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Interpreting Your Soil Test Results - The Center for ...
ag.umass.eduSoil phosphorus exists in a wide range of forms. Some phosphorus is present as part of soil organic matter and becomes available to plants as the organic matter decomposes. Most inorganic soil phosphorus is bound tightly to the surface of soil minerals (e.g., iron and aluminum oxides). Warm, moist, well-aerated soils at a pH
Inherent Factors Affecting Soil Phosphorus
www.nrcs.usda.govFour 1:1 soil water mixture/water soluble PO. 4 . tests indicated higher available P than standard Bray 1 & Olsen P tests. 2. Based on Nebguide “Fertilizer Suggestions for Corn” G74-174-A, Revised Sept. 2001. 3 . Recommendations are based …