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University of Nebraska–Lincoln

Agronomy and Horticulture

The Science and Application of Plants to Sustain and Enhance Human Life

John F. Shanahan

Assistant Professor (Adjunct) and
Research Agronomist

Contact Information
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DEGREES:

  • B.S., Agronomy, University of Nebraska, 1977
  • M.S., Agronomy/Plant Breeding, Colorado State University, 1979
  • Ph.D., Agronomy/Crop Physiology, Colorado State University, 1982

RESEARCH INTERESTS:

Crop physiology; microclimatology, remote sensing, and use of site-specific management tools.

EXTENSION INTERESTS:

Transfer crop production technologies and information to producers, consultants, agribusiness, and industry in the region, U.S., and internationally.

MAJOR PROJECT ACTIVITIES:

My emphasis is on conducting research to increase our understanding of soil-plant-water relationships in the Great Plains with the goal of more efficient application of crop production inputs. Specific activities include developing remote sensing techniques to detect crop stresses (water, nitrogen, etc.), evaluating the effect of stresses on crop production, and integration of data acquired from site-specific management studies into decision support tools. These projects are in cooperation with agribusiness, industry, specialty foundations, and government agencies.

SELECTED PUBLICATIONS:

  • Kitchen, N.R., K.W.T. Goulding and J.F. Shanahan. 2007. Proven practices and innovative technologies for on-farm crop nitrogen management. (Book Chapter) In (ed. by R.F. Follett and J.L. Hatfield) Nitrogen in the Environment: Sources, Problems and Management. Elsevier Sci. (In Press).

  • Shanahan, J.F., N.R. Kitchen, W.R. Raun and J.S. Schepers. 2007. Responsive in-season nitrogen management for cereals. Computer & Electronics in Agric. (In Press).

  • Varvel, G.E., W.W. Wilhelm, J.F. Shanahan, and J.S. Schepers. 2007. An algorithm for corn nitrogen recommendations using a chlorophyll meter based sufficiency index. Agron. J. 99:701-706.

  • O’Neill, P.M., J.F. Shanahan, and J.S. Schepers. 2006. Use of chlorophyll fluorescence assessments to differentiate corn hybrid response to variable water conditions. Crop Sci. 46:681–687.

  • Schlemmer, M.S., D.D. Francis, J.F. Shanahan, and J. S. Schepers. 2005. Remotely measuring chlorophyll content in corn leaves with differing N. Agron. J. 97: 106-112.

  • Schepers, J. S. and J. F. Shanahan. 2005. Variable-rate nitrogen management: One option for better profits. Fluid J. 13:20-23.

  • Schepers, J.S., D.D. Francis, and J.F. Shanahan. 2005. Relay cropping for improved air and water quality. Zeitschrift fur Naturforschung C. Special Issue. 60:186-189.

  • Bauder, T.A., K.A. Barbarick, J.A. Ippolito, J.F. Shanahan, and P.D. Ayers. 2005. Drilling-fluid application effects on wheat yields, and soil and grain properties. J. Environ. Q. 34:1687-1696.

  • Shanahan, J. F., T.A. Doerge, J. J. Johnson, and M.F. Vigil. 2004. Feasibility of site-specific management of corn hybrids and plant densities in the Great Plains. J. Prec. Ag. 5:207-225.

  • O’Neill, P. M., J.F. Shanahan, J. S. Schepers, and B. Caldwell. 2004. Agronomic responses of corn hybrids from different eras to deficit and adequate levels of water and nitrogen. Agron. J. 96: 96:1660-1667.

  • Schepers, A., J.F. Shanahan, M. A. Liebig, J.S. Schepers, S. Johnson, and A. Luchiari. 2004. Appropriateness of management zones for characterizing spatial variability of soil properties and corn yields across years. Agron. J. 96:195-203.

  • Schepers, J.S., S. Payton, D.D. Francis, and J.F. Shanahan. 2003. Improving nutrient management via evolving strategies and new technologies. Fluid J. 41:18-22.

  • Johnson, C.K., D.A. Mortensen, B. J. Wienhold, J.F. Shanahan, and J.W. Doran. 2003. Site-specific management zones based on soil electrical conductivity in a semiarid cropping system. Agron. J. 95:303-315.

  • Eghball, B. J.F. Shanahan, G.E. Varvel, and J. Gilley. 2003. Reduction of high soil test phosphorus by crop removal. Agron. J. 95:1233-1239.

  • Johnson, C.K., J.W. Doran, H.R. Duke, B.J. Wienhold, K.M. Eskridge, and J.F. Shanahan. 2001. Field-scale electrical conductivity mapping for delineating soil condition. Soil Sci. Soc. Am. 65:1829-1837.

  • Johnson, C.K., J.W. Doran, H.R. Duke, B.J. Wienhold, K.M. Eskridge, and J.F. Shanahan. 2001. Field-scale electrical conductivity mapping for delineating soil condition. Soil Sci. Soc. Am. 65:1829-1837.

  • Shanahan, J.F., J.S. Schepers, D.D. Francis, G.E. Varvel, W.W. Wilhelm, J.S. Tringe, M.R. Schlemmer, and D.J. Major. 2001. Use of remote sensing imagery to estimate corn grain yield. Agron. J. 93:583-589.