Advances in soil-testing research has led Iowa State University Extension agronomists to revise recommendations for phosphorus, potassium and lime.
Iowa State University Extension and Outreach, (800) 262-3804, 2150 Beardshear Hall, Ames, IA 50011-2031
Copyright © 2014 Iowa State University | Contact Us |
Policies | State & National Extension Partners |
For Staff |
Website Log In