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United States Department of Agriculture

Agricultural Research Service

Related Topics

Lajpat R Ahuja (Laj)
Plains Area
Soil Science

Phone: (970) 492-7315
Fax: (970) 492-7310
Room 2054

USDA-ARS-NPA-ASRU
2150 CENTRE AVE., BLDG. D, STE. 200
FORT COLLINS , CO 80526

Projects
Modeling Soil and Soil-plant Interaction Responses to Wind and Extreme Precipitation and Temperature Events under Different Management Strategies
Appropriated (D)
  Accession Number: 430083
ENHANCED SYSTEM MODELS, MANAGEMENT AND CULTIVAR ADAPTATIONS TO LIMITED WATER AND CLIMATE CHANGE, AND TOOLS FOR PRECISION MANAGEMENT
Specific Cooperative Agreement (S)
  Accession Number: 423436
Inter-Compare and Improve Soil-Crop Models for Evaluating Effects of Climate Change and Adaptations on Production and Natural Resources
Specific Cooperative Agreement (S)
  Accession Number: 427157

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Modeling yield and biomass responses of maize cultivars to climate change under full and deficit irrigation -
Ma, L., Ahuja, L.R., Islam, A., Trout, T.J., Anapalli, S.S., Malone, R.W. 2016. Modeling yield and biomass responses of maize cultivars to climate change under full and deficit irrigation. Agricultural Water Management. 180:88-98.
Vulnerabilities and adapting irrigated and rainfed cotton to climate change in the lower Mississippi Delta Region -
Anapalli, S.S., Fisher, D.K., Reddy, K.N., Pettigrew, W.T., Sui, R., Ahuja, L.R. 2016. Vulnerabilities and adapting irrigated and rainfed cotton to climate change in the lower Mississippi Delta Region. Journal of Climate. 4(55):1-20.
Simulating N2O emissions in different tillage systems of irrigated corn using RZ-Shaw model -
Modeling GHG Emissions and Carbon Changes in Agricultural and Forest Systems to Guide Mitigation and Adaptation: Synthesis and Future Needs -
Del Grosso, S.J., Ahuja, L., Parton, W.J. 2016. Modeling GHG Emissions and Carbon Changes in Agricultural and Forest Systems to Guide Mitigation and Adaptation: Synthesis and Future Needs. In: Del Grosso, S.J., Ahuja, L., Parton, W.J., editors. Synthesis and Modeling of Greenhouse Gas Emissions and Carbon Storage in Agricultural and Forest Systems to Guide Mitigation and Adaptation. Madison, WI: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America. p. 305-317. doi: 10.2134/advagricsystmodel6.2013.0008.
Simulation of crop evapotranspiration and crop coefficient with data in weighing lysimeters -
Anapalli, S.S., Ahuja, L.R., Gowda, P., Ma, L., Marek, G.W., Evett, S.R., Howell, T.A. 2016. Simulation of crop evapotranspiration and crop coefficient with data in weighing lysimeters. Agricultural Water Management. 177:274-283.
Proposed standards for peer-reviewed publication of computer code Reprint Icon -
Timlin, D.J., David, O., Green, T.R., Fleisher, D.H., Kim, S., Ahuja, L.R. 2016. Proposed standards for peer-reviewed publication of computer code. Agronomy Journal. 108:1-5. doi: 10.2134/agronj2015-0481
Simulating maize production, water and surface energy balance, and canopy temperature under full and deficit irrigation -
Qi, Z., Ma, L., Bausch, W.C., Trout, T.J., Ahuja, L.R., Flerchinger, G.N., Fang, Q. 2016. Simulating maize production, water and surface energy balance, and canopy temperature under full and deficit irrigation. Transactions of the ASABE. 59:623-633.
Simulating maize yield and biomass with spatial variability of soil field capacity -
Ma, L., Ahuja, L.R., Trout, T., Nolan, B.T., Malone, R.W. 2015. Simulating maize yield and biomass with spatial variability of soil field capacity. Agronomy Journal. 108:171-184.
Synthesis and modeling of greenhouse gas emissions and carbon storage in agricultural and forest systems to guide mitigation and adaptation -
Del Grosso, S.J., Ahuja, L., Parton, W.J. 2016. Synthesis and Modeling of Greenhouse Gas Emissions and Carbon Storage in Agricultural and Forest Systems to Guide Mitigation and Adaptation. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, Madison, WI. 6:1-318. doi: 10.2134/advagricsystmodel6.
Dryland systems yields over 24 years as impacted by potential ET site and soil landscape position. -
Sherrod, L.A., Ahuja, L.R., Schipanski, M., Peterson, G.A. 2015. Dryland systems yields over 24 years as impacted by potential ET site and soil landscape position. Poster session presented at the ASA-CSSA-SSSA Annual Meeting, Minneapolis, MN.
Systems approach critical to agroecosystems management -
Sherrod, L.A., Ahuja, L.R., Schipanski, M., Peterson, G.A. 2015. Systems approach critical to agroecosystems management. Poster session presented at the ASA-CSSA-SSSA Annual Meeting, Minneapolis, MN.
Evaluating four N2O emission algorithms in RZWQM2 in response to N rate on an irrigated corn field -
Fang, Q., Ma, L., Halvorson, A.D., Malone, R.W., Ahuja, L.R., Del Grosso, S.J. 2015. Evaluating four N2O emission algorithms in RZWQM2 in response to N rate on an irrigated corn field. Journal of Environmental Modeling and Software. 72:56-70. doi:10.1016/j.envsoft.2015.06.005.
Simulating CO2 effects on range plant growth and water use with GP-FARM-range model -
Andales, A.A., Derner, J.D., Ahuja, L.R., Hart, R.H. 2015. Simulating CO2 effects on range plant growth and water use with GP-FARM-range model. Rangeland Ecology and Management. 68:423-431.
Nitrous oxide emission from uplands in Northern China -
Qin, S., Hu, C., Ahuja, L.R., Zhang, Y., Wang, Y. 2016. Nitrous oxide emission from uplands in Northern China. Advances in Agricultural Systems Modeling. 6:1-20.
Know your community: Model applications in field research -
Malone, R.W., Dharmasri, C., Hatfield, J.L., Ahuja, L.R. 2015. Know your community: Model applications in field research. CSA News. 60:32.
Quantifying crop water stress factors from soil water measurements in a limited irrigation experiment -
Anapalli, S.S., Trout, T.J., Ahuja, L.R., Ma, L., Mcmaster, G.S., Andales, A.A., Chavez, J.L., Ham, J. 2014. Quantifying crop water stress factors from soil water measurements in a limited irrigation experiment. Agricultural Systems. doi: org/10.1016/j.agsy.2014.11.005.
Syntheses of the current model applications for managing water and needs for experimental data and model improvements to enhance these applications -
Ahuja, L.R., Ma, L., Lascano, R.J., Anapalli, S., Fang, Q.X., Nielsen, D.C., Wang, E., Colaizzi, P.D. 2014. Syntheses of the current model applications for managing water and needs for experimental data and model improvements to enhance these applications. Advances in Agricultural Systems Modeling. pp. 399-437.
Developing and normalizing average corn crop water production functions across years and locations using a system model -
Anapalli, S.S., Ahuja, L.R., Ma, L., Trout, T.J., McMaster, G.S., Nielsen, D.C., Andales, A.A., Halvorson, A.D., Chavez, J., Ham, J.M., Fang, Q.X. 2014. Developing and normalizing average corn crop water production functions across years and locations using a system model. Agricultural Water Management. 157: 65-77. DOI: 10.1016/j.agwat.2014.09.002.
Evapotranspiration and irrigation algorithms in hydrologic modeling:Present Status and Opportunities -
Gowda, P., Marek, G.W., Baumhardt, R.L., Brauer, D.K., Evett, S.R., Ahuja, L.R. 2014. Evapotranspiration and irrigation algorithms in hydrologic modeling:Present Status and Opportunities [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 74-2. CDROM.
Using a model and forecasted weather to predict forage and livestock production for making stocking decisions in the coming growing season -
Fang, Q., Ahuja, L.R., Andales, A., Derner, J.D. 2014. Using a model and forecasted weather to predict forage and livestock production for making stocking decisions in the coming growing season. Advances in Agricultural Systems Modeling. 5:161-181.
Quantifying corn yield and water use efficiency in response to growth-stage based irrigation scheduling and seasonal water availability -
Fang, Q.X., Ma, L., Nielsen, D.C., Trout, T.J., Ahuja, L.R. 2014. Quantifying corn yield and water use efficiency in response to growth-stage based irrigation scheduling and seasonal water availability. Advances in Agricultural Systems Modeling. doi: 10.2134/advagricsystmodel5.c1.
Modeling the effects of irrigation frequencies, initial water and nitrogen on corn yield responses for best management -
Anapalli, S.S., Ahuja, L.R., Ma, L., Trout, T.J. 2014. Modeling the effects of irrigation frequencies, initial water and nitrogen on corn yield responses for best management. Advances in Agricultural Systems Modeling. pp 26-52.
Modeling weather and stocking rate threshold effects on forage and steer production in northern mixed-grass prairie Reprint Icon -
Fang, Q.X., Andales, A.A., Derner, J.D., Ahuja, L.R., Ma, L., Bartling, P.N., Reeves, J.L. 2014. Modeling weather and stocking rate threshold effects on forage and steer production in northern mixed-grass prairie. Agricultural Systems. 129:103-114.
Modeling evapotranspiration and energy balance in a wheat-maize cropping system using the revised RZ-SHAW model -
Fang, Q., Ma, L., Flerchinger, G.N., Qi, Z., Ahuja, L.R., Xing, H., Li, J., Yu, Q. 2014. Modeling evapotranspiration and energy balance in a wheat-maize cropping system using the revised RZ-SHAW model. Agriculture and Forest Meterology. 194:218-229.
Sustainability and environmental assessment of fertigation in an intensive olive grove under Mediterranean conditions -
Cameira, M.R., Pereira, A., Ahuja, L.R., Ma, L. 2014. Sustainability and environmental assessment of fertigation in an intensive olive grove under Mediterranean conditions. Agricultural Water Management. 146:346–360.
Soil and rainfall factors influencing yields of a dryland cropping system in Colorado -
Sherrod, L.A., Ahuja, L.R., Hansen, N.C., Ascough II, J.C., Westfall, D.G., Peterson, G.A. 2014. Soil and rainfall factors influencing yields of a dryland cropping system in Colorado. Agronomy Journal. 106:1179-1191.
Global warming likely reduces crop yield and water availability of the dryland cropping systems in the U.S. central Great Plains -
Ko, J., Ahuja, L.R. 2013. Global warming likely reduces crop yield and water availability of the dryland cropping systems in the U.S. central Great Plains. Journal of Crop Science and Biotechnology. 16(4):233-242.
Enhancing the water stress factors for simulation of corn (Zea mays L.) in RZWQM2 -
Anapalli, S.S., Ahuja, L.R., Ma, L., Nielsen, D.C., Trout, T.J., Andales, A.A., Chavez, J.L., Ham, J. 2013. Enhancing the water stress factors for simulation of corn (Zea mays L.) in RZWQM2. Agronomy Journal. 10:2134.
Quantifying climate and management effects on regional crop yield and N leaching in the North China Plain -
Fang, Q.X., Ma, L., Yu, Q., Hu, C.S., Li, X.X., Malone, R.W., Ahuja, L.R. 2013. Quantifying climate and management effects on regional crop yield and N leaching in the North China Plain. Journal of Environmental Quality. 42:1466–1479.
Big data computing: Building a vision for ARS information management -
James, R.R., Lawrence, C.J., Papiernik, S.K., Van Tassell, C.P., Ahuja, L.R., Baxter, I.R., Cannon, S.B., Lunney, J.K., Rexroad Iii, C.E., Sadler, J., Stanton, T.B., Stephensen, C.B. 2013. Big data computing: Building a vision for ARS information management. USDA. Agricultural Research Service Publication (White Paper).
