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EVALUATION OF LABORATORY INDEXES OF ABSORPTION OF SOIL PHOSPHORUS BY PLANTS: II

THOMPSON, E. J. ; OLIVEIRA, A. L. F. ; MOSER, U. S. ; BLACK, C. A.

Plant and soil, 1960-08, Vol.13 (1), p.28-38 [Periódico revisado por pares]

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Título:
EVALUATION OF LABORATORY INDEXES OF ABSORPTION OF SOIL PHOSPHORUS BY PLANTS: II
Autor: THOMPSON, E. J. ; OLIVEIRA, A. L. F. ; MOSER, U. S. ; BLACK, C. A.
Assuntos: Acid soils ; Adsorption ; Agricultural soils ; Phosphates ; Phosphorus ; Phosphorus acids ; Phosphorus isotopes ; Soil samples ; Soil solution ; Soil water
É parte de: Plant and soil, 1960-08, Vol.13 (1), p.28-38
Descrição: A comparison was made of several laboratory methods for estimating the yield of phosphorus in plants grown in greenhouse cultures on samples of 22 soils from different parts of the United States. The methods investigated and their rank in order of increasing precision of the estimates of the yield of phosphorus were as follows: extraction with lactic acid, calcium lactate buffer solution ⋞ extraction with 2 per cent citric acid solution ⋞ extraction with 0.03 N NH₄F, 0.025 N HC1 solution < "percentage phosphorus saturation" (found as follows: 100 × labile phosphorus by isotopie dilution/ "phosphorus adsorption capacity" according to Langmuir adsorption equation) ⋞labile phosphorus by isotopie dilution ⋞ phosphorus extracted by water.
Editor: Martinus Nijhoff
Idioma: Inglês

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