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United States Department of Agriculture

Agricultural Research Service

William M. Iversen (Bill)

Physical Scientist


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Crop diversification, tillage, and management system influences on spring wheat yield and soil water use Reprint Icon - (Peer Reviewed Journal)
Lenssen, A.W., Sainju, U.M., Jabro, J.D., Iversen, W.M., Allen, B.L., Evans, R.G. 2014. Crop diversification, tillage, and management system influences on spring wheat yield and soil water use. Agronomy Journal. doi:10.2134/agronj14.0119. 106(4): 1445–1454.
Repeated freeze-thaw cycle effects on soil compaction in a clay loam in northeastern Montana - (Peer Reviewed Journal)
Jabro, J.D., Iversen, W.M., Evans, R.G., Allen, B.L., Stevens, W.B. 2014. Repeated freeze-thaw cycle effects on soil compaction in a clay loam in northeastern Montana. Soil Science Society of America Journal. doi:10.2136/sssaj2013.07.0280. 78(3): 737-744.
Irrigation system and tillage effects on soil carbon and nitrogen fractions Reprint Icon - (Peer Reviewed Journal)
Sainju, U.M., Stevens, W.B., Evans, R.G., Iversen, W.M. 2013. Irrigation system and tillage effects on soil carbon and nitrogen fractions. Soil Science Society of America Journal. 77(4): 1225-1234.
Simulating dryland water availability and spring wheat production under various management practices in the Northern Great Plains - (Peer Reviewed Journal)
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.
Water use and water productivity of sugarbeet, malt barley and potato as affected by irrigation frequency Reprint Icon - (Peer Reviewed Journal)
Jabro, J.D., Iversen, W.M., Evans, R.G., Stevens, W.B. 2012. Water use and water productivity of sugarbeet, malt barley and potato as affected by irrigation frequency. Agronomy Journal. 104(6):1510-1516.
Crop yield and quality, weeds, insects, and water use of durum and selected brassicaceae oilseeds in two-year rotations Reprint Icon - (Peer Reviewed Journal)
Lenssen, A.W., Iversen, W.M., Sainju, U.M., Caesar, T., Blodgett, S.L., Allen, B.L., Evans, R.G. 2012. Crop yield and quality, weeds, insects, and water use of durum and selected brassicaceae oilseeds in two-year rotations. Agronomy Journal. 104:1295-1304.
Freeze-thaw cycles effects on soil compaction in a clay loam - (Abstract Only)
Jabro, J.D., Iversen, W.M., Evans, R.G. 2012. Freeze-thaw cycles effects on soil compaction in a clay loam. Geophysical Research Abstracts. Vol. 14, EGU2012-1688.
Performance evaluation and accuracy of passive capillary samplers (PCAPs) for estimating real-time drainage water fluxes Reprint Icon - (Peer Reviewed Journal)
Jabro, J.D., Iversen, W.M., Evans, R.G. 2012. Performance evaluation and accuracy of passive capillary samplers (PCAPs)for estimating real-time drainage water fluxes. Applied Engineering in Agriculture. 18(4):537-542.
Bulk density, water content and hydraulic properties of a sandy loam soil following conventional or strip tillage Reprint Icon - (Peer Reviewed Journal)
Jabro, J.D., Stevens, W.B., Iversen, W.M., Evans, R.G. 2011. Bulk density, water content and hydraulic properties of a sandy loam soil following conventional or strip tillage. Applied Engineering in Agriculture. 27(5):765-768.
Sugarbeet productivity as influenced by fertilizer band depth and nitrogen rate in strip tillage Reprint Icon - (Peer Reviewed Journal)
Stevens, W.B., Evans, R.G., Jabro, J.D., Iversen, W.M. 2011. Sugarbeet productivity as influenced by fertilizer band depth and nitrogen rate in strip tillage. Journal of Sugarbeet Research. 137-154.
Integrated decision support, sensor networks and adaptive control for wireless site-specific sprinkler irrigation Reprint Icon - (Peer Reviewed Journal)
Evans, R.G., Iversen, W.M., Kim, Y. 2012. Integrated decision support, sensor networks and adaptive control for wireless site-specific sprinkler irrigation. Applied Engineering in Agriculture. 28(3):377-387.
Efficacy of passive capillary samplers for estimating soil water drainage in the vadose zone - (Abstract Only)
Jabro, Jay, Robert Evans, and William Iversen. 2011. Efficacy of Passive Capillary Samplers for Estimating Soil Water Drainage in the Vadose Zone. Geophysical Research Abstracts Vol. 13, EGU2011-2635-6, 2011 EGU General Assembly 2011.