Soil sorptivity enhancement with crop residue accumulation in simiarid dryland no-till agroecosystems -
Shaver, T.M., Peterson, G.A., Ahuja, L.R. 2013. Soil sorptivity enhancement with crop residue accumulation in simiarid dryland no-till agroecosystems. Geoderma. 192:254-258. Available: http://www.sciencedirect.com/science/article/pii/S0016706112003096
Modeling The effect of elevated CO2 and climate change on reference evapotranspiration in the semi-arid Great Plains -
Simulating dryland water availability and spring wheat production under various management practices in the Northern Great Plains -
Qi, Z., Bartling, P.N., Jabro, J.D., Lenssen, A.W., Iversen, W.M., Ahuja, L.R., Ma, L., Allen, B.L., Evans, R.G. 2013. Simulating dryland water availability and spring wheat production under various management practices in the Northern Great Plains. Agronomy Journal. 105:37-50.
Simulation of soil-root growth interactions and associated processes: Synthesis and summary -
Timlin, D.J., Ahuja, L.R. 2013. Simulation of soil-root growth interactions and associated processes: Synthesis and summary. In: Timlin, D.J., Ahuja, L.R., Editors. Advances in Agricultural Systems Modeling Transdisciplinary Research, Synthesis, and Applications 4. Madison, WI: ASA-CSSA-SSSA Series. p. 295-302.
Simulated yield and profitability of five potential crops for intensifying the dryland wheat-fallow production system -
Anapalli, S., Nielsen, D.C., Ahuja, L.R., Ma, L., Lyon, D.J. 2012. Simulated yield and profitability of five potential crops for intensifying the dryland wheat-fallow production system. Agricultural Water Management. 116(2013):175-192.
ArgoEcoSystem-watershed (AgES-W) model evaluation for streamflow and nitrogen/sediment dynamics on a midwest agricultural watershed -
Ascough II, J.C., David, O., Smith, D.R., Kipka, H., Fink, M., Green, T.R., Krause, P., Mcmaster, G.S., Kralisch, S., Ahuja, L.R. 2012. ArgoEcoSystem-watershed (AgES-W) model evaluation for streamflow and nitrogen/sediment dynamics on a midwest agricultural watershed. In: Seppelt, R., Voinov, A.A., Lange, S., and Bankamp, D. editors,Proceedings of the Sixth Biennial Meetinf or the International Environmental Modeling and Software Society, Managing Resources of a Limited Planet: Pathways and Visions Under Uncertainty, July 1-5, 2012, Leipzig, Germany. p. 2179-2186.
Simulation of over-winter soil water and soil temperature with SHAW and RZ-SHAW -
Li, Z., Ma, L., Flerchinger, G.N., Ahuja, L.R., Wang, H. 2012. Simulation of over-winter soil water and soil temperature with SHAW and RZ-SHAW. Soil Science Society of America Journal. 76:1548-1563.
Opportunities for increasing utility of models for rangeland management -
Derner, J.D., Augustine, D.J., Ascough II, J.C., Ahuja, L.R. 2012. Opportunities for increasing utility of models for rangeland management. Rangeland Ecology and Management. 65(6):623-631.
A software engineering perspective on environmental modeling framework design: The object modeling system -
David, O., Ascough II, J.C., Lloyd, W., Green, T.R., Rojas, K.W., Leavesley, G.H., Ahuja, L.R. 2012. A software engineering perspective on environmental modeling framework design: The object modeling system. Journal of Environmental Modeling and Software. 39 (2013):201-213.
Sustainable dryland agroecosystems management -
Hansen, N.C., Sherrod, L.A., Peterson, G.A., Westfall, D.G., Peairs, F.B., Poss, D.J., Shaver, T.M., Larson, K.J., Thompson, D.L., Ahuja, L.R. 2012. Sustainable dryland agroecosystems management. Experiment Station Bulletins. TB 13-02.
Root Zone Water Quality Model (RZWQM2): Model use, calibration, and validation -
Ma, L., Ahuja, L.R., Nolan, B., Malone, R.W., Trout, T.J., Qi, Z. 2012. Root Zone Water Quality Model (RZWQM2): Model use, calibration, and validation. Transactions of the ASABE. 55(4):1425-1446.
Simulating the production potential of dryland spring canola in the Central Great Plains -
Nielsen, D.C., Saseendran, S.A., Ma, L., Ahuja, L.R. 2012. Simulating the production potential of dryland spring canola in the Central Great Plains. Agronomy Journal. 104:1182-1188.
Assessment of agricultural return flows under changing climate and crop water management -
Green, T.R., Ma, L., Anapalli, S., Ahuja, L.R., Trout, T.J. 2012. Assessment of agricultural return flows under changing climate and crop water management. Proceedings Solutions International Association of Hydrogeologists. Niagara Falls, Ontario, Canada, September 16-21.
Modeling the impacts of climate change on irrigated corn production in the central Great Plains -
Islam, A., Ahuja, L.R., Garcia, L.A., Ma, L., Anapalli, S.A., Trout, T.J. 2012. Modeling the impacts of climate change on irrigated corn production in the central Great Plains. Agricultural Water Management. 110:94-108.
Sustainable dryland agroecosystems management -
Hansen, N.C., Sherrod, L.A., Peterson, G.A., Westfall, D.G., Peairs, F.B., Poss, D.J., Shaver, T., Larson, K., Thompson, D., Ahuja, L.R. 2012. Sustainable Dryland Agroecosystems Management. Experiment Station Bulletins. TB 12-02.
Development and evaluation of the carbon-nitrogen cycle module for the GPFARM-Range model -
Qi, Z., Bartling, P.N., Ahuja, L.R., Derner, J.D., Dunn, G.H., Ma, L. 2012. Development and evaluation of the carbon-nitrogen cycle module for the GPFARM-Range model. Computers and Electronics in Agriculture. 83:1-10.
Development and application of a modular watershed-scale hydrologic model using the object modeling system: runoff response evaluation -
Ascough II, J.C., David, O., Krause, P., Heathman, G.C., Kralisch, S., Larose, M., Ahuja, L.R., Kipka, H. 2012. Development and application of a modular watershed-scale hydrologic model using the object modeling system: runoff response evaluation. Transactions of the ASABE. 55(1):117-135.
Sustainable dryland agroecosystems management -
Westfall, D.G., Sherrod, L.A., Peairs, F.B., Poss, D., Hansen, N.C., Peterson, G.L., Shaver, T.M., Larson, K., Thompson, D.L., Ahuja, L.R., Koch, M.D., Walker, C.B. 2012. Sustainable dryland agroecosystems management. Experiment Station Bulletins. TB 12-01.
Simulating the surface energy balance in a soybean canopy with SHAW and RZ-SHAW models -
Ma, L., Flerchinger, G.N., Ahuja, L.R., Sauer, T.J., Prueger, J.H., Malone, R.W., Hatfield, J.L. 2012. Simulating the surface energy balance in a soybean canopy with SHAW and RZ-SHAW models. Transactions of the ASABE. 55(1):175-179.
A synthesis of current parameterization approaches and needs for further improvements -
Ahuja, L.R., Ma, L. 2011. A synthesis of current parameterization approaches and needs for further improvements. In: Ahuja, L.R., Ma, L., editors. Methods of Introducing System Models into Agricultural Research. Madison, WI: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America. p.427-440.
A protocol for parameterization and calibration of RZWQM2 in field research -
Ma, L., Ahuja, L.R., Saseendran, S.A., Malone, R.W., Green, T.R., Nolan, B.T., Bartling, P.N., Flerchinger, G.N., Boote, K.J., Hoogenboom, G. 2011. A protocol for parameterization and calibration of RZWQM2 in field research. Soil Science Society of America Special Publication Book Chapter. p.1-64.
Parameterization of the GPFARM-Range model for simulating rangeland productivity -
Adiku, S.K., Ahuja, L.R., Dunn, G.H., Derner, J.D., Andales, A.A., Garcia, L., Bartling, P.N. 2011. Parameterization of the GPFARM-Range model for simulating rangeland productivity. In Ahuja, L.R., Ma, L. editors. Methods of Introducing System Models into Agricultural Research. Madison, WI: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America. p.209-222.
Modeling the effects of controlled drainage, N rate and weather on nitrate loss to subsurface drainage -
Fang, Q.X., Malone, R.W., Ma, L., Jaynes, D.B., Thorp, K.R., Green, T.R., Ahuja, L.R. 2012. Modeling the effects of controlled drainage, N rate and weather on nitrate loss to subsurface drainage. Agricultural Water Management. 103:150-161.
Calibrating RZWQM2 model for maize responses to deficit irrigation -
Ma, L., Trout, T.J., Ahuja, L.R., Bausch, W.C., Saseendran, S.A., Malone, R.W., Nielsen, D.C. 2011. Calibrating RZWQM2 model for maize responses to deficit irrigation. Agricultural Water Management. 103 (2012):140-149.
Extending results from agricultural fields with intensively monitored data to surrounding areas for water quality management -
Heilman, P., Malone, R.W., Ma, L., Hatfield, J.L., Ahuja, L.R., Boyle, K., Kanwar, R. 2012. Extending results from agricultural fields with intensively monitored data to surrounding areas for water quality management. Agricultural Systems. 106:59-71.
Simulating nitrate-nitrogen concentration from a subsurface drainage system in response to nitrogen application rates using RZWQM2 -
Qi, Z., Ma, L., Helmers, M.J., Ahuja, L.R., Malone, R.W. 2012. Simulating nitrate-nitrogen concentration from a subsurface drainage system in response to nitrogen application rates using RZWQM2. Journal of Environmental Quality. 41(1):289-295.
A rapid and cost effective method for soil carbon mineralization under static incubations Reprint Icon -
Sherrod, L.A., Hunter, W.J., Reeder, J., Ahuja, L.R. 2012. A rapid and cost effective method for soil carbon mineralization under static incubations. Communications in Soil Science and Plant Analysis. 43:6. 958-972. http://dx.doi.org/10.1080/00103624.2012.653031.
Spatial analyses of soil properties, terrain, and water dynamics in a semi-arid agricultural landscape -
Green, T.R., Erskine, R.H., Murphy, M.R., Ahuja, L.R. 2011. Spatial analyses of soil properties, terrain, and water dynamics in a semi-arid agricultural landscape. American Society of Agronomy Abstracts. Paper No. 63950.
Climate change impacts on dryland cropping systems in the central Great Plains, USA -
Ko, J., Ahuja, L.R., Anapalli, S., Green, T.R., Ma, L., Nielsen, D.C., Walthall, C.L. 2011. Climate change impacts on dryland cropping systems in the central Great Plains, USA. Climatic Change. 111:445-472.
Kirkham’s legacy and contemporary challenges in soil physics research -
Jury, W., Or, D., Pachepsky, Y.A., Vereecken, H., Hopmans, J., Ahuja, L.R., Clothier, B., Bristo, K., Kluitenberg, G., Moldrup, P., Simunek, J., Van Genuchten, M., Horton, R. 2011. Kirkham’s legacy and contemporary challenges in soil physics research. Soil Science Society of America Journal. 75:1589-1601.
Environmental modeling framework invasiveness: analysis and implications -
Lloyd, W., David, O., Ascough II, J.C., Rojas, K.W., Carlson, J., Leavesley, G.H., Krause, P., Green, T.R., Ahuja, L.R. 2011. Environmental modeling framework invasiveness: analysis and implications. Environmental Modeling & Software. 26(10):1240-1250.
Measurement of surface energy balance components in dryland wheat/fallow and limited-irrigation corn -
Green, T.R., Saseendran, S.A., Erskine, R.H., Ahuja, L.R., Murphy, M.R., Ma, L., Bausch, W.C., Andales, A.A. 2011. Measurement of surface energy balance components in dryland wheat/fallow and limited-irrigation corn. Annual American Geophysical Union Hydrology Days. Paper No. 11.
Drought and cropping intensity impact on soil organic carbon and total N across a cantena sequence -
Sherrod, L.A., Ahuja, L.R., Hansen, N., Peterson, G.A., Westfall, D. 2010. Drought and cropping intensity impact on soil organic carbon and total N across a cantena sequence. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 61344.
Adapting CROPGRO for Simulating Spring Canola Growth with Both RZWQM2 and DSSAT 4.0 -
Saseendran, S.A., Nielsen, D.C., Ma, L., Ahuja, L.R. 2010. Adapting CROPGRO for Simulating Spring Canola Growth with Both RZWQM2 and DSSAT 4.0. Agronomy Journal 102:1606-1621. Doi:10.2134/agronj2010.0277.
Simulating Alternative Dryland Rotational Cropping Systems in the Central Great Plains with RZWQM2 -
Saseendran, S.A., D.C. Nielsen, Liwang Ma, L.R. Ahuja, M.F. Vigil, 2010. Simulating Alternative Dryland Rotational Cropping Systems in the Central Great Plains with RZWQM2. Agronomy Journal. 102:1521-1534. doi:10.2134/agronj2010.0141.
