• Anex, R.P., L.R. Lynd, M.S. Laser, A.H. Heggenstaller, and M. Liebman. 2007. Potential for Enhanced Nutrient Cycling through Coupling of Agricultural and Bioenergy Systems. Crop Sci 47:1327-1335 10.2135/cropsci2006.06.0406.

• Clapp, C.E., R.R. Allmaras, M.F. Layese, D.L. Linden, and R.H. Dowdy. 2000. Soil organic carbon and 13C abundance as related to tillage, crop residue, and nitrogen fertilization under continuous corn management in Minnesota. Soil and Tillage Research 55:127-142. 

• Farrell, A.E., R.J. Plevin, B.T. Turner, A.D. Jones, M. O'Hare, and D.M. Kammen. 2006. Ethanol Can Contribute to Energy and Environmental Goals. Science 311:506-508 10.1126/science.1121416.

• Gollany, H. T., J.A.E. Molina, C.E. Clapp, R.R. Allmaras,  M.F. Layese, J.M. Baker, and H.H. Cheng. 2004. Nitrogen Leaching and Denitrification in Continuous Corn as Related to Residue Management. Environmental Management, Vol. 33, Supplement 1, pp. S289-S298.

• Hammerschlag, R. 2006. Ethanol's Energy Return on Investment:  A Survey of the Literature 1990-Present. Environ. Sci. Technol. 40:1744-1750.

• Linden, D.L., C.E. Clapp, and R.H. Dowdy. 2000. Long-term corn grain and stover yields as a function of tillage and residue removal in east central Minnesota. Soil and Tillage Research 56:167-174.

• Long, S.P., X.-G. Zhu, S.L. Naidu, and D.R. Ort. 2006. Can improvement in photosynthesis increase crop yields? Plant, Cell and Environment 29:315-330.

• Maskina, M.S., J.F. Power, J.W. Doran, and W.W. Wilhelm. 1993. Residual effects on no-till crop residues on corn yield and nitrogen uptake. Soil Science Society of America Journal 57:1555-1560.

• Solomon, B.D., J.R. Barnes, and K.E. Halvorsen. 2007. Grain and cellulosic ethanol: History, economics, and energy policy. Biomass and Bioenergy 31:416-425.

• Wilhelm, W.W., J.W. Doran, and J.F. Power. 1986. Corn and soybean yield response to crop residue management under no-tillage production systems. Agronomy Journal 78:184-189.

REAP Presentations

• Biomass Production and Soil Carbon, Jane M-F Johnson,  Soil Quality: the Foundation for Natural Resource Conservation, Soil and Water Conservation Society, 2007 Annual Conference, Tampa Florida, July 25, 2007.
• Balancing biomass for bioenergy and conserving the soil resource, Jane M-F Johnson, AERC (Association of Ecosystems Research) Briefing and Symposium, Washington, DC, September 27, 2007.
• Assessment of utilizing crop biomass for bioenergy on soil, water and air resources:  REAP (Renewable Energy Assessment Program) Jane M-F Johnson, Ron Follett, Doug Karlen, Wally Wilhelm Soil and Water Conservation Society, 2007 Annual Conference, Tampa Florida, July 24-26, 2007
• Crop residue – What’s it worth? Douglas L. Karlen, Biofuels and Water Quality: A Regional Science Forum for the Mid-Atlantic. Mid-Atlantic Regional Water Quality Program and the University of Maryland., Beltsville, MD, April 4, 2007
• Wilhelm, W.W., Varvel, G.E., Karlen, D.L., Johnson, J.M-F., and Baker, J.M. Crop residue as feedstock for the new bioeconomy: Opportunities and roadblocks. In Annual meeting abstracts [CD-ROM]. ASA, CSSA, and SSSA, Madison, WI. 2006.
• Wilhelm, W.W. Making crop residue a sustainable feedstock for biofuel production. USDA Global Conference on Agricultural Biofuels: Research and Economics. Minneapolis, Minnesota, USA. August 20 – 22, 2007. 2007.
• Using CQESTR to Predict Effects of Management Practices on Carbon Sequestration.  Liang, Yi, R.W. Rickman, H.T. Gollany, R.F. Follett, W.W. Wilhelm, J.M. Novak, S.L. Albrecht, and C.L. Douglas, Jr.  In Proceeding of the Fourth USDA Symposium on Greenhouse Gases, Positioning Agriculture and Forestry to Meet the Challenges of Climate Change. p. 50. Baltimore, Maryland. February 6-8, 2007.