Abstract
WHEN soil is suspended in dilute calcium chloride solution the calcium dihydrogen phosphate potential (pH2PO4 + ½pCa) varies with the soil : solution ratio1 and with the period for which the soil is in suspension2. Air-drying and re-wetting also affect the phosphate potential2. Laboratory measurements lacking precision will help little in predicting phosphate availability in field soils.
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SALMON, R. Changes in Phosphate Potential on Re-wetting Air-dry Soil. Nature 205, 316 (1965). https://doi.org/10.1038/205316a0
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DOI: https://doi.org/10.1038/205316a0
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