Simulating landscape catena effects in no-till dryland agroecosystems using GPFARM -
Ascough II, J.C., Andales, A.A., Sherrod, L.A., Mcmaster, G.S., Hansen, N.C., DeJonge, K.C., Fathelrahman, E.M., Ahuja, L.R., Peterson, G.A., Hoag, D.L. 2010. Simulating landscape catena effects in no-till dryland agroecosystems using GPFARM. Agricultural Systems. 103(8): 569-584.
Simulation of free air CO2 enriched wheat growth and interaction with water, nitrogen, and temperature -
Ko, J., Ahuja, L.R., Kimball, B.A., Anapalli, S., Ma, L., Green, T.R., Ruane, A., Wall, G.W., Pinter Jr, P.J., Bader, D. 2010. Simulation of free air CO2 enriched wheat growth and interaction with water, nitrogen, and temperature. Agricultural and Forest Meteorology. 150:1331-1346.
Effective soil hydraulic properties in space and time: some field data analysis and modeling concepts -
Green, T.R., Ahuja, L.R., Ma, L., Ascough II, J.C., Dunn, G.H. Effective Soil Hydraulic Properties in Space and Time: Some Field Data Analysis and Modeling Concepts. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. Paper No. 61385.
Optimizing Soil Hydraulic Parameters in RZWQM2 Under Fallow Conditions -
Fang, Q.X., Green, T.R., Ma, L., Malone, R.W., Erskine, R.H., Ahuja, L.R. 2010. Optimizing Soil Hydraulic Parameters in RZWQM2 Under Fallow Conditions. Soil Science Society of America Journal. 74(6):1897-1913. DOI:10.2136/sssaj2009.0380.
A conservation ontology and knowledge base to support delivery of technical assistance to agricultural producers in the united states -
Carlson, J.R., Butler, D.B., David, O., Rojas, K.W., Ascough II, J.C., Leavesley, G.H., Oaks, W.R., Price, L.C., Ahuja, L.R. 2010. A conservation ontology and knowledge base to support delivery of technical assistance to agricultural producers in the united states. In: Swayne, D.A., Yang, W., Voinov, A.A., Rizzoli, A., and Filatova, T., editors. Environmental Modeling International Conference Proceedings. International Modeling and Environmental Software Society, Modeling for Environment's Sake, July 5-8, 2010, Ottawa, Canada. p. 1861-1869.
Rethinking modeling framework design: object modeling system 3.0 -
David, O., Ascough II, J.C., Leavesley, G.H., Ahuja, L.R. 2010. Rethinking modeling framework design: object modeling system 3.0. In: Swayne, D.A., Yang, W.,Voinov, A.A., Rizzoli, A., and Filatova, T., editors. Environmental Modeling International Conference Proceedings. International Modeling and Environmental Software Society, Modeling for Environment's Sake, July 5-8, 2010, Ottawa, Canada. p. 1183-1191.
Environmental modeling framework invasiveness: analysis and implications -
Lloyd, W., David, O., Ascough II, J.C., Rojas, K.W., Carlson, J.R., Leavesley, G.H., Krause, P., Green, T.R., Ahuja, L.R. 2010. Environmental modeling framework invasiveness: analysis and implications. In: Swayne, D.A., Yang, W.,Voinov, A.A., Rizzoli, A., and Fillatova, T. editors. Environmental Modeling International Conference Proceedings. International Modeling and Software Society, Modelling for Environment's Sake, July 5-8, 2010, Ottawa, Canada, p. 1073-1080.
Estimating effective soil properties of heterogeneous areas for modeling infiltration and redistribution -
Ahuja, L.R., Ma, L., Green, T.R. 2010. Estimating effective soil properties of heterogeneous areas for modeling infiltration and redistribution. Soil Science Society of America Journal. 74(5):1469-1482.
Simulation of sandsage-bluestem forage growth under varying stocking rates -
Adiku, S.K., Dunn, G.H., Ahuja, L.R., Gunter, S.A., Bradford, J.A., Garcia, L., Andales, A.A. 2010. Simulation of sandsage-bluestem forage growth under varying stocking rates. Rangeland Ecology and Management. 63(5):546-552.
No-till cropping system effects on soil profile organic carbon and total N after seven years of drought -
Sherrod, L.A., Ahuja, L.R., Hansen, N.R. 2010. No-till cropping system effects on soil profile organic carbon and total N after seven years of drought. Proceedings of Great Plains Soil Fertility Conference. p. 156-162.
Water Resources and Agricultural Water Use in the North China Plain: Current Status and Management Options -
Fang, Q., Ma, L., Green, T.R., Yu, Q., Wang, T.D., Ahuja, L.R. 2010. Water Resources and Agricultural Water Use in the North China Plain: Current Status and Management Options. Agricultural Water Management. 97(8):1102-1116. Available: doi:10.1016/j.agwat.2010.01.008.
Object-Oriented Agricultural System Modeling: Component-Driven Nutrient Dynamics and Crop Yield Simulations -
Ascough II, J.C., David, O., Krause, P., Ahuja, L.R. 2009. Object-Oriented Agricultural System Modeling: Component-Driven Nutrient Dynamics and Crop Yield Simulations. ASA-CSSA-SSSA Annual Meeting Abstracts.
RZWQM2 Simulations of Alternative Cropping Systems With and Without Summer Crops in the Central Great Plains -
Anapalli, S.S., Nielsen, D.C., Ma, L., Ahuja, L.R. 2009. RZWQM2 Simulations of Alternative Cropping Systems With and Without Summer Crops in the Central Great Plains. Agronomy Abstracts. Presented at the ASA/CSSA/SSSA annual meeting. Nov. 1-5, 2009. Pittsburg, PA.
Impact of Precipitation Timing and Soil Water at Planting on Wheat and Corn Yields in the Central Great Plains -
Sherrod, L.A., Ahuja, L.R., Hansen, N.C., Westphall, D.G., Peterson, G.A. 2009. Impact of Precipitation Timing and Soil Water at Planting on Wheat and Corn Yields in the Central Great Plains. ASA-CSSA-SSSA Annual Meeting Abstracts.
A rapid and cost effective method for soil carbon mineralization under static incubations -
Sherrod, L.A., Reeder, J.D., Hunter, W.J., Ahuja, L.R. 2009. A rapid and cost effective method for soil carbon mineralization under static incubations. ASA-CSSA-SSSA Annual Meeting Abstracts.
A step by step procedure for parameterization, calibration, validation, and application of a system model in field research -
Ma, L., Ahuja, L.R., Malone, R.W., Green, T.R. A Step by Step Procedure for Parameterization, Calibration, Validation, and Application of a System Model in Field Research. ASA-CSSA-SSSA Annual Meeting Abstracts.
Using Computer Models to Explore Alternative Scenarios for Managing Limited Irrigation Water -
Ahuja, L.R. 2009. Using Computer Models to Explore Alternative Scenarios for Managing Limited Irrigation Water. Natural Resources Research Update (NRRU). Update #244313.
An Exploratory Investigation on the Invasiveness of Environmental Modeling Frameworks Reprint Icon -
Lloyd, W., David, O., Ascough II, J.C., Rojas, K.W., Carlson, J.R., Leavesley, G.H., Krause, P., Green, T.R., Ahuja, L.R. 2009. An Exploratory Investigation on the Invasiveness of Environmental Modeling Frameworks. World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation.p. 909-915.
Use of a Cropping System Model for Soil-Specific Optimization of Limited Water -
Ahuja, L.R., Anapalli, S.S., Ma, L., Nielsen, D.C., Trout, T.J., Andales, A.A., Hansen, N.C. 2009. Use of a Cropping System Model for Soil-Specific Optimization of Limited Water. International Conference on Precision Agriculture Abstracts & Proceedings.
Economic Risk Analysis of Experimental Cropping Systems Using the SMART Risk Tool Reprint Icon -
Ascough II, J.C., Fathelrahman, E.M., Vandenberg, B.C., Hoag, D., Ahuja, L.R. 2009. Economic Risk Analysis of Experimental Cropping Systems Using the SMART Risk Tool. Meeting Abstract. p.17-18.
Farming Systems Modeling Using the Object Modeling System (OMS): Overview, Applications, and Future Plans Reprint Icon -
Carlson, J.R., Ascough II, J.C., David, O., Green, T.R., Rojas, K.W., Ahuja, L.R., Geter, F.W. 2010. Farming Systems Modeling Using the Object Modeling System (OMS): Overview, Applications, and Future Plans. Meeting Abstract. p. 49-50.
A Component-Based Distributed Watershed Model for the USDA CEAP Watershed Assessment Study Reprint Icon -
Ascough II, J.C., David, O., Krause, P., Green, T.R., Heathman, G.C., Kralisch, S., Ahuja, L.R. 2009. A Component-Based Distributed Watershed Model for the USDA CEAP Watershed Assessment Study. Meeting Abstract. p.19-20.
Space-Time Dynamics of Soil Water and Process Interactions in Semi-Arid Terrain, Colorado, USA Reprint Icon -
Green, T.R., Erskine, R.H., Murphy, M.R., Ma, L., Ascough II, J.C., Mcmaster, G.S., Dunn, G.H., Ahuja, L.R. 2009. Space-Time Dynamics of Soil Water and Process Interactions in Semi-Arid Terrain, Colorado, USA. International Congress on Modeling and Simulation Proceedings. p. 1851-1857.
Simulation of Climate Change Impacts on Wheat-Fallow Cropping Systems -
Ko, J., Ahuja, L.R., Kimball, B.A., Anapalli, S., Ma, L., Green, T.R., Wall, G.W., Pinter Jr, P.J. 2009. Simulation of Climate Change Impacts on Wheat-Fallow Cropping Systems. ASA-CSSA-SSSA Annual Meeting Abstracts.
Modeling Responses of Dryland Spring Triticale, Proso Millet and Foxtail Millet to Initial Soil Water in the High Plains -
Anapalli, S.S., Nielsen, D.C., Lyon, D.J., Ma, L., Felter, D.G., Baltensperger, D.D., Hoogenboom, G., Ahuja, L.R. 2009. Modeling Responses of Dryland Spring Triticale, Proso Millet and Foxtail Millet to Initial Soil Water in the High Plains. Field Crops Research 113:48-63.
Irrigation Strategies To Improve Water Use Efficiency in the Wheat-Maize Double Cropping System in China -
Fang, Q., Ma, L., Yu, Q., Ahuja, L.R., Malone, R.W., Hoogenboom, G. 2009. Irrigation Strategies To Improve Water Use Efficiency in the Wheat-Maize Double Cropping System in China. Agricultural Water Management. 97 (8):1165-1174.
Response of Crops to Limited Water: Understanding and Modeling Water Stress Effects on Plant Growth Processes -
Ahuja, L.R., Reddy, V., Saseendran, S.A., Yu, Q. 2009. Responses of Crops to Limited Water: Understanding and Modeling Water Stress Effects on Plant Growth Processes. Complete Book. Madison, Wisconsin. American Society of Agronomy, Inc., Crop Soil Science Society of America, Inc., Soil Science Society of America, Inc. 436 p.
Synthesis of Papers and Actions and Further Research to Improve Response of Crop System Models to Water Stress -
Ahuja, L.R., Reddy, V., Saseendran, S.A., Yu, Q. 2009. Synthesis of Papers and Actions and Further Research to Improve Response of Crop System Models to Water Stress in Ahuja, R., Reddy, V., Saseendran, S.A., Yu, Q, editors. Response of Crops to Limited Water: Understanding and Modeling Water Stress Effects on Plant Growth Processes. Madison, Wisconsin: American Society of Agronomy, Inc, Crop Soil Science Society of America, Inc., Soil Science Society of America, Inc. p 411-421.
Effects of Estimating Soil Hydraulic Properties and Root Growth Factor on Soil Water Balance and Crop Production -
Ma, L., Hoogenboom, G., Saseendran, S.A., Bartling, P.N., Ahuja, L.R., Green, T.R. 2009. Effects of Estimating Soil Hydraulic Properties and Root Growth Factor on Soil Water Balance and Crop Production. Agronomy Journal. 101(3) :572-583.
