja, L.R., Ayen, J., Boyle, K., Kanwar, R. 2006. Decision support for nitrogen management in tile drained agriculture. In: Jakeman, A., Rizzoli, A. (eds). Proceedings of the IEMSs Third Biennial Meeting: "Summit on Environmental Modelling and Software". International Environmental Modelling and Software Society, Burlington, USA, July 2006. CD ROM.

Compost Effect on Water Retention and Native Plant Establishment on a Construction Embankment - (Peer Reviewed Journal)

Singer, J.W., Malone, R.W., Tomer, M.D., Meade, T.G., Welch, J. 2006. Compost effect on water retention and native plant establishment on a construction embankment. Journal of Soil and Water Conservation. 61(5):268-273.

Residual and Contact Herbicide Losses in Surface Runoff from Conservation Tilled Watersheds Planted with Transgenic, Herbicide-Tolerant, Corn and Soybean - (Abstract) - (01-Jan-06)

Models for Hydrologic Design of Evapotranspiration Landfill Covers - (Peer Reviewed Journal)

Hauser, V.L., Gimon, D.M., Bonta, J.V., Howell, T.A., Malone, R.W., Williams, J.R. 2005. Models for hydrologic design of evapotranspiration landfill covers. Journal of Environmental Science and Technology. 39(18):7226-7233.

Field Scale Water Quality Management in the Us: State of the Art 2005 1814 - (Abstract)

Heilman, P., Ma, L., Malone, R.W. 2005. Field scale water quality management in the us: state of the art 2005. American Water Resources Association Summer Specialty Conference, Institutions for Sustainable Watershed Management: Reconciling Physical and Management Ecology in the Asia-Pacific, Honolulu, Hawaii, June 29, 2005.

Modeling Impacts of Crop Rotations, Tillage and N Management on Crop Productivity and Water Quality Using the Rzwqm-Dssat Hybrid Model - (Abstract)

Anapalli, S.S., Ma, L., Malone, R.W., Heilman, P., Ahuja, L.R., Kanwar, R.S., Meade, T.G. 2005. Modeling impacts of crop rotations, tillage and N management on crop productivity and water quality using the RZWQM-DSSAT hybrid model. ASA-CSSA-SSSA Annual Meeting, Salt Lake City, UT. Nov. 6-10, 2005.

Nitrate Losses in Subsurface Tile Drainage As Affected by Tillage, Crop Rotations, and Fertilizer Management - (Abstract)

Ma, L., Malone, R.W., Saseendran, S.A., Ahuja, L.R., Heilman, P., Kanwar, R.S. 2006. Nitrate losses in subsurface tile drainage as affected by tillage, crop rotations, and fertilizer management. Biological Systems Simulation Group Proceedings. Fort Collins, CO. April 11-13, 2006.

Residual and Contact Herbicide Transport Through Field Lysimeters Via Preferential Flow - (Peer Reviewed Journal)

Malone, R.W., Shipitalo, M.J., Wauchope, R.D., Sumner, H.R. 2004. Residual and contact herbicide transport through field lysimeters via preferential flow. Journal of Environmental Quality. 33:2141-2148.

Relationship Between Herbicide Concentration in Percolate, Percolate Breakthrough Time, and Number of Active Macropores - (Peer Reviewed Journal)

Malone, R.W., Shipitalo, M.J., Meek, D.W. 2004. Relationship between herbicide concentration in percolate, percolate breakthrough time, and number of active macropores. Transactions of the ASAE. 47(5):1453-1456.

A Graphical Tool for Water Quality Conservation Planning 1718 - (Proceedings/Symposium)

Heilman, P., Armendariz, G.A., Ma, L., Malone, R.W. 2004. A graphical tool for water quality conservation planning. Proc. 13th Internat'l. Soil Conservation Org. Conf., Conserving Soil and Water for Soc.: Sharing Solutions, July 2004, Brisbane, Australia, 6 p.

Interrelationship of Macropores and Subsurface Drainage for Conservative Tracer and Pesticide Transport - (Peer Reviewed Journal)

Fox, G.A., Malone, R.W., Sabbagh, G.J., Rojas, K.W. 2004. Interrelationship of macropores and subsurface drainage for conservative tracer and pesticide transport. Journal of Environmental Quality. 33:2281-2289.

Role of Macropores in Pesticide Transport to Groundwater - (Proceedings/Symposium)

Malone, R.W., Shipitalo, M.J., Ma, L., Ahuja, L.R., Rojas, K.W., Logsdon, S.D., Weatherington-Rice, J. 2004. Role of macropores in pesticide transport to groundwater. International Workshop on Applications, Enhancements, and Collaborations of ARS RZWQM and GPFARM Models. p. 39-40.

