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Soil Fertility

Contact John Sawyer

phone: (515) 294-7078

Faculty and Staff

Faculty:

John Sawyer
Professor
Extension Soil Fertility Specialist
Department of Agronomy
3208 Agronomy Hall
Iowa State University
Ames, IA 50011
email: jsawyer@iastate.edu
phone: (515) 294-7078
web site
Antonio Mallarino
Professor
Soil Fertility
Department of Agronomy
3216 Agronomy Hall
Iowa State University
Ames, Iowa 50011
email apmallar@iastate.edu
phone (515) 294-6200
fax (515) 294-2458
web site

 

Staff:

Daniel Barker
Assistant Scientist
Department of Agronomy
2210 Agronomy Hall
Iowa State University
Ames, IA 50011
email: dbarker@iastate.edu
phone: (515) 294-0359
fax: (515) 294-3163
 

 

 

Yellow corn leaf with fast growing corn. Photo © John E. Sawyer

Yellow corn leaf with fast growing corn. Photo © John E. Sawyer

Meet John Sawyer

John Sawyer