Iowa Soil Test Levels
By: Soil View (Midwest Independent Soil Samplers, LLC)
The International Plant Nutrition Institute has recently published the Soil Test Levels in North America report. This report gives a summary of soil test results by each state for 2015 and also includes the data for the 2001, 2005 and the 2010 sampling year. We have included the chart of the Iowa results for phosphorus, potassium and soil pH that you will find interesting. This information is the result of compiling the data of 987,917 soil samples taken in 2015 from Iowa fields. It is interesting to note that the 2001 report consist of 380,265 samples, 2005 – 355,983 samples and the 2010 results are from 775,401 samples. The increase in samples taken from 2010 to 2015 is nearly a 38% increase of samples pulled in Iowa in 5 short years.More