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| | Phosphorus Index
The following files require Microsoft
Excel or Acrobat Reader.
The
Iowa Phosphorus Index (Last revised Aug. 2004) (PDF, 872 KB)
The Iowa Phosphorus Index Calculator
(Last revised August 2007) (XLS, 4.6 MB) - To save this file, right click on the
link, save target as..., name and save file where desired, open the file where
saved.
Background & Basic Concepts
of the Iowa Phosphorus Index
(PDF, 97 KB)
Phosphorus Index Fact Sheet
(PDF, Last revised July 2004)
Technical Note 29:
Choosing the Planning Area of a Field by "Dominant Critical Area" (PDF, 796 KB)
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