Integrated Decision Support, Sensor Networks and Adaptive Control for Wireless Site-specific Sprinkler Irrigation - (Proceedings)
Evans, R.G., Iversen, W.M., Kim, Y. 2010. Integrated Decision Support, Sensor Networks and Adaptive Control for Wireless Site-specific Sprinkler Irrigation. National Irrigation Symposium. Phoenix, AZ. Dec 5-8. ASABE CDROM.
Tillage effects on soil physical properties, sugarbeet yield and quality - (Abstract Only) - (23-Aug-10)
Nitrogen Availability for Sugarbeet affected by Tillage System and Sprinkler Irrigation Method Reprint Icon - (Peer Reviewed Journal)
Stevens, W.B., Evans, R.G., Jabro, J.D., Iversen, W.M. 2010. Nitrogen Availability for Sugarbeet affected by Tillage System and Sprinkler Irrigation Method. Agronomy Journal. 102:1745-1752.
Fall application of polymer-coated urea in strip-till sugarbeet - (Abstract Only) - (11-May-10)
Development of Combined Site-Specific MESA and LEPA Methods on a Linear Move Sprinkler Irrigation System Reprint Icon - (Peer Reviewed Journal)
Evans, R.G., Iversen, W.M., Stevens, W.B., Jabro, J.D. 2010. Development of Combined Site-Specific MESA and LEPA Methods on a Linear Move Sprinkler Irrigation System. Applied Engineering in Agriculture. 26(5):883-895.
Spatial and Temporal Variations of Soil Penetration Resistance across Rows of Sugarbeet under Two Tillage Systems - (Abstract Only)
Jabro, J.D., Stevens, W.B., Evans, R.G., Iversen, W.M. 2010. Spatial and Temporal Variations of Soil Penetration Resistance across Rows of Sugarbeet under Two Tillage Systems. In: Geophysical Research Abstracts, Vol. 12, EGU2010-1206. 2010 EGU General Assembly, May 2-5, Vienna, Austria. Cd-Rom.
Spatial Variability and Correlation of Selected Soil Properties in the AP Horizon of the CRP Grassland Reprint Icon - (Peer Reviewed Journal)
Jabro, J.D., Stevens, W.B., Evans, R.G., Iversen, W.M. 2010. Spatial Variability and Correlation of Selected Soil Properties in the AP Horizon of the CRP Grassland. Applied Engineering in Agriculture. 26(3):419-428.
Tillage Effects on Bulk Density and Hydraulic Properties of a Sandy Loam Soil in the Mon-Dak Region, USA - (Proceedings)
Jabro, J.D., Stevens, W.B., Iversen, W.M., Evans, R.G. 2010. Tillage Effects on Bulk Density and Hydraulic Properties of a Sandy Loam Soil in the Mon-Dak Region, USA. [CD ROM]. Proceedings of the 19th Congress of Soil Science.
Development of Strip Tillage on Sprinkler Irrigated Sugarbeet Reprint Icon - (Peer Reviewed Journal)
Evans, R.G., Stevens, W.B., Iversen, W.M. 2010. Development of Strip Tillage on Sprinkler Irrigated Sugarbeet. Applied Engineering in Agriculture. 26(1): 59-69.
New Method for the Characterization of 3D Preferential Flow Paths at the Field Reprint Icon - (Peer Reviewed Journal)
Abou-Najm, M., Jabro, J.D., Iversen, W.M., Mohtar, R., Evans, R.G. 2010. New Method for the Characterization of 3D Preferential Flow Paths at the Field. Water Resources Research. VOL. 46, W02503, doi:10.1029/2009WR008594.
Tillage effects on physical properties in two soils of the Northern Great Plains Reprint Icon - (Peer Reviewed Journal)
Jabro, J.D., Stevens, W.B., Evans, R.G., Iversen, W.M. 2009. Tillage effects on physical properties in two soils of the Northern Great Plains. Applied Engineering in Agriculture. 24(3): 377-382.
A remote irrigation monitoring and control system (RIMCS) for Continuous Move Systems. Part B: Field Testing and Results. Reprint Icon - (Peer Reviewed Journal)
Chavez Eguez, J.L., Pierce, F.J., Elliott, T.V., Evans, R.G., Kim, Y., Iversen, W.M. 2010. A remote irrigation monitoring and control system (RIMCS) for Continuous Move Systems. Part B: Field Testing and Results. Precision Agriculture. 11(1):11-26.
