Projects

Improving Soil and Nutrient Management Systems for Sustained Productivity and Environmental Quality Appropriated (D)   Accession Number: 410759

Gracenet: An Assessment of Soil Carbon Sequestration and Greenhouse Gas Mitigation by Agricultural Management Cross Location (L)   Accession Number: 411610

Nitrogen Source Effects on Nitrous Oxide Emissions from Irrigated and Rainfed Production Systems Trust (T)   Accession Number: 416500

Publications

Nitrogen Rate and Source Effects on Nitrous Oxide Emissions from Irrigated Cropping Systems in Colorado - (Other)

Halvorson, A.D., Del Grosso, S.J., Alluvione, F. 2009. Nitrogen Rate and Source Effects on Nitrous Oxide Emissions from Irrigated Cropping Systems in Colorado. Better Crops with Plant Food. 93 (1):16-18.

Nitrogen Source Affects Nitrous Oxide Emissions from Irrigated No-Till Corn in Colorado (USA) - (Proceedings/Symposium) - (23-Dec-08)

Cob Characteristics in Irrigated Central Great Plains Studies - (Peer Reviewed Journal)

Halvorson, A.D., Johnson, J.M. 2009. Cob Characteristics in Irrigated Central Great Plains Studies. Agronomy Journal. 101:390-399.

Nitrogen Management for Irrigated Corn - (Popular Publication)

Maddux, L.D., Halvorson, A.D. 2008. Nitrogen Management for Irrigated Corn. International Plant Nutrition Institute (IPNI) Agronomy Information Bulletin. In W.M. Stewart and W.B. Gordon (eds). Fertilizing for Irrigated Corn: Guide to Best Management Practices. p. 3-1 to 3-6.

Vertical distribution of corn stover dry mass - (Abstract)

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

QuickBird Satellite and Ground-based Multispectral Data Correlations with Agronomic Parameters of Irrigated Maize Grown in Small Plots - (Peer Reviewed Journal)

Bausch, W.C., Halvorson, A.D., Cipra, J. 2008. QuickBird Satellite and Ground-based Multispectral Data Correlations with Agronomic Parameters of Irrigated Maize Grown in Small Plots. Biosystems Engineering 101 (2008), pp. 306-315 DOI information: 10.1016/j.biosystemseng.2008.09.011

Nitrogen Source Effects On Nitrous Oxide Emissions From An Irrigated No-Till Corn Field (GRACEnet) - (Abstract) - (25-Jun-08)

Management Effects On Nitrous Oxide Emissions From Irrigated Cropping Systems - (Abstract)

Halvorson, A.D., Del Grosso, S.J., Reule, C.A. 2008. Management Effects On Nitrous Oxide Emissions From Irrigated Cropping Systems. Soil and Water Conservation Society meeting. July 26-30, 2008. On-line Conference abstract. Book, p. 52.

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

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

Soil In The Environment - (Literature)

Halvorson, A.D. 2008. Book Review. Soil In The Environment. Soil Science Society of America Journal 72:1185.

Economics of Irrigated Continuous Corn under Conventional-Till and No-Till in Northern Colorado - (Peer Reviewed Journal)

Archer, D.W., Halvorson, A.D., Reule, C.A. 2008. Economics of irrigated continuous corn under conventional-till and no-till in northern colorado. Agronomy Journal, 100:1166-1172.

Achieving Economic and Greenhouse Gas Goals Through Tillage and N Management - (Proceedings/Symposium)

Archer, D.W., Halvorson, A.D. 2008. Achieving economic and greenhouse gas goals through tillage and n management. Proceedings Great Plains Soil Fertility Conference.

Nitrogen Effects on Onion Yield Under Drip and Furrow Irrigation - (Peer Reviewed Journal)

Halvorson, A.D., Reule, C.A., Bartolo, M., Berrada, A. 2008. Nitrogen Effects on Onion Yield Under Drip and Furrow Irrigation. Agronomy Journal 100:1062-1069.

Effects of Two Years of Manure and Nitrogen Fertilizer On Corn Yield, N and P Uptake, and Soil N and P Under Drip and Furrow Irrigation - (Experiment Station) - (15-Feb-08)

Nitrogen Fertilization Effects on Nitrous Oxide Emissions from Irrigated Cropping Systems - (Proceedings/Symposium)

Halvorson, A.D., Del Grosso, S.J., Reule, C.A. Nitrogen fertilization effects on nitrous oxide emissions from irrigated cropping systems. Proc. of 2008 Great Plains Soil Fertility Conference. Denver, CO March 4-5, 2008. Kansas State University, Manhattan and Potash and Phosphate Institute, Brookings, SD. 12:28-22.

