Field Agronomist: Clarke McGrath

Counties Served

Clarke McGrath

  • Audubon
  • Crawford
  • Guthrie
  • Harrison
  • Shelby




Areas of Expertise

Corn, Soybean and Forage Production and Protection, Weed Control Program Development, Precision Ag, Fertility Program Development, Field Training/Coaching of Crop Scouting Skills

Frequent Clients

Growers, Ag Chemical and Fertilizer Dealers, Seed Dealers and DSM's, Farm Managers, Chemical Manufacturer Representatives, Agriculture College Students

Joined ISU Extension


Extension Positions/Other Experience
  • Agriland FS-Avoca, IA - Agronomy Services Director/Location Manager 1991-2000
  • Agriland Fs-Griswold, IA - Agronomy Trainee/Scout 1991
  • Zeneca Ag Products, Iowa City, IA - Six Month Technical Assistant Internship 1990
  • Terra Industries, Lenox, IA - Crop Scout, Summer 1988
  • M.S., Agronomy, Iowa State University, 2006
  • B.S., Ag Business, Iowa State University
  • Growmark Continuing Agronomy Education
  • Dale Carnegie Course
  • Key Real Estate/Land Management Course
  • Growmark-3 M.A.R.C. of Excellence Awards
  • 5 Annual Sales Program Awards
  • 6 Iowa Top Gun Awards
  • 3 Regional Top Gun Awards
  • Certified Crop Advisor - Iowa and National
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