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Influence of temperature and moisture on soil phosphorus. I. Effect on soil phosphorus fractions



Influence of temperature and moisture on soil phosphorus. I. Effect on soil phosphorus fractions



Soil Science Society American Proceedings 24(5): 381-385



Soil incubated at -20.5[degree]C for 9 months released more P when leached with water than soil incubated at 2.7[degree]C. At a leaching temperature of 32[degree] C more P was released than at 16[degree]C. The amount of P released was correlated with a decrease in acid-soluble P and an increase in alkali-soluble P (iron phosphate) in the soil after leaching. It is suggested that preconditioning temperature changes either the types of P compounds or the surface area of those present in the soil. Incubating under anaerobic conditions increased the alkali-soluble P; however, this P did not contribute to the supply of P available to the plant.

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Accession: 014081135

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DOI: 10.2136/sssaj1960.03615995002400050022x


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