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Each element is reported in parts per million (ppm). The reported Cu and Mn recommendations are derived by a proprietary formula that calculates the effects other soil factors on the availability of Cu and Mn. For more information on [[:library:articles:s_basics|sulfur]], [[:library:articles:b_basics|boron]], [[:library:articles:zn_basics|zinc]], [[:library:articles:mn_basics|manganese]], [[:library:articles:cu_basics|copper]] and [[:library:articles:fe_basics|iron]] click on the individual element. Each element is reported in parts per million (ppm). The reported Cu and Mn recommendations are derived by a proprietary formula that calculates the effects other soil factors on the availability of Cu and Mn. For more information on [[:library:articles:s_basics|sulfur]], [[:library:articles:b_basics|boron]], [[:library:articles:zn_basics|zinc]], [[:library:articles:mn_basics|manganese]], [[:library:articles:cu_basics|copper]] and [[:library:articles:fe_basics|iron]] click on the individual element.
- ===== P2 Phosphorus=====  
-  
-This is the Bray P<sub>2</sub> phosphorus test. It is a test developed many years ago to monitor the effects of large applications of rock phosphate fertilizer, which is very slowly soluble. It is sometimes used as an indicator of the "reserve" phosphorus supplying power of the soil. This is a controversial practice and Spectrum Analytic does not use this value in evaluating soils or making recommendations. 
===== Sodium (Na)===== ===== Sodium (Na)=====
 
library/articles/how_to_read_soil_report.txt · Last modified: 2014/04/21 11:09 by bill