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Soil Fertility

Questions? Contact John Sawyer

Professor
Extension Soil Fertility Specialist
Phone: (515) 294-7078
Email: jsawyer@iastate.edu

Antonio Mallarino

Professor, Soil Fertility
Phone: (515) 294-6200
Fax: (515) 294-2458
Email: apmallar@iastate.edu

Soil Fertility Home Page

Welcome to the Iowa State University Agronomy Extension Soil Fertility Home Page. Nutrient topics are listed on the left side. Simply click on a topic of interest and you can find information about that topic, including Extension publications, newsletter articles, conference proceedings and reports, presentations, and links to other related sites. Links also provide access to soil fertility decision aid tools, a photo gallery, and the ISU Soil and Plant Analysis Laboratory.

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Current Topic

46th ANNUAL NORTH CENTRAL EXTENSION-INDUSTRY SOIL FERTILITY CONFERENCE

John Sawyer, Professor, Department of Agronomy, Iowa State University
September 14, 2016

If you would like to learn more about current soil fertility issues and research being conducted at universities across the North Central region, then consider attending the 46th Annual North Central Extension-Industry Soil Fertility Conference to be held November 2-3, 2016, from 1:00 p.m. to noon, at the Holiday Inn Airport in Des Moines, Iowa. The conference is early this year. Read on.


Past Current Topics

 

DO YOU KNOW THE STORY OF SOIL?

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Do you know The Story of Soil? Human Health Food Quality Water

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Iron chlorosis symptom - soybean. Photo © John E. Sawyer

Iron chlorosis symptom - soybean. Photo © John E. Sawyer

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