Estimation of Available Phosphorus in Soils by Extraction with Sodium Bicarbonate |
Common terms and phrases
212 samples 50 pounds P2O5 acid soils amount of phosphorus available to plants Beltsville Bray method Ca++ activity calcareous soils calcite calcium phosphates carbon black CO₂ method common ion effect containing P32 Correlation coefficient Corvallis crop response exchanges with P32 extractable phosphorus extracting solution field and greenhouse field experiments forms of phosphorus Fort Collins greenhouse experiments groups of soils H+ activity HCO3 ions loam maximum yield measure Millville molar NaHCO3 extracts NaHCO3 method NaHCO3-Soluble Phosphorus pounds Number of soils P2O5 per acre percent percentage of maximum percentage of soils pH values phate phorus phosphate solubility phosphate-fertility level phosphorus soluble plant available phosphorus pounds P₂O predicting ratio relationship responded to phosphate Responding to Phosphorus secondary precipitation reactions soil particles soil pH soil tests soil types soils responded soils showing solubility of phosphorus soluble in NaHCO3 standard error surface of soil surface phosphorus Thirty soil samples tions yield of lettuce yield response