Residual Effects Of Manure and N Fertilizer On Corn Yield and Soil N and P Under Drip and Furrow Irrigation - (Proceedings/Symposium)

Berrada, A., Halvorson, A.D., Bartolo, M., Valliant, J. Residual Effects Of Manure and N Fertilizer On Corn Yield and Soil N and P Under Drip and Furrow Irrigation. In Proc. of Great Plains Soil Fertility Conference. Denver, CO March 4-5, 2008. Kansas State University, Manhattan and Potash and Phosphate Institute, Brookings, SD. 12:245-251.

Management of Dryland Saline Seeps - (Book/Chapter) - (20-Dec-07)

Testing DAYCENT Model Simulations of Corn Yields and Nitrous Oxide Emissions in Irrigated Tillage Systems in Colorado - (Peer Reviewed Journal)

Del Grosso, S.J., Halvorson, A.D., Parton, W.J. 2008. Testing DAYCENT Model Simulations of Corn Yields and Nitrous Oxide Emissions in Irrigated Tillage Systems in Colorado. Journal of Environmental Quality 37:1383-1389.

Nitrogen, Tillage, and Crop Rotation Effects on Nitrous Oxide Emissions from Irrigated Cropping Systems - (Peer Reviewed Journal)

Halvorson, A.D., Del Grosso, S.J., Reule, C.A. 2008. Nitrogen, Tillage, and Crop Rotation Effects on Nitrous Oxide Emissions from Irrigated Cropping Systems. Journal of Environmental Quality 37:1337-1344.

Corn Response to Nitrogen Following Onion in Rotation - (Experiment Station) - (15-Oct-07)

Onion Response to Nitrogen and Irrigation Type Following Soybean in 2006 - (Experiment Station) - (15-Oct-07)

Irrigated, No-Till Corn and Barley Response to Nitrogen in Northern Colorado - (Peer Reviewed Journal)

Halvorson, A.D., Reule, C.A. 2007. Irrigated, No-Till Corn and Barley Response to Nitrogen in Northern Colorado. Agronomy Journal. 99:1521-1529.

Nitrous Oxide Emissions from Irrigated Cropping Systems in Colorado - (Abstract)

Halvorson, A.D., Del Grosso, S.J., Reule, C.A. 2007. Nitrous Oxide Emissions from Irrigated Cropping Systems in Colorado. ASA-CSSA-SSSA Annual Meeting Abstracts. CD-ROM.

Denitirification and N2O emission in arable soils: Effect of tillage, N source and soil moisture. - (Peer Reviewed Journal)

Liu, X.J., Mosier, A.R., Halvorson, A.D., Reule, C.A., Zhang, F. 2007. Denitirification and N2O emission in arable soils: Effect of tillage, N source and soil moisture. Journal of Soil Biology and Biochemistry. 39:2362-2370.

How to Enhance Soil Organic Carbon Sequestration - (Peer Reviewed Journal)

Halvorson, A.D., Reule, C.A. 2007. How to Enhance Soil Organic Carbon Sequestration. Fluid Journal. Vol. 15, No. 3, Issue #57, pp. 17-19.

Management Practices to Mitigate N2O Emissions from Agricultural Soils - (Abstract)

Halvorson, A.D. 2007. Management Practices to Mitigate N2O Emissions from Agricultural Soils. Meeting Abstract. Oral Presentation.

Crop Management Effects on Soil Carbon and Nitrogen in Northern Texas - (Proceedings/Symposium)

Halvorson, A.D., Reule, C.A., Poole, J. 2007. Crop Management Effects on Soil Carbon and Nitrogen in Northern Texas. Fluid Fertilizer Foundation Symposium Proceedings. 24:67-74. Also a CD ROM publication.

Onion Response to Nitrogen Fertilization Under Drip and Furrow Irrigation - (Experiment Station)

Halvorson, A.D., Bartolo, M., Reule, C.A., Barrada, A. 2007. Onion Response to Nitrogen Fertilization Under Drip and Furrow Irrigation. In Colorado Agric. Exp. Sta. Technical Report TR07-14, Colorado State University, Fort Collins, CO. p. 49-53.

