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Producción y extracción de bioelementos en pastizales naturales y especies pratenses cultivadas

Authors: García Criado, Balbino; García Ciudad, Antonia; Montalvo Hernández, M. I.; García Criado, Luis;

Producción y extracción de bioelementos en pastizales naturales y especies pratenses cultivadas

Abstract

[ES]Se integran y complementan diversos estudios realizados durante cuatro años consecutivos sobre evaluación y composición mineral de los principales tipos de pastizales naturales de una zona semiárida (provincia de Salamanca). Así mismo, el trabajo se extiende a siete especies pratenses (23 cultivares) idóneas para los regadíos de la cuenca del río Tormes. Los aspectos que se consideran son las producción de materia seca y la extracción de bioelementos (mineraloma) por las plantas en diversas fases del crecimiento primario. Los parámetros cuantificados muestran un estrecho paralelismo en su evolución con la madurez, describiendo líneas sigmoides con los máximos hacia el final del ciclo. El mismo comportamiento aparece también al considerar las cotas alcanzadas, los tipos de pastizal menos oligotrofos presentan las mayores producciones y también las mayores extracciones, especialmente en los elementos N, P, K, Ca y Mg. A nivel de especie Trifolium pratense y Dactilys glomerata aparecen con las producciones más altas y muestran el mayor poder de extracción, aunque no con carácter generalizado.

[EN]Several studies carried out during four consecutive years on the mineral evaluation and composition of the principal kinds natural grasslands of a semiarid zone (Province of Salamanca, Spain) are integrated and complemented. The work is also extended to cover seven grassland species (23 cultivars) ideal for the irrigated areas of the River Tormes basin. The aspects considered are the production phases of primary growth. The parameters measured bring to light a close parallelism in their evolution with maturity describing sigmoidal plots with their maxima towards the end on the cycle. The same behaviour may be appreciated on considering the quotas reached; the less oligotrophic kinds of grasslands show the greatest production and extraction values, particularly in N, P, K, Ca and Mg. At species level, Trifolium pratense and Dactylis glomerata appear as having the highest production rates and the greatest and extraction capacity, though this, may not be generalized.

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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!
views
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