Adsorción de fósforo por suelos ácidos de Misiones (Argentina)

Abstract:

Phosphorus deficiency in acid soils is related to soil ability to fixe this element through adsorption and precipitation reactions. In order to select the best mathematical model for phosphorus adsorption in soils from Misiones (Argentina), A horizons samples from seventeen different soils were analyzed. Adsorption isotherms were determined by Fox and Kamprath method. Data were performed by Langmuir and Freundlich equations, and by a combined model of Langmuir-Freundlich, that resulted the best one. According to the Langmuir-Freundlich the different soils could be grouped into very high, high, medium and low phosphorus adsorption capacity. The Kds coefficient of combined model Langmuir-Freundlich were negatively related with loam, Ca, Sums of bases, and total P, and positively with aluminum-oxalate.

Año de publicación:

2000

Keywords:

Fuente:

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