Fractal Analyses of Steady Infiltration and Terrain on an Undulating Agricultural Field -
Green, T.R., Dunn, G.H., Erskine, R.H., Salas, J.D., Ahuja, L.R. 2009. Fractal Analyses of Steady Infiltration and Terrain on an Undulating Agricultural Field. Vadose Zone Journal. 8(2)310-320.
Evaluating the Crop Water Stress Index and its Correlation with Latent Heat and CO2 Fluxes Over Winter Wheat and Maize in the North China Plain -
Li, L., Nielsen, D.C., Yu, Q., Ma, L., Ahuja, L.R. 2008. Evaluating the Crop Water Stress Index and its Correlation with Latent Heat and CO2 Fluxes Over Winter Wheat and Maize in the North China Plain. Agricultural Water Management. 97:1146-1155. doi:10.1016/j.agwat.2008.09.015.
Winter Cover Crop Effects on Nitrate Leaching in Subsurface Drainage as Simulated by RZWQM-DSSAT -
Li, L., Malone, R.W., Ma, L., Kaspar, T.C., Jaynes, D.B., Saseendran, S.A., Thorp, K.R., Yu, Q., Ahuja, L.R. 2008. Winter Cover Crop Effects on Nitrate Leaching in Subsurface Drainage as Simulated by RZWQM-DSSAT. Transactions of the ASABE. 51:1575-1583.
Current Water Deficit Stress Simulations in Selected Agricultural System Simulation Models -
Anapalli, S.S., Ahuja, L.R., Ma, L., Timlin, D.J., Stockle, C.O., Boote, K.J., Hoogenboom, G. 2008. Current Water Deficit Stress Simulations in Selected Agricultural System Simulation Models. In: Ahuja, L.R., Reddy, V.R., Saseendran, S.A., Yu, Q., editors. Response of Crops to Limited Water: Understanding and Modeling Water Stress Effects on Plant Growth Processes. Madison, WI, American Society of Agronomy, Crop Science Society of America, Soil Science Society of America. p. 1-38.
Modeling Nitrogen and Water Management Effects in a Wheat-Maize Double-Cropping System Reprint Icon -
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. 37:2232-2242.
Simulated Corn Stover Removal Effects on Soil Organic Carbon and Nitrogen Dynamics -
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.
Simulated Effects of Nitrogen Management and Soil Microbes on Soil Nitrogen Balance and Crop Production -
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.
Modeling Crop Responses to Initial Soil Water in the High Plains -
Saseendran, S.A., Nielsen, D.C., Lyon, D.J., Ma, L., Ahuja, L.R. 2008. Modeling Crop Responses to Initial Soil Water in the High Plains. Agronomy Abstract. Presented at the International American Society of Agronomy meetings, Crop Science Society of America and Soil Science Society of America (ASA/CSSA/SSSA) annual meetings. oct. 5-9, 2008. Houston, TX.
Impacts of Cropping Intensity on Soil C and Net Greenhouse Gas Fluxes for Dryland Cropping in Northeastern Colorado -
Del Grosso, S.J., Sherrod, L.A., Mosier, A., Peterson, G.A., Ahuja, L.R., Hansen, N. 2008. Impacts of Cropping Intensity on Soil C and Net Greenhouse Gas Fluxes for Dryland Cropping in Northeastern Colorado. Proceedings Great Plains Soil Fertility Conference. Vol. 12, pp. 40-44.
Use of Crop Simulation Models to Evaluate Limited Irrigation Management Options for Corn in Semi-Arid Environment Reprint Icon -
Anapalli, S.S., Ahuja, L.R., Nielsen, D.C., Trout, T.J., Ma, L. 2008. Use of Crop Simulation Models to Evaluate Limited Irrigation Management Options for Corn in Semi-Arid Environment. Water Resources Research. Water Resources Research, 44,W00E02, doi10.1029/2007WR006181.
DEVELOPMENT AND TESTING OF A TERRAIN-BASED HYDROLOGIC MODEL FOR SPATIAL HORTONIAN INFILTRATION AND RUN-OFF/ON -
Meng, H., Green, T.R., Salas, J., Ahuja, L.R. 2008. Development and testing of a terrain-based hydrologic model for spatial hortonian infiltration and run-off/on . Environmental Modeling & Software. 23 (6): 794-812.
Ecological Models: Agricultural Models -
Ascough II, J.C., Ahuja, L.R., Mcmaster, G.S., Ma, L., Andales, A.A. 2008. Agricultural Models. In: Jorgensen, S.E., Faith, B.D.editors. Ecological Models. Vol. (1) Encyclopedia of Ecology., 5 vols. Oxford, Elsevier. p. 85-95.
Simulated Corn Yield Responses to Limited-Water Irrigation Under Varying Soil and Climate Conditions Reprint Icon -
Anapalli, S.S., Ahuja, L.R., Ma, L., Nielsen, D.C., Trout, T.J., Hansen, N., Andales, A.A. 2007. Simulated Corn Yield Responses to Limited-Water Irrigation Under Varying Soil and Climate Conditions. ASA-CSSA-SSSA Annual Meeting Abstracts, New Orleans, LA. November 5,2007, 33-2.
Spatial Variability and Scaling of Infiltration on Undulating Agricultural Terrain Reprint Icon -
Green, T.R., Ahuja, L.R., Dunn, G.H., Ascough Ii, J.C., Mcmaster, G.S., Ma, L., Erskine, R.H., Salas, J.D., Palic, D.B., Murphy, M.R. 2007. Spatial Variability and Scaling of Infiltration on Undulating Agricultural Terrain. American Society of Agronomy Meetings New Orleans, November 7,2007 (282-3).
Developing Erosion Prediction Modeling Technology Using the Object Modeling System (OMS): Viability and Challenges -
Ascough Ii, J.C., Flanagan, D.C., David, O., Ahuja, L.R., Rojas, K.W. 2007. Developing Erosion Prediction Modeling Technology Using the Object Modeling System (OMS): Viability and Challenges. American Society of Agronomy Meetings, New Orleans, LA. November 4-8, 2007.
Scaling Parameters of the Lewis-Kostiakov Water Infiltration Equation Across Soil Textural Classes and Extension to Rain Infiltration -
Ahuja, L.R., Kozak, J.A., Andales, A.A., Ma, L. 2006. Scaling Parameters of the Lewis-Kostiakov Water Infiltration Equation Across Soil Textural Classes and Extension to Rain Infiltration. Transactions of the ASABE. Vol.50(5): 1525-1541.2007.
System Modeling for Soil and Water Research and Management: Current Status and Needs for the 21st Century Reprint Icon -
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.
Energy balance simulation of a wheat canopy using the RZ-SHAW (RZWQM-SHAW) model -
Yu, Q., Flerchinger, G.N., Xu, S., Kozak, J.A., Ma, L., Ahuja, L.R. 2007. Energy balance simulation of a wheat canopy using the rz-shaw (rzwqm-shaw) model. Trans. of ASABE 50(5): 1507-1516.
Evaluating GPFARM for No-Tillage Dryland Experimental Sites in Eastern Colorado Reprint Icon -
Ascough Ii, J.C., Mcmaster, G.S., Andales, A.A., Hansen, N.C., Ahuja, L.R., Sherrod, L.A. 2007. Evaluating GPFARM for No-Tillage Dryland Experimental Sites in Eastern Colorado. Transactions of the ASABE, 50(5):1565-1578.
Integrating Soil and Crop Research with System Models in the Midwest USA: Purpose and Overview of the Special Issue Reprint Icon -
Ahuja, L.R., Hatfield, J.L. 2007. Integrating Soil and Crop Research with System Models in the Midwest USA: Purpose and Overview of the Special Issue. Geoderma. Vol.140;3. pp 217-222. July 15, 2007. doi:10.1016/j.geoderma.2007.04.006.
Using the RZWQM to Simulate the Fate of Nitrogen in Field Soil - Crop Environment in the Mediterranean Region -
Cameira, M.R., Fernando, R.M., Ahuja, L.R., Ma, L. 2007. Using the RZWQM to Simulate the Fate of Nitrogen in Field Soil - Crop Environment in the Mediterranean Region. Agricultural Water Management. 90:121-136. 2007.
Whole System Integration and Modeling Essential to Agricultural Science and Technology for the 21st Century Reprint Icon -
Ahuja, L.R., Andales, A.A., Ma, L., Saseendran, S.A. 2007. Whole System Integration and Modeling Essential to Agricultural Science and Technology for the 21st Century. Journal of Crop Improvement. 19 (1-2).
Comparision of modeling approaches to quantify residue architecture effects on soil temperature and water -
Kozak, J.A., Aiken, R.M., Flerchinger, G.N., Nielsen, D.C., Ma, L., and Ahuja, L.R. 2007, Comparison of modeling approaches to quantify residue architecture effects on soil temperature and water. International Journal of Soil and Tillage Research.95:84-96.
SIMULATING MANAGEMENT EFFECTS ON CROP PRODUCTION, TILE DRAINAGE, AND WATER QUALITY USING RZWQM-DSSAT -
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.
RZWQM Simulation Of Long-Term Crop Production, Water And Nitrogen Balances In Northeast Iowa -
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.
Evaluation of Crop Water Stress Based On Soil Moisture, Evapotranspiration, and Canopy Temperature -
Yu, Q., Xu, S., Ma, L., Ahuja, L.R. 2006. Evaluation of Crop Water Stress Based On Soil Moisture, Evapotranspiration, and Canopy Temperature. ASA-CSSA-SSSA Annual Meeting Abstracts. Indianapolis, IN. November 13, 2006.
Simulations of Limited-Water Irrigation Management Options for Corn in Dryland Agriculture -
Saseendran, A., Ahuja, L.R., Ma, L., Nielsen, D.C., Dunn, G.H. 2006. Simulations of Limited-Water Irrigation Management Options for Corn in Dryland Agriculture. ASA-CSSA-SSSA Annual Meeting Abstracts. Indianapolis, IN. November 13, 2006.
GPFARM Evaluation Across a No-Till Dryland Agroecosystem Landscape Catena -
Ascough Ii, J.C., Andales, A.A., Mcmaster, G.S., Ahuja, L.R. 2006. Gpfarm evaluation across a no-till dryland agroecosystem landscape catena. ASA-CSSA-SSSA Annual Meeting Abstracts. Indianapolis, IN. 11/15/2006.
Scaling up preferential flow in unsaturated undulating terrain due to anisotropic soil hydraulic conductivity and other potential mechanisms -
Green, T.R., Freyberg, D., Constanz, J., Ahuja, L.R. 2006. Scaling up preferential flow in unsaturated undulating terrain due to anisotropic soil hydraulic conductivity and other potential mechanisms. International Conference on Preferential Flow and Transport Processes in Soil. Zurich, Switzerland. November 7,2006.
APPLICATIONS OF AGRICULTURAL SYSTEM MODELS IN ASSESSING AND MANAGING CONTAMINATION OF THE SOIL-WATER-ATMOSPHERE CONTINUUM IN AGRICULTURE -
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.
SOIL ORGANIC CARBON POOL CHANGES UNDER LONG-TERM NO-TILL AND CROPPING INTENSITY REGIMES ACROSS AN EVAPOTRANSPIRATION GRADIENT IN EASTERN COLORADO, USA -
Ma, L., Sherrod, L.A., Peterson, G., Hansen, N., Ahuja, L.R. 2006. Soil organic carbon pool changes under long-term no-till and cropping intensity regimes across an evapotranspiration gradient in Eastern Colorado, USA. International Soil Tillage Research Organization Proceedings. KIel, Germany. 8/28 - 9/3/2006. (Abstract)
TEMPORALLY STABLE PATTERNS IN GRAIN YIELD AND SOIL WATER ON A DRYLAND CATENA -
Andales, A.A., Green, T.R., Ahuja, L.R., Erskine, R.H., Peterson, G.A. 2007. Temporally stable patterns in grain yield and soil water on a dryland catena. Agricultural Systems 94 (2007) 119-127).
MODELING EFFECTS OF TILL/NO-TILL AND SURFACE CROP RESIDUES ON SOIL WATER, TEMPERATURE AND ENERGY BALANCE -
Ahuja, L.R., Anapalli, S.S., Ma, L., Kozak, J.A., Aiken, R.M., Flerchinger, G.N. 2006. Modeling effects of till/no-till and surface crop residues on soil water, temperature and energy balance. International Soil Tillage Research Organization. Kiel, Germany, August 28-September 3, 2006.
SENSITIVITY OF TILE DRAINAGE FLOW AND CROP YIELD ON MEASURED AND CALIBRATED SOIL HYDRAULIC PROPERTIES -
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. -
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.
