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Staff Information Page

Joseph G. Benjamin, Soil Matrix

Central Great Plains Research Station

USDA-Agricultural Research Service, Northern Plains Area

40335 Rd. GG

Akron, CO 80720

Phone: 970-345-0518 / 970-345-2259

FAX: 970-345-2088

E-Mail: Joseph.Benjamin@ars.usda.gov

Education

1989 Ph.D. Soil Physics, Iowa State University

1984 M.S. Soil Management, Iowa State University     

1977 B.S. Agronomy, Iowa State University

 

Professional Experience

1982-1985 Teaching Assistant, Iowa State University
1985-1991 Research Associate, Iowa State University
1991-1996 Soil Scientist, Great Plains Systems Research Unit, USDA-ARS
1996-present Soil Scientist, Central Great Plains Research Unit, USDA-ARS      

 

Research Interests

Soil management effects on the soil environment for crop production

Modification of soil physical properties by tillage

Modeling tillage-induced changes in soil properties on plant production

Alleviation of compaction by tillage

 

Recent Publications

Pikul, J.L. Jr, Schwartz R., Benjamin, J.G., Baumhardt L., and Merrill S. Soil physical characteristics of contrasting cropping systems in the Great Plains: Preliminary Findings. In J.D. Hanson and J.M. Krupinsky (eds.), Proceedings from the Dynamic Cropping Systems: Principles, Processes, and Challenges, Aug. 4-7, Bismarck, North Dakota. 2003 p. 205-209.

 

 

Benjamin, J.G., D.C. Nielsen, M.F. Vigil. 2003. Quantifying effects of soil conditions on plant growth and crop production.  Geoderma v. 116p. 137-148.

 

Ma, L., Nielsen, D.C., L.R. Ahuja, R.W. Malone, Saseendran S.A., K.W. Rojas, J.D. Hanson, J.G. Benjamin. 2003. Evaluation of RZWQM under varying irrigation levels in eastern Colorado. Transactions of the ASAE 49(1): 39-49.

 

Benjamin, J.G., and D.C. Nielsen. A method to separate plant roots from soil and analyze root surface area. Agron. Abst. CD-ROM. 2002.

Nielsen, D., J. Benjamin, and J. Schneekloth. 2002. Corn water use and yield under dryland rotations and limited irrigation. In. J. Davis (ed.) From the Ground Up, Agronomy News 22:3-4. Colorado State University Cooperative Extension, Ft. Collins.

Vigil M.F. and J.G. Benjamin. 2002. Nitrogen response of sunflowers in a no-till dryland rotation. Agron. Abstracts Nov 10-14 Indianapolis IA.

Benjamin, J.G., D.C. Nielsen, M.F. Vigil, and R.A. Bowman. 2001. Quantifying effects of soil physical condition on plant growth and crop production. In Annual Meeting Abstracts, [CD-ROM]. ASA, CSSA, SSSA, Madison, WI.

Huanxiang Ruan, L.R. Ahuja, T.R. Green, and J.G. Benjamin. 2001. Residue cover and surface_sealing effects on infiltration: numerical simulations for field applications. Soil Sci. Soc. Am. J. 65:853_861.

Nielsen, D.C., M.F. Vigil, J.G. Benjamin, R.A. Bowman, R.L. Anderson, A.D. Halvorson. 2001. Crop rotation effect on water content at wheat planting and wheat yield. In Annual Meeting Abstracts, [CD-ROM]. ASA, CSSA, SSSA, Madison, WI.

Vigil, M.F., J.G. Benjamin, and J.S. Schepers. 2001. Yield response and fertilizer recovery by dryland sunflowers in a no-till rotation. In Proceedings of the 23^rd Sunflower Research Workshop. January 17-18th, Fargo North Dakota 23:90-94.

Benjamin, J.G., D.C.Nielsen, M.F. Vigil, R.A. Bowman, R.L. Anderson. 2000. Dryland crop rotation effects on the least limiting water range in eastern Colorado. Agron. Abstr. Pp.314 Agron. National meeting, Minneapolis, Minn.

Vigil, M.F., J.G. Benjamin. 2000. Recovery of deep placed 15N by sunflowers. Agron. Abstr. Pp.277 Am. Soc. Agron. National meeting, Minneapolis, Minn.

 

Butters, G.L., J.G. Benjamin, L.R. Ahuja, and H. Ruan. 2000. Bromide and atrazine leaching in furrow- and sprinkler-irrigated corn. Soil Sci. Soc. Am. J. 64:1723-1732.

 

Benjamin, J.G. L.K. Porter, H.R. Duke, L.R. Ahuja, and G. Butters. 1998. Nitrogen movement with furrow irrigation method and fertilizer band placement. Soil Sci. Soc. Am. J. 62(4) 1103-1108.

 

Benjamin, J.G., L.K. Porter, H.R. Duke and L.R. Ahuja. 1997. Corn growth and nitrogen uptake with furrow irrigation and fertilizer bands. Agron. J. 89:609-612.

 

Benjamin, J. G., L. K. Porter, H. R. Duke, L. R. Ahuja, and G. Butters. 1997. Nitrogen Leaching with Furrow Irrigation and Fertilizer Bands. Soil Sci. Soc. Am. J.

 

Benjamin, J. G., L. R. Ahuja, and R. R. Allmaras. 1996. Modelling corn rooting patterns and their effects on water uptake and nitrate leaching. Plant and Soil 179:223-232.

 

Benjamin, J. G., H. R. Havis, C. V. Alonso, and L. R. Ahuja. 1994. Leaching and water flow patterns in every-furrow and alternate-furrow irrigation. Soil Sci. Soc. Am. J. 58:1511-1517.

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Last edited: Wednesday April 14, 2004