2025 - Mike Naig
2024 - Kristine Tidgren
2023 – Wendong Zhang
2022 – Ron Deiter
2021 – Chuck Grassley
2020 – Steve Johnson
2019 - Paul Lasley
2018 - Bill Northey
2017 - Tom Fenton, ISU Soil Scientist, (CSR)
2016 - Dr. Wendy Windersteen
2015 - S. Elwynn Taylor
2014 - Mike Duffy & William Edwards
2013 - Mark Pearson (posthumous)
2012 - Not Awarded
2011 - Robert Jolly
2010 - Lee Kline
2009 - Wallaces Farmer (Frank Holdmeyer)
2007 - Loren Kruse
2006 - Florine Swanson
2005 - Robert Wisner
2004 - Wayne Nattross
2003 - Roger Bruene
2002 - Marilyn Adams
2001 - Neil Hamilton
2000 - Louis Thompson
1999 - Don Muhm
1998 - Garren Benson
1997 - Keith Kirkpatrick
1996 - Neil Harl