Strategic and Tactical Prediction of Forage Production in Northern Mixed-Grass Prairie -
Andales, A.A., Derner, J.D., Ahuja, L.R., Hart, R.H. 2006. Strategic and Tactical Prediction of Forage Production in Northern Mixed-Grass Prairie. Rangeland Ecology and Management. 59 (6): 576-584. doi: 10.2111/06-001R1.1.
DECISION SUPPORT FOR NITROGEN MANAGEMENT IN TILE-DRAINED AGRICULTURE 1825 -
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 -
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).
USING A RANGE-LIVESTOCK MODEL TO ESTIMATE MAXIMUM COW-CALF STOCKING RATES ON A MIXED-GRASS PRAIRIE -
Andales, A.A., Ahuja, L.R. 2006. Using a range-livestock model to estimate maximum cow-calf stocking rates on a mixed-grass prairie. ASABE Annual International Meeting. Portland, OR. July 9-12, 2006.
MODELING SPATIAL-TEMPORAL SOIL WATER AND OVERLAND FLOW IN A DRYLAND WHEAT-FALLOW FIELD USING MARIA-GIS -
Green, T.R., Ascough II, J.C., Erskine, R.H., Vandenberg, B.C., Ahuja, L.R. 2006. Modeling spatial-temporal soil water and overland flow in a dryland wheat-fallow field using maria-gis. World Congress of Soil Science. Philadelphia, PA. 7/9-7/15/2006
Evaluating Various Water Stress Calculations in RZWQM and RZ-SHAW for Corn and Soybean Production -
Kozak, J.A., Ma, L., Ahuja, L.R., Flerchinger, G.N., Nielsen, D.C. 2006. Evaluating Various Water Stress Calculations in RZWQM and RZ-SHAW for Corn and Soybean Production. Agronomy Journal 98:1146-1155.
DECISION SUPPORT FOR NITROGEN MANAGEMENT IN TILE DRAINED AGRICULTURE 1811 -
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.
APPLICATIONS OF A FORAGE PRODUCTION MODEL IN SEMI-ARID NORTHERN MIXED-GRASS PRAIRIE -
Andales, A.A., Derner, J.D., Ahuja, L.R., Hart, R.H. 2006. Applications of a forage production model in semi-arid northern mixed-grass prairie. [Abstract]. 36th Biological Systems Simulation Group Conference, Fort Collins, CO; Apr. 11-13, 2006.
AN IMPROVED AGRICULTURAL SYSTEM MODEL FOR SPACE-TIME SIMULATION OF AGRICULTURAL LANDSCAPE VARIABILITY -
Ascough II, J.C., Ma, L., Green, T.R., Flerchinger, G.N., Mcmaster, G.S., Ahuja, L.R., Vandenberg, B.C. 2006. An improved agricultural system model for space-time simulation of agricultural landscape variability. World Congress of Soil Science. July 9-15,2006.
APPLICATIONS OF RZWQM IN AGRICULTURAL RESEARCH FOR SOIL AND WATER MANAGEMENT -
Ma, L., Ahuja, L.R., Saseendran, S.A. 2006. Applications of rzwqm in agricultural research for soil and water management. World Congress of Soil Science. Philadelphia, PA. 7/09/-7/14/2006.(Abstract).
KEY CRITERIA AND SELECTION OF SENSITIVITY ANALYSIS METHODS APPLIED TO NATURAL RESOURCE MODELS Reprint Icon -
Ascough Ii, J.C., Green, T.R., Ma, L., Ahuja, L.R. 2005. Key criteria and selection of sensitivity analysis methods applied to natural resource models. Modsim 2005 International Congress on Modeling and Simulation, Modeling and Simulation Society of Australia and New Zealand, Melbourne, Australia. December 12-15, 2005. p2463-2469.
KEY CRITERIA AND SELECTION OF SENSITIVITY ANALYSIS METHODS APPLIED TO NATURAL RESOURCE MODELS -
Ascough Ii, J.C., Green, T.R., Ma, L., Ahuja, L.R. 2005. Key criteria and selection of sensitivity analysis methods applied to natural resource models. International Congress on Modeling and Simulation Proceedings. Salt Lake City, UT, November 6-11,2005.
PRODUCERS, DECISION SUPPORT SYSTEMS, AND GPFARM: LESSONS LEARNED FROM A DECADE OF DEVELOPMENT -
Ascough Ii, J.C., Dunn, G.H., Mcmaster, G.S., Ahuja, L.R., Andales, A.A. 2005. Producers, decision support systems, and gpfarm: lessons learned from a decade of development. International Congress on Modeling and Simulation Proceedings.
MODELING PRECISION AGRICULTURE FOR BETTER CROP PRODUCTIVITY AND ENVIRONMENTAL QUALITY -
Bakhsh, A., Kanwar, R., Jaynes, D.B., Colvin, T.S., Ahuja, L.R. 2005. Modeling precision agriculture for better crop productivity and environmental quality. Asian Association for Agricultural Engineering. 14(4):235-243.
Crop Canopy and Residue Rainfall Interception Effects on Water and Crop Growth -
Modelling Crop Canopy and Residue Rainfall Interception Effects on Soil Hydrological Components for Semi-Arid Agriculture -
Kozak, J.A., Ahuja, L.R., Green, T.R., Ma, L. 2007. Modelling Crop Canopy and Residue Rainfall Interception Effects on Soil Hydrological Components for Semi-Arid Agriculture. Hydrological Processes. 21:229-241. Can be accessed at doi: 10.1002/hyp.6235.
MODELING A WHEAT-MAIZE DOUBLE CROPPING SYSTEM IN CHINA USING TWO PLANT GROWTH MODULES WITH RZWQM -
Yu, Q., Saseendran, S.A., Ma, L., Flerchinger, G.N., Green, T.R., Ahuja, L.R. 2006. Modeling a wheat-maize double cropping system in china using two plant growth modules with rzwqm. Agricultural Systems. 89(2-3):457-477.2006.
SCALING INFILTRATION AND OTHER SOIL WATER PROCESSES ACROSS DIVERSE SOIL TEXTURAL CLASSES -
Kozak, J.A., Ahuja, L.R., Green, T.R. 2005. Scaling infiltration and other soil water processes across diverse soil textural classes. American Geophysical Union 2005 Annual Meeting. SanFrancisco, CA. Dec. 7, 2005.
A DEM-based Watershed Model with Spatial Hortonian Infiltration and Ruh-Off/On -
Meng, H., Green, T.R., Salas, J.D., Ahuja, L.R. 2005. A DEM-based watershed model with spatial hortonian infiltration and ruh-off/on. Trans American Geophysical Union, 86 (52), Fall Meeting Supplement, Abstract H13H-1400.
EVALUATING NITROGEN AND WATER MANAGEMENT OF A DOUBLE CROPPING SYSTEM IN CHINA -
Hu, C., Saseendran, S.A., Green, T.R., Ma, L., Li, X., Ahuja, L.R. 2006. Evaluating nitrogen and water management of a double cropping system in china. Vadose Zone Journal. 5:493-505.2006.
MODELING THE EFFECT OF RUSSIAN WHEAT APHID, DIURAPHIS NOXIA (MORDVILKO) AND WEEDS IN WINTER WHEAT AS GUIDE TO MANAGEMENT -
Chander, S., Ahuja, L.R., Peairs, F.B., Aggarwal, P.K., Kalra, N. 2006. Modeling the effect of russian wheat aphid, diuraphis noxia (mordvilko) and weeds in winter wheat as guide to management. Agricultural Systems. Agricultural Systems (Journal) June 2006. 88(2-3):494-513. 2006.
TRANS-DISCIPLIANRY SOIL PHYSICS RESEARCH CRITICAL TO SYNTHESIS AND MODELING OF AGRICULTURAL SYSTEMS -
Ahuja, L.R., Ma, L., Timlin, D.J. 2006. Trans-disciplianry soil physics research critical to synthesis and modeling of agricultural systems. Soil Science Society of America Journal.70:311-326.2006.
ENERGY BALANCE AND WATER AND HEAT TRANSFER SIMULATED BY SHAW AND RZ-SHAW -
Yu, Q., Kozak, J.A., Xu, S., Flerchinger, G.N., Ma, L., Ahuja, L.R. 2005. Energy balance and water and heat transfer simulated by shaw and rz-shaw. ASA-CSSA-SSSA Annual 2005 Meeting Abstracts. Salt Lake City, UT. Nov. 6-10, 2005.
SPATIAL WATER QUALITY MODELING FRAMEWORK DEVELOPMENT USING ARCGIS9 -
Ascough II, J.C., Green, T.R., Ahuja, L.R., Ma, L., Vandenberg, B.C. 2005. Spatial water quality modeling framework development using ArcGIS9. Proceedings 05-2082. 2005 ASAE Annual International Meeting, Tampa, FL. July 17-20. http://asae/frymulti.com/techpapers.asp?confid=tfl2005.
DEVELOPMENT OF A FORAGE GROWTH COMPONENT IN THE OBJECT MODELING SYSTEM -
Andales, A.A., David, O., Ahuja, L.R. 2005. Development of a forage growth component in the object modeling system. American Society of Agricultural Engineers Meetings Papers. 2005 ASAE Annual International Meeting, Tampa, FL, July 17-20, 2005. Paper #053011.2005. Extended Abstract.
SCALING OF KOSTIAKOV INFILTRATION EQUATION PARAMETERS ACROSS SOIL TEXTURAL CLASSES -
Kozak, J.A., Ahuja, L.R. 2005. Scaling of kostiakov infiltration equation parameters across soil textural classes. Soil Science Society of America Annual Meeting.
MODELING IMPACTS OF CROP ROTATIONS, TILLAGE AND N MANAGEMENT ON CROP PRODUCTIVITY AND WATER QUALITY USING THE RZWQM-DSSAT HYBRID MODEL -
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.
A NEW SOIL C/N MODULE TO SIMULATE DENITRIFICATION FOR GROUNDWATER REMEDIATION -
Ma, L., Hunter, W.J., Ahuja, L.R. 2005. A new soil C/N module to simulate denitrification for groundwater remediation. ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 6-10, 2005. Salt Lake City, UT.
DEVELOPMENT AND EVALUATION OF THE RZWQM-CROPGRO HYBRID MODEL FOR SOYBEAN PRODUCTION -
Ma, L., Hoogenboom, G., Ahuja, L.R., Nielsen, D.C., Ascough II, J.C. 2005.Development and evaluation of the RZWQM-CROPGRO hybrid model for soybean production. Agronomy Journal. 97:1172-1182.
SIMULATING THE FATE OF WATER IN FIELD SOIL-CROP ENVIRONMENT FOR EVALUATING MANAGEMENT EFFECTS ON WATER QUALITY AND CROP PRODUCTION -
Cameira, M.R., Fernando, R.M., Ahuja, L.R., Pereira, L. 2005. Simulating the fate of water in field soil-crop environment for evaluating management effects on water quality and crop production. Journal of Hydrology. 315: 1-24. December, 2005.
EFFECTIVENESS OF RZWQM FOR SIMULATING ALTERNATIVE GREAT PLAINS CROPPING SYSTEMS -
Saseendran, S.A., Nielsen, D.C., Ma, L., Ahuja, L.R., Vigil, M.F., Benjamin, J.G., Halvorson, A.D. 2005. Effectiveness of RZWQM for simulating alternative Great Plains cropping systems. Agronomy Journal 97:1183-1193.
EFFECTIVENESS OF RZWQM FOR SIMULATING ALTERNATIVE GREAT PLAINS CROPPING SYSTEMS -
Anapalli, S.A., Nielsen, D.C., Ma, L., Ahuja, L.R., Vigil, M.F., Benjamin, J.G., Halvorson, A.D. 2005. Effectiveness of RZWQM for simulating alternative great plains cropping systems. Proceedings from the 35th Biological Systems Simulation Conference. April 19-21, 2005. Phoenix, AZ. P. 37-38.
NITRATE LOSSES IN SUBSURFACE TILE DRAINAGE AS AFFECTED BY TILLAGE, CROP ROTATIONS, AND FERTILIZER MANAGEMENT -
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.
DEVELOPMENT AND EVALUATION OF THE RZWQM-CERES-MAIZE HYBRID MODEL FOR MAIZE PRODUCTION -
Ma, L., Hoogenboom, G., Ahuja, L.R., Ascough Ii, J.C., Saseendran, S.A. 2006. Evaluation of the rzwqm-ceres-maize hybrid model for maize production. Agricultural Systems. 87(3): 274-295.
