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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

2017 SOIL FERTILITY AND NUTRIENT MANAGEMENT SHORT COURSE

John Sawyer, Professor, Department of Agronomy, Iowa State University
January 11, 2017

If you are interested in an in-depth course covering soil fertility and nutrient management, then consider attending the Iowa State University Extension and Outreach 2017 Soil Fertility and Nutrient Management Short Course. This is a two-day event that provides an opportunity to dig deeper into the fundaments of soil fertility, nutrient management, and relationships to profitable crop production and water quality. The course is February 8-9, 2017 at the Scheman Continuing Education Building located at the Iowa State Center in Ames, Iowa. 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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