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United States Department of Agriculture

Agricultural Research Service

Brett L. Allen

Research Agronomist

 

Brett L. AllenBrett L. Allen

 

Phone: 406.433.9402
Fax: 406.433.5038
   

 

 EducationCurrent ResearchResearch ExperiencePublications • 

 

 

 

 

   

 

Additional Pages: Research Projects,* Publications*

*Taken from the Agricultural Research Information System (ARIS) database.

 

 

 

 

EDUCATION

B.S. Agronomy

1998

Brigham Young University,
Provo, UT

M.S. Soil Science

2000

Brigham Young University,
Provo, UT

Ph.D. Soil Science
& Water Resources

2004

Iowa State University,
Ames, IA

 

  

 

CURRENT RESEARCH

 

Brett joined NPARL in March 2007 and serves as a research agronomist for dryland cropping systems.  Working collaboratively with other scientists, his research program focuses on diversified dryland cropping systems that enhance soil and water quality, conserve natural resources, reduce dependence on agrochemicals, and maintain sustainable economic returns to producers.

 

RESEARCH EXPERIENCE

Before joining the USDA-ARS, Brett worked as a post-doctoral research associate at Iowa State University.  He made important contributions to better understand manure management impacts on crop growth and on environmental soil and surface water quality in corn-soybean cropping systems that currently predominate in the Midwest.  Much of this research employed the use of an outdoor rainfall simulation technique that induced runoff following various rates, timing, and incorporation of manure from swine (liquid), poultry, or beef.  

 

Brett’s Ph.D. work at Iowa State focused on alternatives to improve agronomic and environmental phosphorus management following application of fertilizer or manure.  A portion of the work from Brett’s post-doc and doctoral research programs is being used to validate the Iowa Phosphorus Index, which is a voluntary assessment tool for the purpose of evaluating the potential of off site phosphorus movement under various management practices.  During this period of time, Brett also conducted collaborative research with federal and state agencies on the row crop component of the National Phosphorus Runoff Project, which is a multi-state effort to improve water quality by quantifying relationships between phosphorus levels in surface runoff and those in soil. 

 

While working on his M.S. degree at Brigham Young University, Brett was presented with the opportunity to collaborate with researchers at the USDA-ARS facility in Kimberly, ID, where he investigated mechanisms of nutrient uptake in sweet corn and dry bean as affected by previous cropping to wheat or fallow on exposed subsoil amended with dairy manure.

  

SELECTED PUBLICATIONS 

Please note: The most recent publications by this scientist may not yet be listed here. Please check the ARIS "Publications" page for possible new titles.

  • 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. 

  • Allen, B.L., Mallarino, A.P., Lore, J.F., Baker, J.L., Haq, M.U. 2012. Phosphorus lateral movement through subsoil to subsurface tile drains. Soil Science Society of America Journal. 76(2):710-717. 

  • Hansen, N.C., Allen, B.L., Baumhardt, R.L., Lyon, D.J. 2012. Research achievements and adoption of no-till, dryland cropping in the semi-arid US Great Plains. Field Crops Research. 132:196-203.

  • 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. 

  • Sainju, U.M., Lenssen, A.W., Caesar, T., Jabro, J.D., Lartey, R.T., Evans, R.G., Allen, B.L. 2012. Dryland soil nitrogen cycling influenced by tillage, crop rotation, and cultural practice. Nutrient Cycling in Agroecosystems. 93(3):309-322. 

  • Sainju, U.M., Lenssen, A.W., Caesar, T., Jabro, J.D., Lartey, R.T., Evans, R.G., Allen, B.L. 2012. Tillage, crop rotation, and cultural practice effects on dryland soil carbon fractions. Open Journal of Soil Science. 2(3):242-255.

  • Allen, B.L., Cochran, V.L., Caesar, T., Tanaka, D.L. 2011. Long-term Effects of Topsoil Removal on Soil Productivity Factors, Wheat Yield and Protein Content. Archives of Agronomy and Soil Science. 57(3):293-303. (PDF; 277KB)

  • Allen, B.L., Pikul Jr, J.L., Cochran, V.L., Waddell, J.T. 2011. Long-term Lentil Green-manure Replacement for Fallow in the Semiarid Northern Great Plains. Agronomy Journal. 103:1292-1298. (PDF; 549 KB)

  • Sainju, U.M., Lenssen, A.W., Caesar, T., Jabro, J.D., Lartey, R.T., Evans, R.G., Allen, B.L. 2011. Dryland residue and soil orgranic matter as influenced by tillage, crop rotation, and cultural practice. Plant and Soil Journal. 338:27-41. (PDF, 213 KB)

  • Kaiser, D.E., Mallarino, A.P., Haq, M.U., Allen, B.L. 2009. Runoff Phosphorus Loss Immediately after Poultry Manure Application as Influenced by the Application Rate and Tillage. Journal of Environmental Quality. 38: 299-308. (PDF; 804 KB)

  • Allen, B.L., Mallarino, A.P. 2008. Effect of liquid swine manure rate, incorporation, and timing of simulated rainfall on phosphorus loss with surface runoff. Journal of Environmental Quality. 37:125-137.

