Comparación de diferentes extractantes para azufre en suelos de Costa Rica

Comparación de diferentes extractantes para azufre en suelos de Costa Rica

1975

Solutions of calcium phosphate, potassium phosphate, calcium phosphate-acetic acid, calcium phosphate-calcium chloride, ammonium acetate, and sodium bicarbonate-acetic acid, and calcium chloride were tested as extractants for sulfur from 30 Costa Rican soils. Calcium chloride, ammonium acetate and sodium bicarbonate-acetic acid were discarded because of either removing small amounts of sulfur or problems in analizing the filtrate by turbidimetry. Of the four remaining extractants, the sulfur extracted by calcium phosphate and by potassium phosphate was best related to sulfur responses by sorghum in the greenhouse. Estimated critical levels for the four methods were six ppm for calcium phosphate-acetic acid, eight ppm for calcium phosphate, six ppm for potassium phosphate and three ppm for calcium phosphate-calcium chloride.

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Informations bibliographiques

D'autres materias

Cloruro calcico||calcium chloride||cloreto de cálcio||chlorure de calcium; Azufre||sulfur||enxofre||soufre; Fosfato de calcio||calcium phosphates||fosfato de cálcio||phosphate de calcium; Análisis del suelo||soil analysis||análise do solo||analyse de sol; Suelo||soil||solo||sol; Extracción||extraction||extracção||extraction; Técnica analítica||analytical methods||técnica analítica||technique analytique; Elemento químico||elements||elemento químico||élément chimique

Langue

espagnol; castillan

Type

Journal Article; Journal Part

Sur AGRIS depuis: 2025-06-17

Date de modification: 2025-10-25

Format: MODS

Fournisseur de données

Cette notice bibliographique a été fournie par Centro agronómico tropical de investigación y enseñanza

Découvrez la collection de ce fournisseur de données dans AGRIS

Liens

https://repositorio.catie.ac.cr/handle/11554/12844