SCALING AND ESTIMATION OF EVAPORATION AND TRANSPIRATION OF WATER ACROSS SOIL TEXTURES -
Kozak, J.A., Ahuja, L.R., Ma, L., Green, T.R. 2005. Scaling and estimation of evaporation and transpiration of water across soil textures. Vadose Zone Journal. 4:418-427. 2005.
DEVELOPING NATURAL RESOURCE MODELS USING THE OBJECT MODELING SYSTEM: FEASIBILITY AND CHALLENGES -
Ahuja, L.R., Ascough Ii, J.C., David, O. 2005. Developing natural resource models using the object modeling system: feasibility and challenges. Advances in Geosciences. 3:1-8, 2005.
EVALUATION OF GPFARM FOR SIMULATION OF FORAGE PRODUCTION AND COW-CALF WEIGHTS. -
Andales, A.A., Derner, J.D., Bartling, P.N., Ahuja, L.R., Dunn, G.H., Hart, R.H., Hanson, J.D. 2005. Evaluation of GPFARM for simulation of forage production and cow-calf weights. Rangeland Ecology and Management.58:247-255.
SUSTAINABLE DRYLAND AGROECOSYSTEM MANAGEMENT -
Westfall, D.G., Peterson, G.A., Peairs, F.B., Sherrod, L.A., Poss, D.J., Shaver, T., Larson, K., Thompson, D.L., Ahuja, L.R., Koch, M.D., Walker, C.B. 2004. Sustainable dryland agroecosystem management. Experiment Station Technical Bulletin TB04-05 Nov. 2004.
MODELING SPATIAL VARIABILITY IN AGRICULTURE: THE AGSIMSGIS WATER QUALITY TOOL -
Ascough Ii, J.C., Green, T.R., Ahuja, L.R., Vandenberg, B.C., Ma, L. 2004. Modeling spatial variability in agriculture: the agsimsgis water quality tool. Meeting Abstract. ESRI Southwest Users Group 2004 conference, Telleride, CO, October 20-22, 2004. www.swuggis.org/swug_2004/abstracts.shtml.
SIMULATING PLANTING DATE EFFECTS ON CORN PRODUCTION USING RZWQM AND CERES-MAIZE -
Saseendran, S.A., Ma, L., Nielsen, D.C., Vigil, M.F., Ahuja, L.R. 2005. Simulating planting date effects on corn production using RZWQM and CERES-Maize Models. Agronomy Journal. 97:58-71 (2005).
MODEL PARAMETERS FOR AGRICULTURAL SYSTEMS WITH NONLINEAR PROCESS INTERATIONS AND SPATIAL VARIABILITY -
Green, T.R., Ahuja, L.R., Ascough II, J.C., Ma, L., Erskine, R.H., McMaster, G.S. 2004. Model parameters for agricultural systems with nonlinear process interations and spatial variability. Agronomy Abstracts a04-5627. (CD-ROM). 2004.
SCALING OF INFILTRATION AND REDISTRIBUTION OF WATER ACROSS SOIL TEXTURAL CLASSES -
Ahuja, L.R., Kozak, J.A. 2004. Scaling of infiltration and redistribution of water across soil textural classes. ASA-CSSA-SSSA Annual Meeting Abstracts. Seattle, WA. 10/31-11/4,2004.
ROLE OF MACROPORES IN PESTICIDE TRANSPORT TO GROUNDWATER -
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 -
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.
MODELING THE FATE OF ACETOCHLOR AND TERBUTHYLAZINE IN THE FIELD USING THE ROOT ZONE WATER QUALITY MODEL -
Ma, Q.L., Rahman, A., James, T.K., Holland, P.T., McNaughton, D.E., Rojas, K.W., Ahuja, L.R. 2004. Modeling the fate of acetochlor and terbuthylazine in the field using the Root Zone Water Quality Model. Soil Science Society of America Journal.68:1491-1500.
USING RZWQM TO SIMULATE WATER, NITROGEN, AND PLANTING DATE EFFECTS ON CORN, SOYBEAN, AND WINTER WHEAT PRODUCTION IN NORTHEAST COLORADO -
Nielsen, D.C., Ma, L., Anapalli, S., Ahuja, L.R. 2004. Using RZWQM to simulate water, nitrogen, and planting date effects on corn, soybean, and winter wheat production in Northeast Colorado. International Workshop on Application, Enhancements and Collaborations of ARS RZQWM Models, Fort Collins, CO, April 20-22, 2004. p. 24-25.
MODELING ALTERNATIVE CROPPING SYSTEMS FOR CENTRAL GREAT PLAINS USING RZWQM -
Anapalli, S.S., Nielsen, D.C., Ma, L., Ahuja, L.R., Vigil, M.F., Benjamin, J.G. 2004. Modeling alternative cropping systems for central great plains using RZWQM. Proceedings of the International Workshop on Applications, Enhancements and Collaborations of ARS RZWQM and GPFARM Models. April 20-22, 2004. p.22-23.
AGRICULTURAL SYSTEM MODELS IN FIELD RESEARCH AND TECHNOLOGY TRANSFER -
Ahuja, L.R., Ma, L., Andales, A.A., Saseendran, S.A. 2004. Agricultural system models in field research and technology transfer. Second International Agronomy Congress Proceedings. Punjab Singh, I.P.S. Ahlawat and R.C. Gautam (eds.) Indian Society of Agronomy. pp. 226-233.
MODEL PARAMETERIZATION AT DIFFERENT SCALES: HOW DO WE ESTIMATE AND INCORPORATE SPATIAL INFORMATION? -
Green, T.R., Ascough Ii, J.C., Ahuja, L.R., Ma, L., Erskine, R.H. 2004. Model parameterization at different scales: how do we estimate and incorporate spatial information?. Intl. Workshop on Applications, Enhancements and Collaboration of ARS RZWQM and GPFARM Models, April 20-22, 2004, Fort Collins, CO.
THE FUTURE OF SPATIAL MODELING AT GPSRU -
Ascough Ii, J.C., Green, T.R., Ahuja, L.R., Mcmaster, G.S., Ma, L. 2004. The future of spatial modeling at GPSRU. Workshop Proceedings. Intl. Workshop on Applications, Enhancements, and Collaboration of ARS RZWQM and GPSFARM Models, April 20 - 22, 2004, Fort Collins, CO.
SPACE-TIME MODELING OF AGRICULTURAL LANDSCAPE VARIABILITY USING AGSIMGIS -
Ascough Ii, J.C., Green, T.R., Cipra, J.E., Ahuja, L.R., Ma, L. 2004. Space-time modeling of agricultural landscape variability using agsimgis. Annual Hydrology Days Conference Proceedings. March 10-12, 2004. Fort Collins, CO. pp. 10-21.
SCALING OF INFILTRATION AND REDISTRIBUTION OF WATER ACROSS SOIL TEXTURAL CLASSES -
Kozak, J.A., Ahuja, L.R. 2005. Scaling of infiltration and redistribution of water across soil textural classes. Soil Science Society of America Journal. 69:816-827.
SIMPLE PARAMETRIC METHODS TO ESTIMATE SOIL WATER RETENTION AND HYDRAULIC CONDUCTIVITY -
Timlin, D.J., Williams, R.D., Ahuja, L.R., Heathman, G.C. 2004. Simple parametric methods to estimate soil water retention and hydraulic conductivity. In: Development of Pedotransfer Functions in Soil Hydrology. Pachepsky, Y. and Rawls, W., editors. Amsterdam: Elsevier. 30:71-93.
CARBON BUDGET IN DRYLAND AGROECOSYSTEMS AFTER 12 YEARS IN NO-TILL AS AFFECTED BY CLIMATE GRADIENT, SLOPE POSITION, AND CROPPING INTENSITY -
Sherrod, L.A., Peterson, G.A., Westfall, D.G., Ahuja, L.R. 2004. Carbon budget in dryland agroecosystems after 12 years in no-till as affected by climate gradient, slope position, and cropping intensity. Great Plains Fertility Conf. Proceedings. Denver, CO. March 2-3, 2004. pp. 234-239.
DEVELOPING NATURAL RESOURCE MODELS USING THE OBJECT MODELING SYSTEM: FEASIBILITY AND CHALLENGES -
Ahuja, L.R., David, O., Ascough Ii, J.C. 2004. Developing natural resource models using the object modeling system: feasibility and challenges. Meeting Proceedings. International Environmental Modelling and Software Society (IEMSS) 2004 Conference - Complexity and Integrated Resources Management, Osnabruck, Germany. June 14-17, 2004.
BOOK REVIEW: MATHEMATICAL MODELING FOR SYSTEM ANALYSIS IN AGRICULTURAL RESEARCH BY KAREL D. VOHNOUT -
Ma, L., Ahuja, L.R. 2004. Book review: mathematical modeling for system analysis in agricultural research by karel d. vohnout. Agricultural Systems. Vol 81, pp. 273-274.
USING RZWQM TO PREDICT HERBICIDE LEACHING LOSSES IN SUBSURFACE DRAINAGE WATER -
Bakhsh, A., Ma, L., Ahuja, L.R., Hatfield, J.L., Kanwar, R.S. 2004. Using rzwqm to predict herbicide leaching losses in subsurface drainage water. Agricultural Systems. Vol 47(5):1415-1426. 2004.
TERRAIN-BASED SCALING AND SIMULATION OF CROPPING SYSTEMS -
Green, T.R., Erskine, R.H., Ascough Ii, J.C., Ahuja, L.R., Salas, J.D., Martinez, A. 2003. Terrain-based scaling and simulation of cropping systems. Meeting Proceedings. Integrative Modelling of Sustanable Land Use, ETH Zurich, Nov 24-25, 2003.
SIMULATING LATE SPRING NITROGEN TEST EFFECTS ON N LEACHING AND CROP PRODUCTION -
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 -
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 -
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).
SPATIAL AND TEMPORAL CORRELATIONS AMONG DRYLAND GRAIN YEILD AND SOIL-WATER CONTENT IN A SLOPING FIELD -
Andales, A.A., Ahuja, L.R., Green, T.R., Erskine, R.H., Peterson, G. 2003. Spatial and temporal correlations among dryland grain yeild and soil-water content in a sloping field. Agronomy Abstracts. Amer. Soc. of Agronomy, Denver, CO. Nov. 2-6, 2003.
SOIL ORGANIC CARBON POOLS AFTER 12 YEARS IN NO-TILL DRYLAND AGROECOSYSTEMS -
Sherrod, L.A., Peterson, G.A., Westfall, D.G., Ahuja, L.R. 2005. Soil organic carbon pools after 12 years in no-till dryland agroecosystems. Soil Science Society of America Journal. Vol. 69:1600-1608. 2005.
APPLICATION OF GPFARM TO SIMULATE FORAGE PRODUCTION AND COW-CALF WEIGHTS -
Andales, A.A., Derner, J.D., Bartling, P.N., Ahuja, L.R., Dunn, G.H., Hart, R.H. 2004. Application of gpfarm to simulate forage production and cow-calf weights. Society for Range Management Meeting Abstracts. No. 5.
APPLICATION OF THE ROOT ZONE WATER QUALITY MODEL (RZWQM) TO PESTICIDE FATE AND TRANSPORT: AN OVERVIEW -
Malone, R.W., Ahuja, L.R., Ma, L., Wauchope, R.D., Rojas, K.W., Ma, Q. 2004. A review of the root zone water quality model (RZWQM). Pest Management Science. 60:205-221.
HERBICIDE LEACHING AS AFFECTED BY MACROPORE FLOW AND WITHIN-STORM RAINFALL INTENSITY VARIATION: A RZWQM SIMULATION -
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.
SOIL ORGANIC CARBON POOLS AFTER 12 YEARS IN NO-TILL AGROECOSYSTEM AS IMPACTED BY CROPPING INTENSITY -
Sherrod, L.A., Peterson, G.A., Westfall, D.G., Ahuja, L.R. 2003. Soil organic carbon pools after 12 years in no-till agroecosystem as impacted by cropping intensity. Meeting Abstract. Amer. Soc. of Agronomy. Nov. 2-6, 2003. Denver, CO.