  • Allen, B.L. and A.P. Mallarino. 2006. Relationships between extractable soil phosphorus and phosphorus saturation after long-term fertilizer and manure application. Soil Sci. Soc. Am. J. 70:454-463.

  • Allen, B.L., A.P. Mallarino, and M.U. Haq. 2006. Relationship between soil and runoff phosphorus for three typical Iowa soils. In 2006 Agriculture and the Environment Conference Proceedings. Ames, IA.

  • Haq, M.U., A.P. Mallarino, and B.L. Allen. 2006. Runoff Phosphorus Loss Immediately After Surface Application of Fertilizer and Swine, Poultry, or Beef Manure. Agron. Abs. CD-ROM. ASA-CSSA-SSSA, Madison, WI.

  • Allen, B.L., A.P. Mallarino, J.G. Klatt, J.L. Baker, and M. Camara. 2006. Soil and surface Runoff Phosphorus Relationships For Five Typical USA Midwest Soils. J. Environ. Qual. 35:599-610.

  • Mallarino, A.P., J.E. Sawyer, D.E. Kaiser, D. Ruiz-Diaz, D. Barker, D. Wittry, and B.L. Allen.  2006.  Agronomic and environmentally sound utilization of nutrients in poultry manure: overview of an ongoing project.  In 2006 Agriculture and the Environment Conference Proceedings. Ames, IA.

  • Allen, B.L., A.P. Mallarino, and J.L. Baker. 2005. Evaluation of phosphorus loss through tile drainage. In 2005 Agriculture and the Environment Conference Proceedings. Ames, IA.

  • Allen, B.L., A.P. Mallarino and M.U. Haq. 2005. Relationship between Soil and Runoff Phosphorus for Three Typical Iowa Soils: a Component of the National Phosphorus Runoff Project. Agron. Abs. CD-ROM. ASA-CSSA-SSSA, Madison, WI.

  • Mallarino, A.P., B.L. Allen, and M.U. Haq. 2005. Manure management impacts on phosphorus loss with surface runoff and on-farm phosphorus index implementation. An overview of ongoing research. In Agriculture and the Environment Conf. Proceedings [CD-ROM]. March 8-9, 2005. Iowa State Univ. Extension, Ames, IA.

  • Haq, M.U., A.P. Mallarino, and B.L. Allen. 2004. Runoff phosphorus loss as affected by tillage and swine manure management in corn-soybean production systems. Agron. Abs. CD-ROM. ASA-CSSA-SSSA, Madison, WI.

  • Allen, B.L., A.P. Mallarino, J.L. Baker, and J.F. Lore. 2004. Lateral phosphorus movement through subsoil to tile drains. Agron. Abs. CD-ROM. ASA-CSSA-SSSA, Madison, WI.

  • Allen, B.L., A.P. Mallarino, J.L. Baker, J.G. Klatt, M.U. Haq, and C.H. Pedersen. 2003.  Swine manure rate and tillage effects on phosphorus loss with surface runoff. Agron. Abs. CD-ROM. ASA-CSSA-SSSA, Madison, WI.

  • Haq, M.U., A.P. Mallarino, J.G. Klatt, J.C. Lorimor, R.S. Kanwar, C.H. Pedersen, and B.L. Allen.  2003. Impact of poultry manure application on phosphorus loss with surface runoff and tile drainage. Agron. Abs. CD-ROM. ASA-CSSA-SSSA, Madison, WI.

  • Klatt, J.G., A.P. Mallarino, and B.L. Allen. 2002. Relationships between soil phosphorus and phosphorus in surface runoff and subsurface drainage. An overview of ongoing research. p. 183-189. In North-Central Extension-Industry Soil Fertility Conf. Proceedings. Vol. 18. Des Moines, IA.

  • Allen, B.L., V.D. Jolley, C.W. Robbins, and L.L. Freeborn. 2001. Fallow versus wheat cropping of unamended and manure-amended soils related to mycorrhizal colonization, yield, and plant nutrition of dry bean and sweet corn. J. Plant Nutr. 24:921-944.

 


Last Modified: 4/19/2013
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