The Effects of Drip Irrigation and Fertilizer Rate on Corn Yield and Soil Salinity in the Arkansas River Valley - (Experiment Station)

Berrada, A., Halvorson, A.D., Bartolo, M., Valiant, J. 2007. The Effects of Drip Irrigation and Fertilizer Rate on Corn Yield and Soil Salinity in the Arkansas River Valley. In Colorado Agric. Exp. Sta. Technical Report TR07-14, Colorado State University, Fort Collins, CO. p. 6-12.

Nitrogen, Tillage, and Crop Rotation Effects on Nitrous Oxide Emissions from Irrigated Cropping Systems. - (Abstract)

Halvorson, A.D., Del Grosso, S.J. 2007. Nitrogen, Tillage, and Crop Rotation Effects on Nitrous Oxide Emissions from Irrigated Cropping Systems. USDA Greenhouse Gas Symposium. In Abstracts of 4th USDA Symposium on Greenhouse Gases and Carbon Sequestration in Agriculture and Forestry. Feb. 6-8, 2007, Baltimore, MD.

Excess N in Soil-Crop Systems: Assessment and Integration with N Recommendations - (Abstract)

Huggins, D.R., D.B. Beegle, K. Bronson, A.D. Halvorson, J.J. Meisinger, J.S. Schepers. 2006. Excess N in Soil-Crop Systems: Assessment and Integration with N Recommendations. In Annual meetings abstracts [CD-ROM]. ASA, CSSA, and SSSA, Madison, WI.

Nitrogen and tillage effects on wheat leaf spot diseases in the northern Great Plains - (Peer Reviewed Journal)

Krupinsky, J.M., Halvorson, A.D., Tanaka, D.L., Merrill, S.D. 2007. Nitrogen and tillage effects on wheat leaf spot diseases in the northern Great Plains. Agron. J. 99:562-569.

Onion Response to Nitrogen Fertilization Under Drip and Furrow Irrigation - (Proceedings/Symposium)

Halvorson, A.D., Bartolo, M., Reule, C.A., Barrada, A. 2006. Onion Response to Nitrogen Fertilization Under Drip and Furrow Irrigation. National Allium Research Conference. p. 73-78.

The Effect of Subsurface Drip and Furrow Irrigation on the Movement of Salts and Nitrate in the Root Zone. - (Proceedings/Symposium)

Berrada, A., Halvorson, A.D., Bartolo, M., Valliant, J. 2006. The Effect of Subsurface Drip and Furrow Irrigation on the Movement of Salts and Nitrate in the Root Zone.. Irrigation Associations Exposition and Technical Conference Proceedings. P. 1-13.

Irrigated Corn and Soybean Response to Nitrogen under No-Till in Northern Colorado - (Peer Reviewed Journal)

Halvorson, A.D., Reule, C.A. 2006. Irrigated corn and soybean response to nitrogen under no-till in northern colorado. Agronomy Journal. 98:1367-1374.

The Effects of Subsurface Drip and Furrow Irrigation on the Movement of Salts and Nitrate in the Root Zone - (Proceedings/Symposium)

Berrada, A.F., Halvorson, A.D., Bartolo, M.E., Valliant, J. 2006. The effects of subsurface drip and furrow irrigation on the movement of salts and nitrate in the root zone. Meeting Abstract.

Managing for Efficient Use of Limited Irrigation Water: Current Practices, Research Needs, and Potential Role of Models. - (Abstract)

Halvorson, A.D., Hergert, G.W., Schlegel, A.J. 2006. Managing for efficient use of limited irrigation water: current practices, research needs, and potential role of models. Abstr., 36th Biological Systems Simulation Conference, April 11-13, Fort Collins, CO.

Evaluation of Active Optical Sensors for Assessment of Plant N in Irrigated Corn - (Proceedings/Symposium)

Bausch, W.C., Halvorson, A.D. 2006. Evaluation of active optical sensors for assessment of plant n in irrigated corn. Proceedings Great Plains Soil Fertility Conference. 11:149-154

Onion Response to Nitrogen Fertilization under Drip and Furrow Irrigation - (Proceedings/Symposium)

Halvorson, A.D., Bartolo, M., Reule, C.A., Berrada, A. 2006. Onion response to nitrogen fertilization under drip and furrow irrigation. Proceedings of Great Plains Soil Fertility Conference. Denver, CO, March 7-8, 2006. Kansas State University, Manhattan, Potash and Phosphate Institute. Brookings, SD. 11:7-12.

