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Guretzky, John
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Grassland Management - Instructor
Animal Science - Instructor


John Guretzky is an Associate Professor and Grassland Systems Ecologist in the Dept. of Agronomy and Horticulture at the University of Nebraska-Lincoln (UNL).  He has a 60% research and 40% teaching appointment.  His current research focuses on impacts of interseeding legumes and summer annuals in pasture plant communities.  He teaches an undergraduate course in Forage Crop and Pasture Management and graduate courses in Forage Quality and Forage Evaluation.  Before joining UNL, John served as a Research Agronomist at the Samuel Roberts Noble Foundation in Ardmore, OK, from 2006 to 2009 and Postdoctoral Assistant with the U.S. Army Corps of Engineers Construction Engineering Research Laboratory in Champaign, IL from 2003 to 2006.  He received a Ph.D. in Agronomy from Iowa State University in 2002 and his B.S. in Natural Resources from UNL in 1996.  Professional memberships include the American Society of Agronomy and Crop Science Society of America.


PhD in Crop Production and Physiology, Iowa State University, 2002
BS in Natural Resources, University of Nebraska-Lincoln, 1996