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With the cooperation of numerous public and private soil testing laboratories, PPI/PPIC periodically summarizes soil test levels for phosphorus, potassium, and pH in North America. The 2005 summary contains levels of magnesium and sulfur as well. Soil tests indicate the relative capacity of soil to provide nutrients to plants.
This summary can be viewed as an indicator of the overall nutrient supplying capacity of soil to provide nutrients to plants. This is the ninth summary completed by the Institute, with the first dating back to the 1960s. The summary offers a snapshot view of soil test levels in the U.S. and Canada in 2005, but also provides a comparison to the previous summary which was completed in 2001. Since the 2005 summary is the second in which laboratories were asked to contribute complete frequency distributions of soil test results, temporal changes in soil test level distributions can be viewed for the first time for states and provinces.
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|  Soil Test Levels in North America on CD ROMThe optional CD-ROM contains a PDF file showing the pages of the report, a PowerPoint file of all figures (graphs) in the report, and an Excel workbook of the major tables to facilitate construction of custom graphs for regions of interest.
| | |  Printed version + CD packageGet both the full color printed report and CD in this package deal. You save $10.00 by ordering the package vs. ordering each item separately.
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