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Influencia del estado de madurez sobre la composición mineral de especies pratenses. I. Cultivares de los géneros Trifolium y Medicago

Authors: García Ciudad, Antonia; García Criado, Balbino; García Criado, Luis;

Influencia del estado de madurez sobre la composición mineral de especies pratenses. I. Cultivares de los géneros Trifolium y Medicago

Abstract

[ES]Se estudia la variación en la composición mineral (cenizas, N, P, K, Ca, Mg, Na, Fe, Mn, Cu y Zn) con el avance de madurez de la planta, en siete cultivares de Trifolium repens (2cv), Trifolium pratense (2cv) y Medicago sativa (3 cv). Las concentraciones de N, P, K, Fe y Zn disminuyen con la madurez, así como también los porcentajes de cenizas. Las de Ca y Mg manifiestan una tendencia, aunque no muy clara, a incrementarse ligeramente. Para Na y Cu no se aprecia una tendencia generalizable, presentando además el Na gran variabilidad en sus concentraciones y márgenes de fluctuación, tanto a nivel de especie como de cultivar. Las evoluciones de Mn varían según la especie y cultivar. Los cultivares de T. repens alcanzan las concentraciones medias superiores para la mayoría de los elementos, sin embargo las extracciones mayores, corresponden, en general, a los de T. pratense.

[EN] This work studies the variation in the mineral composicion (ashes, N, P, K, Ca, Mg, Na, Fe, Mn, Cu and Zn) along the plant maturity advance in seven cultivars of T. repens (2cv). T. pratense (2cv), and Medicago sativa (3cv). N, P, K, Fe and Zn concentrations decrease with maturity and so the ashes percentages do; those of Ca and Mg show a tendency, though not quite clear, to slightly increasing. Na and Cu do not present a generalizable tendency, moreover, the Na shows a great variability in its concentrations and fluctuation margins, to spatial level as much as to cultivar. The Mn evolution varies according to species and cultivar. T. repens cultivars reach superior mean concentrations for most of its elements, however, major elemental uptake generally correspond to those of T. pratense.

17 páginas, 4 figuras, 2 tablas.-- Con la colaboración técnica de: M.I. Díaz-Güemes Pérez, J.C. Estévez Gonzáles, M.A. Sánchez Rodríguez y M. Martín Hernández

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
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.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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