Iowa State University Agronomy Extension
  Welcome to the ISU Soil Fertility Web Site


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Soil Fertility Web site
  |Agronomy Extension| |ISU Extension| |Dept. of Agronomy|
|ISU College of Agriculture| |Iowa State University|

Iowa State University Extension
Ames, Iowa 50011
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All rights reserved.

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Nutrient topics:
|soil sampling and testing| |soil test interpretations and recommendations| |lime and soil pH| |nitrogen| |phosphorus|
|potassium| |secondary and micronutrients| |manure|
|nonconventional additives and byproducts|
|nutrient deficiencies| |nutrient management/planning|

|Photo Gallery| |Links| |Faculty/Staff| |ISU Soil Test Lab| |Weather/climate|

|Accessibility Issues|

last updated: March 11, 2008

Web design by Liisa Järvinen


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