Greg Kruger

Assistant Professor 
Cropping Systems Specialist

Weed Ecologist/Crops Specialist Greg Kruger

Office Location:
Office Address:


West Central Research and Extension Center
402 West State Farm Road
North Platte, NE 69101
(308) 696-6715
(308) 696-6780

Extension Program Areas:

  • Sustainable water management in crop production systems
  • Integrated pest management
  • Profitable and sustainable crop production
  • Spray application technology
  • Crop variety and hybrid evaluation

Focus Areas of Interest:

  • Increasing crop yields through water management practices
  • Understanding crop residue management and the impacts of crop residue on crop yields and soil quality
  • Interactions between pest management strategies
  • Systems approach to understanding crop production
  • Maximizing efficiency and efficacy of pesticide applications
  • Optimizing the use of biotechnology

Selected Publications:

  • Davis, V.M., G.R. Kruger, B.G. Young, and W.G. Johnson. Fall and spring preplant herbicide applications influence spring emergence of glyphosate-resistant horseweed (Conyza canadensis). Weed Technology (In press).
  • Davis, V.M., G.R. Kruger, S.G. Hallett, P.J. Tranel, and W.G. Johnson. 2010. Heritability of glyphosate resistance in Indiana horseweed (Conyza canadensis) populations. Weed Science 58:30-38.
  • Kruger, G.R., V.M. Davis, S.C. Weller, J.M. Stachler, M.M. Loux, and W.G. Johnson. 2009. Frequency, distribution, and characterization of horseweed biotypes with resistance to glyphosate and ALS-inhibiting herbicides. Weed Science 57:652-659.
  • Davis, V.M., G.R. Kruger, J.M. Stachler, M.M. Loux, and W.G. Johnson. 2009. Growth and seed production of horseweed (Conyza canadensis) populations resistant to glyphosate, ALS-Inhibiting, and multiple (glyphosate+ALS-Inhibiting) herbicides. Weed Science 57:494-504.
  • Johnson, W.G., V.M. Davis, G.R. Kruger, and S.C. Weller. 2009. Influence of glyphosate-resistant cropping systems on weed species shifts and glyphosate-resistant weed populations. European Journal of Agronomy 31:162-172.
  • Johnson, W.G., M.D.K. Owen, G.R. Kruger, B.G. Young, D.R. Shaw, R.G. Wilson, J.W. Wilcut, D.L. Jordan, and S.C. Weller. 2009. Farmers attitudes toward impending problems with genetically engineered glyphosate resistant crops may endanger the sustainability of chemically based weed management. Weed Technology 23:308-312.
  • Givens, W.A., D.R. Shaw, G.R. Kruger, W.G. Johnson, S.C. Weller, B.G. Young, R.G. Wilson, M.D.K. Owen, and D. Jordan. 2009. Survey of tillage trends following the adoption of glyphosate resistant crops. Weed Technology 23:150-155.
  • Kruger, G.R., W.G. Johnson, S.C. Weller, M.D.K. Owen, D.R. Shaw, J.W. Wilcut, D.L. Jordan, R.G. Wilson, M.L. Bernards, and B.G. Young. 2009. U.S. grower views on problematic weeds and changes in weed pressure in glyphosate-resistant corn, cotton, and soybean cropping systems. Weed Technology 23:162-166.
  • Kruger, G.R., V.M. Davis, S.C. Weller, and W.G. Johnson. 2008. Response and survival of rosette-stage horseweed (Conyza canadensis) after exposure to 2,4-D. Weed Science 56:748-752.
  • Westhoven, A.M., G.R. Kruger, C.K. Gerber, J.M. Stachler, M.M. Loux, and W.G. Johnson. 2008. Characterization of selected common lambsquarters (Chenopodium album) biotypes with tolerance to glyphosate. Weed Science 56:685-691.
  • Kruger, G.R., L. Xing, A.R. LeRoy, and A. Westphal. 2008. Meloidogyne incognita resistance in soybean under Midwest conditions. Crop Science 48:716-726.
  • Kruger, G.R., L. Xing, J.B. Santini, and A. Westphal. 2007. Distribution and damage caused by root-knot nematodes on soybean in Southwest Indiana. Online. Plant Health Progress. Plant Health Progress doi:10.1094/PHP-2007-1031-01-RS.

Professional Memberships:

  • American Society of Agronomy
  • Crop Science Society of America
  • North Central Weed Science Society
  • Society of Nematologists
  • Soil Science Society of America
  • Weed Science Society of America


  • PhD 2010 Weed Science. Purdue University, West Lafayette, IN.
  • MS 2006 Plant Pathology. Purdue University, West Lafayette, IN.
  • BS 2004 Agribusiness and Applied Economics, Ohio State University, Columbus, OH.

Professional Experience:

  • Assistant Professor, University of Nebraska-Lincoln, (2010-present).
  • Graduate Research Assistant, Purdue University, (2004-2010).
  • Laboratory Assistant, GIS Lab, Ohio State/NRCS, (2002-2004).
  • Farm hand, Kruger Farms, (1994-2000).


West Central Research and Extension Center
Agronomy and Horticulture