EVALUATION OF GPFARM FOR DRYLAND CROPPING SYSTEMS IN EASTERN COLORADO -
Andales, A.A., Ahuja, L.R., Peterson, G.A. 2003. Evaluation of gpfarm for dryland cropping systems in eastern colorado. Agronomy Journal. Vol. 95, pp. 1510-1524.
SPECIAL ISSUE: QUANTIFYING AGRICULTURAL MANAGEMENT EFFECTS ON SOIL PROPERTIES AND PROCESSES -
Ahuja, L.R. 2003. Special issue: quantifying agricultural management effects on soil properties and processes. Geoderma, Special Issue. Vol. 116, No. 1-2, pp. 1-248.
MODELING HYDROLOGY, METRIBUZIN DEGRADATION, AND METRIBUZIN TRANSPORT IN MACROPOROUS TILLED AND NO-TILL SILT LOAM SOIL USING RZWQM -
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.
SIMULATING NITRATE DRAINAGE LOSSES FROM A WALNUT CREEK WATERSHED FIELD -
Bakhsh, A., Hatfield, J.L., Kanwar, R.S., Ma, L., Ahuja, L.R. 2004. Simulating nitrate losses from walnut creek watershed. Journal of Environmental Quality. 33(1)114-123.
ASSIMILATION OF SURFACE SOIL MOISTURE TO ESTIMATE PROFILE SOIL WATER CONTENT: A FIELD AND MODELING EXPERIMENT -
Heathman, G.C., Starks, P.J., Ahuja, L.R., Jackson, T.J. 2003. Assimilation of surface soil moisture to estimate profile soil water content. Journal of Hydrology. 279:1-17.
BOOK REVIEW: CROP-SOIL SIMULATION MODELS: APPLICATIONS IN DEVELOPING COUNTRIES -
Saseendran, S.A., Ahuja, L.R., Ma, L. 2003. Book review: crop-soil simulation models: applications in developing countries. Journal of Environmental Quality. Vol 32, pp. 2445-2446.
CROPPING INTENSITY ENHANCES SOIL ORGANIC CARBON AND NITROGEN IN A NO-TILL AGROECOSYSTEM -
Sherrod, L.A., Peterson, G.A., Westfall, D.G., Ahuja, L.R. 2003. Cropping intensity enhances soil organic carbon and nitrogen in a no-till agroecosystem. Soil Science Society of America Journal. Vol 67, pp 1533-1543.
SCALING EFFECTS OF STANDING CROP RESIDUES ON THE WIND PROFILE -
Aiken, R.M., Nielsen, D.C., Ahuja, L.R. 2003. Scaling effects of standing crop residues on the wind profile. Agronomy Journal 95:1041-1046.
MODELING NITROGEN MANAGEMENT EFFECTS ON WINTER WHEAT PRODUCTION USING RZWQM AND CERES-WHEAT -
Saseendran, S.A., Nielsen, D.C., Ma, L., Ahuja, L.R., Halvorson, A.D. 2003. Modeling nitrogen management effects on winter wheat production using RZWQM and CERES-Wheat. Agronomy Journal 96:615-630.
TILLAGE EFFECT ON MACROPOROSITY AND HERBICIDE TRANSPORT IN PERCOLATE -
MALONE, R.W., LOGSDON, S.D., SHIPITALO, M.J., WEATERINGTON-RICE, J., AHUJA, L.R., MA, L. TILLAGE EFFECT ON MACROPOROSITY AND HERBICIDE TRANSPORT IN PERCOLATE. GEODERMA. 2003. v. 116. p. 191-215.
EVALUATION OF RZWQM UNDER VARYING IRRIGATION LEVELS IN EASTERN COLORADO -
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.
SCALING AND ESTIMATING THE SOIL WATER CHARACTERISTIC USING A ONE-PARAMETER MODEL. -
WILLIAMS, R.D., AHUJA, L.R. SCALING AND ESTIMATING THE SOIL WATER CHARACTERISTIC USING A ONE-PARAMETER MODEL. CRC PRESS, BOCA RATON, FL. SCALING METHODS IN SOIL PHYSICS. 2003. P. 35-40.
PREDICTING THE EFFECTS OF AGRICULTURAL MANAGEMENT PRACTICES ON SUBSURFACE DRAINAGE: NITRATE -
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.
PREDICTING THE EFFECTS OF AGRICULTURAL MANAGEMENT PRACTICES ON SUBSURFACE DRAINAGE: TILE FLOW -
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.
SOFTWARE FOR PEST-MANAGEMENT SCIENCE: COMPUTER MODELS AND DATABASES FROM THE UNITED STATES DEPARTMENT OF AGRICULTURE - AGRICULTURAL RESEARCH SERVICE -
SCALING SOIL HYDRAULIC PROPERTIES WITH A ONE-PARAMETER MODEL -
WILLIAMS, R.D., AHUJA, L.R. 2001. SCALING SOIL HYDRAULIC PROPERTIES WITH A ONE-PARAMETER MODEL. AMERICAN SOCIETY OF AGRONOMY. Abstract No. s01-williams144754-o. CD-ROM.
QUANTIFYING AGRICULTURAL MANAGEMENT EFFECTS ON SOIL PROPERTIES AND PROCESSES -
Ahuja, L.R. 2003. Quantifying agricultural management effects on soil properties and processes. Geoderma Special Issue. Vol. 116, pp. 1-2. 2003.
GPFARM CYCLING OF CROP RESIDUES -
Shaffer, M.J., Bartling, P.N., Vigil, M.F., Mcmaster, G.S., Dunn, G.H., Ascough Ii, J.C., Ahuja, L.R. 2002. Gpfarm cycling of crop residues. American Society of Agronomy Meetings. Indianapolis, IN. November 10-14, 2002.
ADVANCES AND CHALLENGES IN PREDICTING AGRICULTURAL MANAGEMENT EFFECTS ON SOIL HYDRAULIC PROPERTIES -
GREEN, T.R., AHUJA, L.R., BENJAMIN, J.G. ADVANCES AND CHALLENGES IN PREDICTING AGRICULTURAL MANAGEMENT EFFECTS ON SOIL HYDRAULIC PROPERTIES. GEODERMA. 2003. Vol. 116, pp. 3-27.
USE OF LIMITED SOIL PROPERTY DATA AND MODELING TO ESTIMATE ROOT ZONE SOIL WATER CONTENT. -
STARKS, P.J., HEATHMAN, G.C., AHUJA, L.R., MA, L. USE OF LIMITED SOIL PROPERTY DATA AND MODELING TO ESTIMATE ROOT ZONE SOIL WATER CONTENT.. JOURNAL OF HYDROLOGY. 2003. v. 272 p. 131-147.
MULTICRITERIA SPATIAL DECISION SUPPORT SYSTEMS FOR AGRICULTURE: OVERVIEW, APPLICATIONS, AND FUTURE RESEARCH DIRECTIONS -
Ascough II, J.C., Rector, H.D., Hoag, D.L., Mcmaster, G.S., Vandenberg, B.C., Shaffer, M.J., Weltz, M.A., Ahuja, L.R. 2002. Multicriteria spatial decision support systems for agriculture: overview, applications, and future research directions. Environmental Modeling International Conference Proceedings. IN: A.E. Rizzoli and A.J. Jakeman (Eds.), Integrated Assessment and Decision Support Proceedings of the 1st Biennial Meeting of the IEMSS. June 24-27, 2002, Lugano, Switzerland. Vol. 3, pp. 175-180.
PARAMETERIZING GPFARM: AN AGRICULTURAL DECISION SUPPORT SYSTEM FOR INTEGRATING SCIENCE, ECONOMICS, RESOURCE USE, AND ENVIRONMENTAL IMPACTS -
Mcmaster, G.S., Ascough Ii, J.C., Shaffer, M.J., Byrne, P.F., Haley, S.D., Nielsen, D.C., Andales, A.A., Dunn, G.H., Weltz, M.A., Ahuja, L.R. 2002. Parameterizing gpfarm: an agricultural decision support system for integrating science, economics, resource use, and environmental impacts. International Society of Ecological Modeling Annual Meetings. IN: A.E. Rizzoli and A.J. Jakeman (Eds.), Integrated Assessment and Decision Support Proceedings of the 1st Biennial Meeting of the IEMSS. June 24-27, 2002, Lugano, Switzerland. Vol. 1, pg 72-77.
SOFTWARE FOR PEST MANAGEMENT SCIENCE: COMPUTER MODELS AND DATABASES FROM THE US DEPARTMENT OF AGRICULTURE-AGRICULTURAL RESEARCH SERVICE -
Wauchope, R.D., Ahuja, L.R., Arnold, J.G., Bigner, R., Lowrance, R.R., Adams, L.D. 2002. Software for pest management science: computer models and databases from the us department of agriculture-agricultural research service. Pest Management Science. 59:691-698(2002).
SOFTWARE FOR PEST MANAGEMENT SCIENCE: COMPUTER MODELS AND DATABASES FROM THE US DEPARTMENT OF AGRICULTURE-AGRICULTURAL RESEARCH SERVICE -
Wauchope, R.D., Ahuja, L.R., Arnold, J.G., Bigner, R., Lowrance, R.R., Van Genuchten, M.T., Adams, L.D. 2002. Software for pest management science: computer models and databases from the us department of agriculture-agricultural research service. Pest Management Science. 59:691-698 (2003).
SIMULATING SOYBEAN WATER STRESS EFFECTS WITH RZWQM AND CROPGRO MODELS -
NIELSEN, D.C., MA, L., AHUJA, L.R., HOOGENBOOM, G. SIMULATING SOYBEAN WATER STRESS EFFECTS WITH RZWQM AND CROPGRO MODELS. AGRONOMY JOURNAL. 2002. v. 94. p. 1234-1243.
EVALUATION OF ROOT ZONE WATER QUALITY MODEL FOR SIMULATION OF NON-POINT SOURCE POLUTION FROM AGRICULTURAL LANDS -
FIELD CAPACITY OF WATER IN SOILS: CONCEPTS, MEASUREMENT, AND APPROXIMATION -
Nachabe, M.H., Ahuja, L.R., Rokicki, R. 2004. Field capacity of water in soils: concepts, measurement, and approximation. Encyclopedia of Water Science. Stewart, B.A. and Howell, T.A. (eds.) Marcel-Dekker. Book chapter. pp. 915-918. 2003.
APPLICATION AND TESTING OF GPFARM: A FARM AND RANCH DECISION SUPPORT SYSTEMFOR EVALUATING ECONOMIC AND ENVIRONMENTAL SUSTAINABILITY OF AGRICULTURAL ENTERPRISES -
Dunn, G.H., Weltz, M.A., Mcmaster, G.S., Ascough Ii, J.C., Shaffer, M.J., Palic, D.B., Vandenberg, B.C., Bartling, P.N., Edmunds, D.A., Hoag, D.L., Ahuja, L.R. 2002. Application and testing of gpfarm: a farm and ranch decision support systemfor evaluating economic and environmental sustainability of agricultural enterprises. Acta Horticulture (ISHS) 593:171-177. www.actahort.og/books/593/593_22.htm
ASSESSMENT OF THE WATER QUALITY IMPACTS OF FARMING SYSTEMS BY INTEGRATING DATABASES AND SIMULATION MODELS -
HOW GOOD IS GOOD ENOUGH? WHAT INFORMATION IS NEEDED FOR AGRICULTURAL WATER QUALITY PLANNING AND HOW CAN IT BE PROVIDED MOST AFFORDABLY? 1348 -
Adaptive grid refinement in numerical models for water flow and solute transport in soils: A review -
Mansell, R.S., Ma, L., Ahuja, L.R., Bloom, S.A. 2002. Adaptive grid refinement in numerical models for water flow and solute transport in soils: A review. Vadose Zone Journal. 1:222-238.
GPFARM: AN INTEGRATED DECISION SUPPORT SYSTEM FOR SUSTAINABLE GREAT PLAINS AGRICULTURE -
ASCOUGH II, J.C., HOAG, D.L., SHAFFER, M.J., MCMASTER, G.S., AHUJA, L.R. GPFARM: AN INTEGRATED DECISION SUPPORT SYSTEM FOR SUSTAINABLE GREAT PLAINS AGRICULTURE. MEETING ABSTRACT. 2002.