Agricultural Management Effects on Crop Production and N Losses to Tile Drainage in the Nashua Study: Simulation Results with Rzwqm - (Abstract)

Ma, L., Malone, R.W., Heilman, P., Anapalli, S., Ahuja, L.R., Kanwar, R.S. 2004. Agricultural management effects on crop production and n losses to tile drainage in the nashua study: simulation results with rzwqm. International Workshop on applications, enhancements and collaborations of ARS RZWQM and GPFARM. April 20-22, 2004. Fort Collins. pp. 14-15.

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.

Test of the Root Zone Water Quality Model (Rzwqm) for Predicting Runoff of Atrazine, Alachlor and Fenamiphos Species from Conventional-Tillage Corn Mesoplots - (Peer Reviewed Journal)

Ma, Q.L., Wauchope, R.D., Ma, L., Rojas, K.W., Malone, R.W., Ahuja, L.R. 2004. Test of the root zone water quality model (rzwqm) for predicting runoff of atrazine, alachlor and fenamiphos species from conventional-tillage corn mesoplots. Pest Management Science 60:267-276(2004).

Predicting Yield Loss in Indeterminate Soybean from Pod Density Using Simulated Damage Studies - (Peer Reviewed Journal)

SINGER, J.W., MALONE, R.W., MEEK, D.W., DRAKE, D. PREDICTING YIELD LOSS IN INDETERMINATE SOYBEAN FROM POD DENSITY USING SIMULATED DAMAGE STUDIES. AGRONOMY JOURNAL. 2004. V. 96. P. 584-589.

Yard Waste Compost to Enhance Soil Water Holding Capacity in the Urban-Rural Interface - (Other) - (18-Oct-03)

Herbicide Leaching As Affected by Macropore Flow and Within-Storm Rainfall Intensity Variation: a Rzwqm Simulation - (Peer Reviewed Journal)

Malone, R.W., Weatherington-Ric, J., Shipitalo, M.J., Fausey, N.R., Ma, L., Ahuja, L.R., Wauchope, R.D., Ma, Q. 2004. Herbicide leaching as affected by macropore flow and within-storm rainfall intensity variation: a RZWQM simulation. Pest Management Science. 60:277-285.

Relationship Between Herbicide Concentration in Percolate, Percolate Breakthrough Time, and Number of Active Macropores - (Proceedings/Symposium)

Malone, R.W., Shipitalo, M.J., Meek, D.W. 2003. Relationship between herbicide concentration in percolate, percolate breakthrough time, and number of active macropores. ASAE Annual International Meeting. Paper No. 032179.

Modeling Hydrology, Metribuzin Degradation, and Metribuzin Transport in Macroporous Tilled and No-Till Silt Loam Soil Using Rzwqm - (Peer Reviewed Journal)

Malone, R.W., Ma, L., Wauchope, R.D., Ahuja, L.R., Rojas, K.W., Ma, Q., Warner, R., Byers, M. 2004. Modeling hydrology, metribuzin degradation, and metribuzin transport in macroporous tilled and no-till silt loam soil using RZWQM. Pest Management Science. 60:253-266.

Evaluation of Rzwqm under Varying Irrigation Levels in Eastern Colorado - (Peer Reviewed Journal)

MA, L., NIELSEN, D.C., AHUJA, L.R., MALONE, R.W., ANAPALLI, S.S., ROJAS, K.W., HANSON, J.D., BENJAMIN, J.G. EVALUATION OF RZWQM UNDER VARYING IRRIGATION LEVELS IN EASTERN COLORADO. TRANSACTIONS OF THE AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS. 2002. v. 46. p. 39-49.

A Low-Cost Composite Water Sampler for Drip and Stream Flow - (Peer Reviewed Journal)

MALONE, R.W., BONTA, J.V., LIGHTELL, D.R. A LOW-COST COMPOSITE WATER SAMPLER FOR DRIP AND STREAM FLOW. APPLIED ENGINEERING IN AGRICULTURE. 2003. v. 19(1). p. 59-61.

Predicting the Effects of Agricultural Management Practices on Subsurface Drainage: Tile Flow - (Abstract)

MALONE, R.W., MA, L., AHUJA, L.R., KANWAR, R.S. PREDICTING THE EFFECTS OF AGRICULTURAL MANAGEMENT PRACTICES ON SUBSURFACE DRAINAGE: TILE FLOW. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2002. CD-ROM. MADISON, WI.

Predicting the Effects of Agricultural Management Practices on Subsurface Drainage: Nitrate - (Abstract)

MA, L., MALONE, R.W., AHUJA, L.R., KANWAR, R.S. PREDICTING THE EFFECTS OF AGRICULTURAL MANAGEMENT PRACTICES ON SUBSURFACE DRAINAGE: NITRATE. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2002. CD-ROM. MADISON, WI.

A Low-Cost Composite Water Sampler for Drip and Stream Flow - (Proceedings/Symposium)

MALONE, R.W., BONTA, J.V., LIGHTELL, D.R. A LOW-COST COMPOSITE WATER SAMPLER FOR DRIP AND STREAM FLOW. ASAE ANNUAL INTERNATIONAL MEETING. 2002. Paper No. 022148.