The Effect of Manure and N Rates on Corn Yield and Salt and Nitrate Movement in the Soil under Furrow and Drip Irrigation in the Arkansas River Valley - (Proceedings/Symposium)

Berrada, A., Halvorson, A.D., Bartolo, M., Valliant, J. 2006. The effect of manure and n rates on corn yield and salt and nitrate movement in the soil under furrow and drip irrigation in the arkansas river valley. Proceedings 2006 Great Plains Soil Fertility Conference, Denver, CO, March 7-8, 2006. Kansas State University, Manhattan and Potash and Phosphate Institute, Brookings, SD. 11-264-269.

Nitrogen and Crop-Rotation Effects on No-Till Irrigated Corn Yields - (Other)

Halvorson, A.D., Reule, C.A. 2006. Nitrogen and crop-rotation effects on no-till irrigated corn yields. Colorado Conservation Tillage Association Annual Conference Proceedings. Poster Presentation.

Irrigated Cropping System Effects on Soil Carbon and Nitrogen in Northern Texas. - (Proceedings/Symposium)

Halvorson, A.D., Reule, C.A., Poole, J. 2006. Irrigated cropping system effects on soil carbon and nitrogen in northern texas. Fluid Fertilizer Foundation Symposium Proceedings. 23:126-132. Also CD ROM publication.

Net Global Warming Potential and Greenhouse Gas Intensity in Irrigated Cropping Systems in Northeastern Colorado - (Peer Reviewed Journal)

Mosier, A.R., Halvorson, A.D., Reule, C.A., Liu, X. 2006. Net global warming potential and greenhouse gas intensity in irrigated cropping systems in northeastern Colorado. Journal of Environmental Quality. 35:1584-1598.

Tillage and Nitrogen Effects on Soil Carbon and Greenhouse Gas Emissions under Irrigated Continuous Corn - (Peer Reviewed Journal) - (01-Dec-05)

Drip Versus Furrow Irrigation for Onion Production in the Colorado Lower Arkansas River Valley - (Abstract)

Halvorson, A.D., Bartolo, M., Reule, C.A., Berrada, A. 2006. Drip versus furrow irrigation for onion production in the Colorado Lower Arkansas river Valley. Soil and Water Conservation Society. Abstract. July 22-26-2006, Keystone, CO. J. Soil and Water Conserv. 61(3):229.

The Impact of Nitrogen Placement and Tillage on No, N20, Ch4 and Co2 Fluxes from a Clay Loam Soil. - (Peer Reviewed Journal)

Liu, X.J., Mosier, A.R., Halvorson, A.D., Zhang, F.S. 2006. The impact of nitrogen placement and tillage on NO, N2O, CH4 and CO2 fluxes from a clay loam soil. Plant and Soil Journal 280 (1-2): 177-188.

Nitrogen and Tillage Effects on Irrigated Continuous Corn Yields - (Peer Reviewed Journal)

Halvorson, A.D., Mosier, A.R., Reule, C.A., Bausch, W.C. 2006. Nitrogen and tillage effects on irrigated continuous corn yields. Agronomy Journal. 98:63-71.

Chile Pepper Rsponse to Nitrogen Fertilization in the Arkansas Valley of Colorado. Colorado Agricultural Experiment Station Technical Bulletin Tr05 - (Experiment Station)

Halvorson, A.D., Bartolo, M., Reule, C.A. 2007. Chile pepper rsponse to nitrogen fertilization in the Arkansas Valley of Colorado. Colorado Agric. Exp. Sta. Technical Report TR07-14, Colorado State University, Fort Collins, CO. p. 65-68

Nitrogen and Tillage Affects on Irrigated Continuous Corn Yields - (Abstract)

Halvorson, A.D., Mosier, A.R., Reule, C.A., Bausch, W.C. 2005. Nitrogen and tillage affects on irrigated continuous corn yields. American Society of Agronomy Abstracts. CD-ROM Publication.

