Reetz Agronomics, LLC

Dr. Harold F. Reetz, Jr.

Current position

Agronomy Consultant
High Yield Production Systems
Precision Agriculture

Areas of Expertise

Research and education programs in crop and soil management, with special emphasis on high-yield production systems, site-specific precision farming technology, information management systems, and nutrient management practices. Coordinator of 12 InfoAg Conferences (1995-2009) and Co-coordinator of Internal Conference on Precision Agriculture (2008, 2010).

Degrees Received

  • 1970 B.S. Agricultural Science-Agronomy, University of Illinois, Urbana, IL
  • 1972 M.S., Crop Physiology and Ecology, Purdue University, West Lafayette, IN
  • 1976 Ph.D., Crop Physiology and Ecology, Purdue University, West Lafayette, IN

Present and Past Positions

  • Reetz Agronomics, LLC (Agronomic Consultant, 2010-present)
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  • Ag Drainage Management Coalition (Executive Director, 2010- 2011)
  • 2007-2010. International Plant Nutrition Institute, Director of External Support and FAR
  • 2004-2007. Foundation for Agronomic Research (President)
  • 1982-2004. Potash & Phosphate Institute (Midwest Regional Director)
  • 1974-1982. Dept. of Agronomy, Purdue University, West Lafayette, IN. Associate Professor, Extension/Research Corn Specialist,

Courtesy Appointments

  • University of Illinois, Adjunct Professor, (1999-Present); Collaborator (1982-1999)
  • Purdue University, Graduate Faculty, (1990-Present)

Professional Activities

American Society of Agronomy

  • Member (1968 to present);
  • Elected ASA Fellow (1993)
  • Member, ASA Board of Directors (1995, 1998-2001, 2001-2004)

Crop Science Society of America

  • Member (1970 to present);
  • Elected CSSA Fellow (1992)

Soil Science Society of America

  • Member (1979 to present);
  • Board of Directors (1995)


  • Certified Professional Crop Scientist (CPCS)
  • Certified Professional Agronomist (CPAg)
  • ARCPACS Board (served as Chair) (1994-1996)

International Certified Crop Adviser Program (ICCA)

  • Served on organizing task force and on the International CCA Board (1993-2000),
  • Int’l CCA Board Chair (1997-1998).
  • Illinois CCA State Board (1993-present)
  • Indiana and Kentucky State Boards (1993-1995)

Other organizations

  • Ag Drainage Management Coalition (ADMC)
    • Executive Director
  • International Society of Precision Agriculture (ISPA)
    • Acting Executive Director
  • Illinois Fertilizer & Chemical Association (IFCA)
    • Adviser, Board of Directors (1982-present)
    • Agronomy Committee
  • Conservation Technology Information Center (CTIC)
    • Board of Directors (1995-present; 1st VP (2009-2011)
  • National Association of Conservation Districts (NACD)
    • Member, Executive Committee, Board of Directors (2009-2011)