Where does Strip Tillage Fit in Montana and Wyoming Sugarbeet Production - (Abstract Only)
Stevens, W.B., Evans, R.G., Iversen, W.M. 2009. Where does Strip Tillage Fit in Montana and Wyoming Sugarbeet Production [Abstract]. 36-40.
Where does Strip Tillage Fit in Montana Irrigated Crops - (Abstract Only)
Stevens, W.B., Evans, R.G., Iversen, W.M. 2009. Where does Strip Tillage Fit in Montana Irrigated Crops [Abstract]. 21-23.
Tillage depth effects on soil physical properties, sugarbeet yield and quality Reprint Icon - (Peer Reviewed Journal)
Jabro, J.D., Stevens, W.B., Iversen, W.M., Evans, R.G. 2010. Tillage depth effects on soil physical properties, sugarbeet yield and quality. Communications in Soil Science and Plant Analysis. 41: 7:908 -916.
Performance Evaluation of Automated Passive Capillary Sampler for Estimating Water Drainage in the Vadose Zone - (Abstract Only)
Jabro, J.D., R.G. Evans, W.M. Iversen and, B.W. Stevens. 2009. Performance Evaluation of Automated Passive Capillary Sampler for Estimating Water Drainage in the Vadose Zone. Annual International Meeting of the American Society of Agricultural and Biological Engineers (ASABE) Reno, NV, June 20-24, 2009. Cd-Rom.
New Methodology for 3D Visualization and Modeling of the Cracking Behavior of SOil at the Field Scale - (Abstract Only)
Abou Najm, M.R., R.H. Mohtar, J.D. Jabro, W.M. Iversen, J.B. Jesiek, and E. Sanders. 2009. New Methodology for 3D visualization and Modeling of the Cracking Behavior of Soil at the Field Scale. Annual International Meeting of the American Society of Agricultural and Biological Engineers (ASABE) Reno, NV, June 20-24, 2009. Cd-Rom.
Evaluation of closed-loop site-specific irrigation with wireless sensor network Reprint Icon - (Peer Reviewed Journal)
Kim, Y., Evans, R.G., Iversen, W.M. 2009. Evaluation of closed-loop site-specific irrigation with wireless sensor network. Journal of Irrigation and Drainage Engineering. 135(1): 25-31.
Estimating in situ soil-water retention and field water capacity measurements in two contrasting soil textures Reprint Icon - (Peer Reviewed Journal)
Jabro, J.D., Evans, R.G., Kim, Y., Iversen, W.M. 2009. Estimating in situ soil-water retention and field water capacity measurements in two contrasting soil textures. Irrigation Science. 27:223-229.
Estimating In-situ Soil-Water Retention and Field Water Capacity in Two Contrasting Soil Textures - (Abstract Only)
Jabro, J.D., Evans, R.G., Kim, Y., Iversen, W.M. 2008. Estimating In-situ Soil-Water Retention and Field Water Capacity in Two Contrasting Soil Textures. American Society of Agricultural and Biological Engineers. Paper No. 083753.
Tillage and irrigation method effects on yield and quality of sugarbeet and malting barley - (Abstract Only)
Stevens, W.B., Evans, R.G., Jabro, J.D., Iversen, W.M. 2008. Tillage and irrigation method effects on yield and quality of sugarbeet and malting barley. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting.
Towards a better understanding of the cracking behavior in soils - (Abstract Only) - (12-May-08)
Passive capillary sampler for measuring soil water drainage and flux in the vadose zone: Design, performance and enhancement Reprint Icon - (Peer Reviewed Journal)
Jabro, J.D., Kim, Y., Evans, R.G., Iversen, W.M., Stevens, W.B. 2008. Passive capillary sampler for measuring soil water drainage and flux in the vadose zone: Design, performance and enhancement. Applied Engineering in Agriculture. 24(4):439-446.
Tillage depth effects on soil physical properties, sugarbeet yield and quality - (Abstract Only)
Jabro, J.D., Stevens, W.B., Iversen, W.M., Evans, R.G. 2008. Tillage depth effects on soil physical properties, sugarbeet yield and quality. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. October 4-9, 2008, Houston, TX. Cd-Rom.
In-situ field capacity and soil water retention measurements in two contrasting soil textures - (Proceedings)
Jabro, J.D., Evans, R.G., Kim, Y., Iversen, W.M. 2008. In-situ field capacity and soil water retention measurements in two contrasting soil textures. Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE). June 29 - July 2, 2008. Providence, Rhode Island.