Managing Greenhouse Gas Emissions in Semiarid Agroecosystems - (Abstract)

Liebig, M.A., Schuman, G.E., Martens, D.A., Halvorson, A.D. 2005. Managing greenhouse gas emissions in semiarid agroecosystems. (No. 0-3). IN: Abstracts, 2005 Intern. Annual Mtg., ASA-CSSA-SSSA, Madison, WI.

Tillage and Nitrogen Application Effects on Nitrous and Nitric Oxide Emissions from Irrigated Corn Fields. - (Peer Reviewed Journal)

Liu, X.J., Mosier, A.R., Halvorson, A.D., Zhang, F.S. 2005. Tillage and nitrogen application effects on nitrous and nitric oxide emissions from irrigated corn fields. Plant and Soil Journal. 276:235-249.

Corn Response to Nitrogen Fertilization in a Soil with High Residual Nitrogen - (Peer Reviewed Journal)

Halvorson, A.D., Swhweissing, F., Bartolo, M., Reule, C.A. 2005. Corn response to nitrogen fertilization in a soil with high residual nitrogen. Agronomy Journal. 97:1222-1229.

Effectiveness of Rzwqm for Simulating Alternative Great Plains Cropping Systems - (Peer Reviewed Journal)

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 - (Proceedings/Symposium)

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.

Tillage and Nitrogen Effects on Soil Carbon and Greenhouse Gas Emissions under Irrigated Continuous Corn - (Proceedings/Symposium)

Halvorson, A.D., Mosier, A.R., Reule, C.A., Liu, X.J. 2005. Tillage and nitrogen effects on soil carbon and greenhouse gas emissions under irrigated continuous corn. Greenhouse Gas Emissions and Carbon Sequestration Symposium. p. 112.

Soil Organic Carbon and Nitrogen Changes under Irrigation in Northern Texas. - (Proceedings/Symposium)

Halvorson, A.D., Reule, C.A., Poole, J. 2005. Soil organic carbon and nitrogen changes under irrigation in northern texas. Fluid Fertilizer Foundation Symposium Proceedings. Scottsdale, AZ. 22:154-159 and CD-ROM.

Phosphorous: Agriculture and the Environment. - (Book/Chapter)

Bundy, L.G., Tunney, H., Halvorson, A.D. 2005. Phosphorous: agriculture and the environment. Soil Science Society of America Special Publication Book Chapter. Chapter 22. p. 685-727. (J.T.Sims and A.H. Sharpley (eds.).

Crop Residue Carbon and Nitrogen Returned to the Soil in Irrigated Cropping Systems - (Abstract)

Halvorson, A.D., Schlegel, A., Mosier, A.R., Reule, C.A. 2004. Crop residue carbon and nitrogen returned to the soil in irrigated cropping systems. Agronomy Abstracts. CD-ROM.

Impact of Tillage and N-Fertilization on Trace Gas Exchange in Irrigated Corn in Northeastern Colorado - (Abstract)

Mosier, A.R., Halvorson, A.D., Reule, C.A., Liu, X.J. 2004. Impact of tillage and n-fertilization on trace gas exchange in irrigated corn in northeastern colorado. American Society of Agronomy Abstracts. CD-ROM.

Nitrogen Requirements of Irrigated Corn in the Colorado Arkansas Valley - (Experiment Station)

Halvorson, A.D., Schweissing, F., Bartolo, M., Reule, C.A. 2004. Nitrogen requirements of irrigated corn in the colorado arkansas valley. Colorado Agricultural Experiment Station Technical Report TR04-07, Colorado State University, Fort Collins, CO. p. 11-16.

Measusrement of Net Global Warming Potential in Three Agroecosystems - (Peer Reviewed Journal)

Mosier, A.R., Halvorson, A.D., Peterson, G.A., Robertson, G.P., Sherrod, L.A. 2005. Measusrement of net global warming potential in three agroecosystems. Nutrient Cycling in Agroecosystems. pp. 72: 67-76.

Predicting Winter Wheat Yield from Temperature and Rainfall - (Abstract)

Nielsen, D.C., Halvorson, A.D., Vigil, M.F., Byrne, P.F. 2004. Predicting winter wheat yield from temperature and rainfall. Agronomy Abstracts. Presented at the 2004 ASA-CSSA-SSSA International Annual Meeting. Oct. 31-Nov. 4, 2004. Seattle, WA

Runoff, Erosion, and Soil Eordibility on Crp Lands Converted to Crop and Hay Production - (Peer Reviewed Journal)

Zheng, F., Merrill, S.D., Huang, C., Tanaka, D.L., Darboux, F., Liebig, M.A., Halvorson, A.D. 2004. Runoff, erosion, and soil eordibility on crp lands converted to crop and hay production. Soil Science Society of America Journal.v. 68(4): 1332-1341.

