Mark Johnson

People
Field Agronomist in Central Iowa
Field Specialist III

Mark Johnson is a field agronomist in central Iowa for Iowa State University Extension and Outreach. He frequently speaks with farmers, crop consultants, agronomists, and farm managers about integrated crop management, crop and soybean management, soil fertility, alfalfa, tillage systems, and soil surveys. He also provides information and guidance on integrated pest management, involving weeds, insects, and crop disease.

Johnson is a Certified Professional Agronomist and Certified Crop Advisor, and a member of the American Society of Agronomy and Gamma Sigma Delta - The Honor Society of Agriculture.

You can subscribe to Mark's newsletter, Integrated Agronomics, for best management practices and crop production information for central Iowa.

Area of Expertise: 
Crop management
Agronomy
Education: 
B.S., Agricultural Education, Iowa State University
M.S., Agronomy, Iowa State University
Contact
(515) 979-9578
220 H Avenue
Nevada
Iowa
50201