Henry A. Wallace Chair for Sustainable Agriculture

Publications

Diversified Cropping Systems

Video

On the Ground with the Leopold Center, Extending corn and soybean rotations. 2009. (See Video)

Extension Report

Chase, C., K. Delate, M. Liebman, and K. Leibold. 2008. Economic analysis of three Iowa rotations. (PMR 100). Ames, Iowa: Iowa State University, University Extension. (See Bulletin)

Posters

Agronomic, environmental, economic, and energetic characteristics of conventional and low-external-input cropping systems in the U.S. Corn Belt. 2009. (See Poster)

Fossil Energy Use in Conventional and Low-External-Input Cropping Systems. 2009 (See Poster)

Publications

Liebman, M., L.R. Gibson, D.N. Sundberg, A.H. Heggenstaller, P.R. Westerman, C.A. Chase, R.G. Hartzler, F.D. Menalled, A.S. Davis, and P.M. Dixon. 2008. Agronomic and economic performance characteristics of conventional and low-external-input cropping systems in the central Corn Belt. Agronomy Journal 100: 600-610. (See Abstract)

O'Rourke, M.E., M. Liebman, and M.E. Rice. 2008. Ground beetle (Coleoptera: Carabidae) assemblages in conventional and diversified crop rotation systems. Environmental Entomology 37: 121-130. (See Abstract)

Picasso, V.D., E.C. Brummer, M. Liebmann, P.M. Dixon, and B.J. Wilsey. 2008. Crop species diversity affects productivity and weed suppression in perennial polycultures under two management strategies. Crop Science 48: 332-342. (See Abstract)

Williams, C.L., W.W. Hargrove, M. Liebman, and D.E. James. 2008. Agro-ecoregionalization of Iowa using multivariate geographical clustering. Agric. Ecosys. Environ. 123: 161-174.

Williams, C.L., M. Liebman, J.W. Edwards, D.E. James, J.W. Singer, R. Arritt, and D. Herzmann. 2008. Patterns of regional yield stability in association with regional environmental characteristics. Crop Science 48: 1545-1559.

Schwarte, A.J., L.R. Gibson, D.L. Karlen, P.M. Dixon, M. Liebman, and J.-L. Jannink. 2006. Planting date effects on winter triticale grain yield and yield components. Crop Science 46: 1218-1224. (See Abstract)

Schwarte, A.J., L.R. Gibson, D.L. Karlen, M. Liebman, and J-.L. Jannink. 2005. Planting date effects on winter triticale dry matter and nitrogen accumulation. Agronomy Journal 97:1333-1341. (See Abstract)

Griffin, T., M. Liebman, and J. Jemison Jr. 2000. Cover crops for sweet corn production in a short-season environment. Agronomy Journal 92: 144-151.

Return to Wallace Chair Projects

"Wise land use is simply an adaptation of nature's conservation and flood control methods to the conditions of advanced cultivation."
--H. A. Wallace