Soil Erodibility by Rainfall on Crp Lands Converted to Crop and Hay Production - (Abstract)

Merrill, S.D., Zeng, F., Huang, C., Tanaka, D.L., Darboux, F., Liebig, M.A., Halvorson, A.D. 2004. Soil erodibility by rainfall on crp lands converted to crop and hay production. Meeting Abstract.

Soil Organic Carbon Levels Increase in Texas Trials. - (Peer Reviewed Journal)

Halvorson, A.D., Mosier, A.R., Reule, C.A. 2005. Soil organic carbon levels increase in texas trials. Fluid Journal. Vol. 13(1): 8-11.

Nitrogen Fertilization and Rotation Effects on No-Till Dryland Wheat Production. - (Peer Reviewed Journal)

Halvorson, A.D., Nielsen, D.C., Reule, C.A. 2004. Nitrogen fertilization and rotation effects on no-till dryland wheat production. Agronomy Journal. 96:1196-1201.

Changes in Soil Organic Carbon and Soil Nitrogen under Irrigation in Northern Texas - (Proceedings/Symposium)

Halvorson, A.D., Reule, C.A., Poole, J. 2004. Changes in soil organic carbon and soil nitrogen under irrigation in northern texas. Symposium Proceedings. 21:112-118.

Irrigated Corn Response to Nitrogen Fertilization in the Colorado Arkansas Valley - (Proceedings/Symposium)

Halvorson, A.D., Schwessing, F.C., Bartolo, M., Reule, C.A. 2004. Irrigated corn response to nitrogen fertilization in the colorado arkansas valley. Symposium Proceedings. 10: 157-163.

Satelite Imagery for Small Plot Research and Precision Farming - Nitrogen Relationships in Irrigated Corn - (Proceedings/Symposium)

Cipra, J., Halvorson, A.D. 2004. Satelite imagery for small plot research and precision farming - nitrogen relationships in irrigated corn. Symposium Proceedings. 10: 97-103.

Integrated Assessment of Agroecosystems: Case Studies from the Great Plains and Western Corn Belt - (Abstract)

Liebig, M.A., Varvel, G.E., Tanaka, D.L., Merrill, S.D., Halvorson, A.D. 2004. Integrated assessment of agroecosystems: Case studies from the great plains and western corn belt. Soil and Water Conserv. Society annual meeting. 24-28 July 2004, St. Paul, MN. Abstract

No-Till Crop Production under Sprinkler Irrigation in South Platte Valley - (Proceedings/Symposium)

Halvorson, A.D., Mosier, A.R., Reule, C.A. No-till crop production under sprinkler irrigation in south platte valley. Proceedings of the Annual South Platte Forum. Colorado State University Information Series No. 97, p. 17.

Nitrogen, Tillage, and Irrigated Crop Rotation Effects on Soil Carbon Sequestration - (Abstract)

Halvorson, A.D., Mosier, A.R., Reule, C.A., Bausch, W.C. 2003. Nitrogen, tillage, and irrigated crop rotation effects on soil carbon sequestration. Agronomy Abstracts. CD-ROM Computer Program.

Does Phosphorus Fertilizer Have Value Beyond the Year of Application? - (Abstract)

Halvorson, A.D. 2003. Does phosphorus fertilizer have value beyond the year of application?. Agronomy Abstracts. CD-ROM/Computer Program.

Satellite Imagery for Small Plot Precision Farming Research - Nitrogen Relationships in Irrigated Corn - (Other)

Halvorson, A.D., Cipra, J. 2003. Satellite imagery for small plot precision farming research - nitrogen relationships in irrigated corn. Agronomy Abstracts. CD-ROM/Computer Program.

Measurement and Modeling of Soil-Atmosphere N20, Ch4 and Co2 Exchange for Net Global Warming Potential in Agroecosystems. - (Abstract)

Mosier, A.R., Del Grosso, S., Halvorson, A.D., Parton, W. 2003. Measurement and modeling of soil-atmosphere N20, CH4 and CO2 exchange for net global warming potential in agroecosystems. Agron. Abs. CD-Romm/Computer Program.