In-situ Field Capacity and Soil Water Retention Measurements in Two Contrasting Soil Textures - (Abstract Only)
Jabro, J.D., Evans, R.G., Kim, Y., Iversen, W.M. 2008. In-situ Field Capacity and Soil Water Retention Measurements in Two Contrasting Soil Textures. Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE). June 29-July 2, 2008. Providence, Rhode Island.
Strip tillage for sugarbeet and its implications for N fertilizer management - (Proceedings)
Stevens, W.B., Iversen, W.M., Evans, R.G., Jabro, J.D., Kim, Y. 2008. Strip tillage for sugarbeet and its implications for N fertilizer management. Proceedings of Great Plains Soil Fertility Conference. 12:54-60.
Effect of Tillage on Soil Hydraulic Conductivity in Two Contrasting Soil Textures - (Abstract Only)
Jabro, J.D., Stevens, W.B., Evans, R.G., Iversen, W.M. 2007. Effect of Tillage on Soil Hydraulic Conductivity in Two Contrasting Soil Textures. Agronomy Abstracts. In: Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting, November 4-9, 2007, New Orleans, Louisianna. CD-ROM.
Repeatability of Soil Apparent Electrical Conductivity Measured by a Coulter Sensor Reprint Icon - (Peer Reviewed Journal)
Jabro, J.D., Evans, R.G., Stevens, W.B., Iversen, W.M. 2008. Repeatability of soil apparent electrical conductivity measured by a coulter sensor. Soil Science. 173(1):35-45.
In-season movement of fertilizer nitrogen in conventional and strip till sugarbeet systems - (Abstract Only)
Stevens, W.B., Jabro, J.D., Evans, R.G., Iversen, W.M. 2007. In-season movement of fertilizer nitrogen in conventional and strip till sugarbeet systems. American Society of Agronomy Meetings.
Remote sensing and control of irrigation system using a distributed wireless sensor network Reprint Icon - (Peer Reviewed Journal)
Kim, Y., Evans, R.G., Iversen, W.M. 2008. Remote sensing and control of irrigation system using a distributed wireless sensor network. IEEE Transactions on Instrumentation and Measurement.57(7):1379-1387.
Water flux and drainage from soil measured with automated passive capillary wick samplers - (Proceedings)
Jabro, J.D., Kim, Y., Evans, R.G., Iversen, W.M. 2007. Water flux and drainage from soil measured with automated passive capillary wick samplers [CD-ROM]. ASABE Annual International Meeting, June 17-20, 2007. Minneapolis, Minnesota. Paper No. 072019.
Survey of field soils for cercospora beticola by PCR and ELISA Reprint Icon - (Proceedings)
Lartey, R.T., Caesar, T., Iversen, W.M., Hanson, S.L., Evans, R.G. 2007. Survey of field soils for cercospora beticola by PCR and ELISA. In: Proceedings of the 34th Biennial Meeting of the American Society of Sugarbeet Technologists, February 28-Mark 3, 2007, Salt Lake City, Utah. 34: 164-168.
Detection of cercospora beticola by PCR in amended and naturally infested field soil Reprint Icon - (Proceedings)
Lartey, R.T., Caesar, T., Hanson, S.L., Iversen, W.M., Evans, R.G. 2007. Detection of cercospora beticola by PCR in amended and naturally infested field soil. In: Proceedings of the 34th Biennial Meeting of the American Society of Sugarbeet Technologists, February 28-Mark 3, 2007, Salt Lake City, Utah. 34: 211-216.
Wireless Site-specific Irrigation - The Future of Intelligent Agriculture - (Popular Publication)
Kim, Y., Evans, R.G., Iversen, W.M. 2007. Wireless Site-specific Irrigation - The Future of Intelligent Agriculture. Resource Magazine. October, Special Issue, 14:(7):2-3.
Two irrigation methods on strip-tilled and conventionally tilled sugarbeets and barley - (Popular Publication)
Stevens, W.B., Evans, R.G., Iversen, W.M. 2007. Two irrigation methods on strip-tilled and conventionally tilled sugarbeets and barley. The Sugarbeet Grower. 46(2):4-6.
Survey of Field Soils for Cercospora beticola by PCR and ELISA - (Abstract Only)
Lartey, R.T., Caesar, T., Iversen, W.M., Hanson, S.L., Evans, R.G. Survey of Field Soils for Cercospora beticola by PCR and ELISA. American Society of Sugar Beet Technologists, February 28-March 3, 2007, Salt Lake City, Utah. p. 29.