TOPOGRAPHIC ANALYSIS, SCALING AND MODELS TO EVALUATE SPATIAL/TEMPORAL VARIABILITY OF LANDSCAPE PROCESSES AND MANAGEMENT -
Ahuja, L.R., Green, T.R., Erskine, R.H., Ma, L., Ascough Ii, J.C., Dunn, G.H., Shaffer, M.J., Martinez, A. 2002. Topographic analysis, scaling and models to evaluate spatial/temporal variability of landscape processes and management. CRC Book: Agricultural Sys Models in Field Research and Technology Transfer. April 2002. Chapter 13, pp 265-272.
WHOLE SYSTEM INTEGRATION AND MODELING: ESSENTIAL TO AGRICULTURAL SCIENCE AND TECHNOLOGY IN 21ST CENTURY -
Ahuja, L.R., Ma, L., Howell, T.A. 2002. Whole system integration and modeling: essential to agricultural science and technology in 21st century. CRC Book: Agricultural Sys Models in Field Research and Technology Transfer. Lewis Publishers. April 2002. Chapter One, pp 1-7.
AN EVALUATION OF RZWQM, CROPGRO, AND CERES-MAIZE FOR RESPONSE TO WATER STRESS IN THE CENTRAL GREAT PLAINS -
SPATIAL CROP YIELD AND SOIL WATER CONTENT: MEASUREMENT, SCALING AND TOPOGRAPHIC ANALYSES -
Green, T.R., Erskine, R.H., Martinez, A., Murphy, M.R., Ahuja, L.R., Salas, J.D., Ramirez, J.A. 2001. Spatial crop yield and soil water content: measurement, scaling and topographic analyses. International Congress on Modeling and Simulation Proceedings. December 10, 2001.
SIMULATING NITRATE LOSSES FROM WALNUT CREEK WATERSHED -
PARAMETERIZATION OF AGRICULTURAL SYSTEM MODELS: CURRENT APPROACHES AND FUTURE NEEDS -
GPFARM SIMULATION OF SOIL NUTRIENT CYCLING UNDER MAIZE -
Shaffer, M.J., Yu, M., Bartling, P.N., Ho, N., Mcmaster, G.S., Ascough Ii, J.C., Ahuja, L.R., Weltz, M.A. 2001. Gpfarm simulation of soil nutrient cycling under maize. Agronomy Abstracts. American Society of Agronomy Meetings, October 2001.
WATER TRANSPORT MODELING USING RZWQM -
EVALUATION OF ROOT ZONE WATER QUALITY MODEL FOR SIMULATION OF NONPOINT SOURCE POLLUTION FROM AGRICULTURAL LANDS -
BAKHSH, A., HATFIELD, J.L., KANWAR, R.S., MA, L., AHUJA, L.R. EVALUATION OF ROOT ZONE WATER QUALITY MODEL FOR SIMULATION OF NONPOINT SOURCE POLLUTION FROM AGRICULTURAL LANDS. ASAE ANNUAL INTERNATIONAL MEETING. 2001. CD-ROM. MADISON, WI.
CALCULATING SOIL WATER CONTENT WITH A ONE-PARAMETER MODEL USING AIR-ENTRY PRESSURE AND POROSITY VALUES -
WILLIAMS, R.D., AHUJA, L.R. 2001. CALCULATING SOIL WATER CONTENT WITH A ONE-PARAMETER MODEL USING AIR-ENTRY PRESSURE AND POROSITY VALUES. SOIL SCIENCE SOCIETY OF AMERICA ANNUAL MEETING. v. 92. Abstract p. 201.
CROPPING INTENSIFICATION IN DRYLAND SYSTEMS IMPROVES SOIL PHYSICAL PROPERTIES: REGRESSION RELATIONS -
Perterson, G.A., Shaver, T.M., Sherrod, L.A., Ahuja, L.R. 2002. Cropping intensification in dryland systems improves soil physical properties: regression relations. ASA-CSSA-SSSA Proceedings.
EVALUATION OF THE ROOT ZONE WATER QUALITY MODEL (RZWQM) -
SURFACES SOIL PHYSICAL PROPERTIES AFTER TWELVE YEARS OF DRYLAND NO-TILL MANAGEMENT -
Shaver, T.M., Peterson, G.A., Ahuja, L.R., Westfall, D.G., Sherrod, L.A., Dunn, G.H. 2002. Surfaces soil physical properties after twelve years of dryland no-till management. Soil Science Society of America Journal. (2002) 66:1296-1303.
COMPUTER MODELS TO GUIDE SOIL WATER MANAGEMENT FOR PLANTS -
GPFARM:AN INTEGRATED DECISION SUPPORT SYSTEM FOR SUSTAINABLE GREAT PLAINS AGRICULTURE -
AGRICULTURAL SYSTEM MODELS IN FIELD RESEARCH AND TECHNOLOGY TRANSFER -
Ahuja, L.R., Ma, L., Howell, T.A. 2002. Agricultural system models in field research and technology transfer. CRC Book: Agricultural Sys Models in Field Research and Technology Transfer. 341 pp. 2002.
MACROPORE COMPONENT ASSESSMENT OF THE ROOT ZONE WATER QUALITY MODEL (RZWQM)USING NO-TILL SOIL BLOCKS -
PREFERENTIAL FLOW EFFECTS ON NO3-N LOSSES WITH TILE FLOW -
BAKHSH, A., KANWAR, R.S., JAYNES, D.B., COLVIN, T.S., AHUJA, L.R. PREFERENTIAL FLOW EFFECTS ON NO3-N LOSSES WITH TILE FLOW. INTERNATIONAL SYMPOSIUM ON PREFERENTIAL FLOW. 2001. P. 41-44.
SIMULATING EFFECTS OF VARIABLE NITROGEN APPLICATION RATES ON CORN YIELDS AND NO3-N LOSSES WITH SUBSURFACE DRAINAGE WATER -
Bakhsh, A., Kanwar, R.S., Jaynes, D.B., Colvin, T.S., Ahuja, L.R. 2001. Simulating effects of variable nitrogen application rates on corn yields and NO3-N losses with subsurface drainage water. Transactions of the ASAE. 44(2):269-276.
SIMULATING THE IMPACT OF N-FERTILIZER APPLICATION RATES ON NO3-N LOSSES WITH SUBSURFACE DRAINAGE WATER AND CROP YIELD USING RZWQM -
BAKHSH, A., KANWAR, R.S., JAYNES, D.B., COLVIN, T.S., AHUJA, L.R. SIMULATING THE IMPACT OF N-FERTILIZER APPLICATION RATES ON NO3-N LOSSES WITH SUBSURFACE DRAINAGE WATER AND CROP YIELD USING RZWQM. ASAE ANNUAL INTERNATIONAL MEETING. 2000. PAPER NO. 00-2071.
SIMULATED RANGELAND PRODUCTION AND CARBON SEQUESTRATION -
Hanson, J.D., M.J. Shaffer, and L.R. Ahuja. Simulating Rangeland Production and Carbon Sequestration. pgs. 345-370 IN: Follett, Kimble and Lal (eds.), The Potential of U.S. Grazing Lands to Sequester Carbon and Mitigate the Greenhouse Effect. 2000. (Invited Book Chapter_
SIMULATION OF WATER AND PESTICIDE MOVEMENT THROUGH MACROPORES USING THE ROOT ZONE WATER QUALITY MODEL (RZWQM) -
USING THE GREGSON ONE-PARAMETER MODEL TO ESTIMATE THE SOIL-WATER RETENTION. -
WILLIAMS, R.D., AHUJA, L.R. 2000. USING THE GREGSON ONE-PARAMETER MODEL TO ESTIMATE THE SOIL-WATER RETENTION. SOIL DYNAMICS INTERNATIONAL CONFERENCE PROCEEDINGS. Absract p. 9-B.
TOOLS FOR NUTRIENT MANAGEMENT IN AGRICULTURE -
QUANTIFYING WHEEL-TRACK EFFECTS ON SOIL HYDRAULIC PROPERTIES FOR AGRICULTURAL SYSTEMS MODELING -
PREDICTION OF NO3-N LOSSES WITH SUBSURFACE DRAINAGE FROM MANURED AND UAN-FERTILIZED PLOTS USING GLEAMS -
Bakhsh, A., Kanwar, R.S., Jaynes, D.B., Colvin, T.S., Ahuja, L.R. 2000. Prediction of NO3-N losses with subsurface drainage from manured and uan-fertilized plots using gleams. Transactions of the ASAE. 43(1):69-77.
ASSESSMENT OF THE MACROPORE COMPONENT OF RZWQM -
DEVELOPMENT OF THE ROOT ZONE WATER QUALITY MODEL (RZWQM)FOR OVER WINTER CONDITIONS -
ROOT ZONE WATER QUALITY MODEL SENSITIVITY ANALYSIS USING MONTE CARLO SIMULATION -
USING THE GREGSON ONE-PARAMETER MODEL TO ESTIMATE THE SOIL-WATER RETENTION. -
Williams, R.D., Ahuja, L.R. 2000. Using the gregson one-parameter model to estimate the soil-water retention. In: Proc. 4th Intl. Conf. on Soil Dynamics (ICSD-IV), Adelaide, South Australia. CD-ROM.
CHAPTER 9 SOIL HEAT TRANSPORT SOIL FREEZING AND SNOWPACK CONDITIONS -
SIMULATING THE IMPACTS OF PRECISION FARMING AND VARIABLE N-FERTILIZER RATES ON NO3-N LOSSES AND CROP YIELD USING RZWQM -
VALIDATION OF THE ROOT ZONE WATER QUALITY MODEL (RZWQM): A REVIEW -
SCALE ISSUES IN MODELING AGROECOSYSTEMS: A REVIEW -
Ascough Ii, J.C., Green, T.R., Ruan, H., Ahuja, L.R. 1999. Scale issues in modeling agroecosystems: a review. Agronomy Abstracts. American Society of Agronomy Meetings. October 31, 1999.
EFFECTS OF OVERLAND AND LATERAL SUBSURFACE FLOW ON SOIL WATER VARIABILITY AT THE FIELD SCALE: MODEL DEVELOPMENT -
Ruan, H., Green, T.R., Ascough Ii, J.C., Ahuja, L.R. 1999. Effects of overland and lateral subsurface flow on soil water variability at the field scale: model development. Agronomy Abstracts, American Society of Agronomy Meetings, October 1999.
PRELIMINARY FRACTAL ANALYSIS OF CROP YIELD AND EXPERIMENTAL DESIGN FOR MODELING SPACE-TIME VARIABILITY UNDER DRYLAND AGRICULTURE -
THE ROOT ZONE WATER QUALITY MODEL: A COMPUTER MODEL FOR MORE REALISTIC PREDICTION OF LAND AND WATER POLLUTION BY PESTICIDES AND OTHER AGRICULTURALCHEMICALS. -
ESTIMATING SOIL WATER RETENTION USING THE GREGSON ONE-PARAMETER MODEL -
ENAHANCING PRODUCTIVITY OF CENTRAL GREAT PLAINS DRYLAND AGROECOSYSTEMS -
RZWQM - AN ARS MODEL FOR SIMULATING EFFECTS OF MANAGEMENT ON WATER QUALITY AND CROP PRODUCTION -
SOIL HEAT TRANSPORT, SOIL FREEZING AND SNOWPACK CONDITIONS -
NITROGEN LEACHING WITH ALTERNATE AND EVERY FURROW IRRIGATION AND FERTILIZERBANDS -
ESTIMATING THE SOIL WATER RETENTION CURVE WITH SOIL BULK DENSITY AND -33 K PA VALUE. -
MACROPORE MODELING: STATE OF THE SCIENCE -
ESTIMATING SOIL WATER RETENTION CURVES USING TEXTURE CLASS MEAN VALUES OF AIR ENTRY PRESSURE AND POROSITY. -
ESTIMATING SOIL PROPERTIES FROM MICROWAVE MEASUREMENTS OF SOIL MOISTURE -
MODELLING CORN ROOTING PATTERNS AND THEIR EFFECTS ON WATER UPTAKE AND NITRATE LEACHING -
WATER AND BROMIDE MOVEMENT INTO A BURIED ARTIFICIAL MACROPORE -
ROOT ZONE WATER QUALITY MODEL EVALUATION OF DRYLAND/NO-TILL CROP PRODUCTIONIN EASTERN COLORADO -
THE GPFARM DECISION SUPPORT SYSTEM FOR WHOLE FARM/RANCH MANAGEMENT -
PATTERNS IN SOIL CHARACTERISTICS AND DRYLAND SPRING WHEAT BIOMASS WITHIN A SOIL MAPPING UNIT. -
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