Irrigated Crop Management Effects on Productivity, Soil Nitrogen, and Soil Carbon - (Proceedings/Symposium)

Halvorson, A.D., Mosier, A.R., Reule, C.A. 2003. Irrigated crop management effects on productivity, soil nitrogen, and soil carbon. Annual Fertilizer Industry Round Table. CD-ROM/Computer Program.

Irrigated Crop Management Effects on Productivity, Soil Nitrogen, and Soil Carbon - (Proceedings/Symposium)

Halvorson, A.D., Mosier, A.R., Reule, C.A. 2003. Irrigated crop management effects on productivity, soil nitrogen, and soil carbon. Annual Fertilizer Industry Round Table. Winston-Salem, NC. CD-ROM.

Economics Advantage of An Intensive Cropping System Compared to Spring Wheat-Fallow in the Northern Great Plains. (Symposia Proc. Dynamic Cropping Systems: Principles, Processes, and Challenges, Pub. by Usda-Ars, Mandan, Nd) - (Proceedings/Symposium)

Halvorson, A.D., Devuyst, E. 2003. Economics advantage of an intensive cropping system compared to spring wheat-fallow in the northern great plains. (symposia proc.- dynamic cropping systems: principles, processes, and challenges, pub. by usda-ars, mandan, nd). Symposium Proceedings. p. 256-261 and CD-ROM.

Economics of Annual Cropping Versus Crop-Fallow in the Northern Great Plains As Influenced by Tillage and Nitrogen. - (Peer Reviewed Journal)

Devuyst, E.A., Halvorson, A.D. 2004. Economics of annual cropping versus crop-fallow in the northern great plains as influenced by tillage and nitrogen.Agronomy Journal. 96:148-153.

Nitrogen Fertilization of Irrigated Corn Following Alfalfa and Watermelon at Avrc (Arkansas Valley Research CENTER). (WILL Be Published As a Colorado State University Ag. Experiment Station Technical Report) - (Experiment Station)

Halvorson, Ardell, Schweissing, Frank, Reule, Curtis. 2003. Nitrogen fertilization of irrigated corn following alfalfa and watermelon at AVRC. Colorado Agric. Exp. Sta. Technical report TR03-8, Colorado State University. p. 13-18.

Modeling Nitrogen Management Effects on Winter Wheat Production Using Rzwqm and Ceres-Wheat - (Peer Reviewed Journal)

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.

Crop Management Effects on Productivity, Soil Nitrogen, and Soil Carbon - (Proceedings/Symposium)

Halvorson, A.D., Reule, C.A., Poole, J., Follett, R.F. 2003. Crop management effects on productivity, soil nitrogen, and soil carbon. Fluid Fertilizer Foundation Symposium Proceedings. Scottsdale, AZ. 20:102-113.

Nitrogen and Crop Management Influence Irrigated Corn Yields and Greenhouse Gas Emissions - (Proceedings/Symposium)

Halvorson, A.D., Reule, C.A., Mosier, A.R. 2004. Nitrogen and crop management influence irrigated corn yields and greenhouse gas emissions. Symposium Proceedings. 10:21-27.

Carbon As a Potential Commodity: Irrigated Cropland - (Proceedings/Symposium)

Halvorson, A.D. 2002. Carbon as a potential commodity: irrigated cropland. Colorado Chapter of the Soil and Water Conservation Society Proceedings. CD-ROM.

Carbon As a Potential Commodity: Irrigated Cropland - (Proceedings/Symposium)

Halvorson, A.D. 2002. Carbon as a potential commodity: irrigated cropland. Soil and Water Conservation Society Proceedings.

Fertilizer Phosphorus Management Options for No-Till Dryland Winter Wheat - (Popular Publication)

Halvorson, A.D., Havlin, J.L., Reule, C.A. 2002. Fertilizer phosphorus management options for no-till dryland winter wheat. Better Crops. 86(4):4-7.

Tillage System Effects on Nitrogen Requirements for Optimum Corn Yields - (Abstract)

Halvorson, A.D., Bausch, W.C., Duke, H.R., Reule, C.A. 2002. Tillage system effects on nitrogen requirements for optimum corn yields. Agronomy Abstracts. CD-ROM.