Detection of Cercospora beticola by PCR in Amended and Naturally Infested Field Soil - (Abstract Only)
Lartey, R.T., Caesar, T., Hanson, S.L., Iversen, W.M., Evans, R.G. 2006. Detection of Cercospora beticola by PCR in Amended and Naturally Infested Field Soil. American Society of Sugar Beet Technologists, February 28-March 3, 2007, Salt Lake City, Utah. p. 37.
Nitrogen Uptake and Utilization by Strip-Till Sugarbeet - (Abstract Only)
Stevens, W.B., Evans, R.G., Iversen, W.M., Jabro, J.D. 2006. Nitrogen Uptake and Utilization by Strip-Till Sugarbeet. In: ASA-CSSA-SSSA Annual Meeting Abstracts, November 12-16, 2006, Indianapolis, IN. Poster.
Strip Tillage on Sprinkler Irrigated Sugar Beets - (Proceedings)
Evans, R.G., Iversen, W.M., Stevens, W.B. 2006. Strip tillage on sprinkler irrigated sugar beets. ASABE Annual International Meeting. Paper 061030. CD-ROM.
Software Design for Wireless in-Field Sensor-Based Irrigation Management - (Proceedings)
Kim, Y., Evans, R.G., Iversen, W.M., Chavez, J.L., Pierce, F.J. 2006. Software design for wireless in-field sensor-based irrigation management. ASABE Annual International Meeting. Paper 063074. CD-ROM.
Repeatability of Soil Apparent Electrical Conductivity Measured by the Veris 3100 Sensor - (Proceedings)
Jabro, J.D., Evans, R.G., Stevens, W.B., Iversen, W.M. 2006. Repeatability of soil apparent electrical conductivity measured by the Veris 3100 Sensor. ASABE Annual International Meeting, July 9-12, 2006. Portland, Oregon. 2006 CD-ROM.
Instrumentation and Control for Wireless Sensor Network for Automated Irrigation - (Proceedings) - (12-May-06)
Web-Based Real-Time Monitoring of Lysimeter Using Wireless Sensor Network - (Abstract Only)
Kim, Y., Jabro, J.D., Iversen, W.M., Evans, R.G. 2006. Web-based real-time monitoring of lysimeter using wireless sensor network. ASA-CSSA-SSSA International Annual Meetings. Paper No. 27304.
Characterization of Spatial Variability of Soil Electrical Conductivity and Cone Index Using Coulter and Penetrometer-Type Sensors. Reprint Icon - (Peer Reviewed Journal)
Jabro, J.D., Evans, R.G., Kim, Y., Stevens, W.B., Iversen, W.M. 2006. Characterization of spatial variability of soil electrical conductivity and cone index using coulter and penetrometer-type sensors. Soil Science. 171(8):627-637.
Irrigation System Effects on Soil Carbon and Nitrogen under Sugarbeet and Barley in Northern Great Plains - (Proceedings)
Sainju, U.M., Evans, R.G., Iversen, W.M. 2006. Irrigation system effects on soil carbon and nitrogen under sugarbeet and barley in northern great plains. Proceedings of Great Plains Soil Fertility Conference. Proceedings of the Great Plains Soil Fertility Conference, March 7-8, 2006, Denver, Colorado. p. 286-291.
Strip-Till Research on Beets - (Popular Publication)
Evans, R.G., Iversen, W.M., Stevens, W.B. 2006. Strip-till research on beets. The Sugarbeet Grower. 45(2):16-19.
Combined Lepa and Mesa Irrigation on a Site Specific Linear Move System - (Proceedings)
Evans, R.G., Stevens, W.B., Iversen, W.M. 2005. Combined lepa and mesa irrigation on a site specific linear move system. In: Proceedings of the 26th International Irrigation Show. International Irrigation Show, November 6-8, 2005. Phoenix, Arizona. 13 pp. 2005 CDROM.
Spatial Variability of the Apparent Electrical Conductivity and Cone Index As Measured with Sensing Technologies: Assessment and Comparison - (Proceedings)
Jabro, J.D., Evans, R.G., Kim, Y., Stevens, W.B., Iversen, W.M. 2005. Spatial variability of the apparent electrical conductivity and cone index as measured with sensing technologies: assessment and comparison. ASABE Pacific Northwest Section Meeting, Lethbridge, Alberta, Canada, September 22-24, 2005. Paper PNW05-1017.
Last Modified: 4/19/2013