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El cobre y el magnesio en suelos y plantas, determinado por el método biológico del Aspergillus niger

Authors: García-Sánchez, Augusto; Dios Vidal, Ramón;

El cobre y el magnesio en suelos y plantas, determinado por el método biológico del Aspergillus niger

Abstract

[ES] En este trabajo se ha puesto al día el método bioquímico del Aspergillus niger, recopilando al efecto las fórmulas de los medios de cultivo empleados, al igual que las técnicas de purificación y valoración. El método se aplica para la determinación de Cu y Mg en numerosos suelos naturales y de labor, ácidos y alcalinos, a diferentes alturas del perfil. También se emplea esta valoración para determinar los mismos elementos en plantas espontáneas y cultivadas. Como consecuencia de las citadas determinaciones, se efectúa una clasificación de los suelos examinados según la cuantía de Cu y Mg hallados, para significar su grado de deficiencia respecto de dichos elementos. Igualmente se clasifican las especies vegetales en atención a la cuantía de los elementos de referencia, señalando cifras máximas, mínimas y medias.

[EN] In this paper the biochemical method of “Aspergillus Niger” has been put up to date by recopilating the formulae of the culture mediums used, as well as the purification and valoration techniques. This method is applied to the determination of Cu and Mg in a number of acid and alkaline natural and culture soils, at different profile heights. We also use this valoration to determine the same elements in cultivated and spontaneous plants. As a consequence of the determination mentioned we make up a classification of the soils examined according to the amount of Cu and Mg found so as to show their degree of deficiency in those elements. We also classify the vegetal species according to the amount of the reference elements and are able to show maximum, minimum and mean figures.

Peer reviewed

Keywords

Magnesio, Cobre, Magnesium, Aspergillus niger, Culture soils, Suelos de cultivo, Cooper

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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