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handle: 10261/77851
[EN]A study was made of the mineral composition (P, K, Ca, Mg, Na, Fe, Mn, Zn and Cu) in grasslands on slopes in the province of Salamanca. On the upper parts of the slopes, with a greater proportion by weight in legumes and other families as compared with gramineae, the grass was found to be richer in Ca, Cu and Fe. Upon considering families, the highest concentrations were generally observed on the lower parts of the slopes. Both at global and family level, the most noteworthy interzone differences were observed in the concentrations of Na. Regarding this element, the greatest differences were also found when dealing with the upper and lower parts of the slopes separately. During the period considered the grass was seen to cover the nutritional requeriments of the cattle in K, Ca, Mn and Fe. With respect to the other elements, it may be potentially deficient particularly in P, Na and Mg.
[ES]Se estudia la composición mineral (P, K, Ca, Mg, Na, Fe, Mn, Zn y Cu) en pastos de laderas de la provincia de Salamanca. En las zonas altas, con mayor proporción en peso de leguminosas y otras familias en detrimento de las gramíneas, la hierba es más rica en Ca, Cu y Fe. En el análisis por familias, las concentraciones más elevadas se obtienen, en general, en las zonas bajas. Las diferencias más notables interzonas se aprecian en las concentraciones de Na y, asimismo, la mayor variabilidad al tratar por separado zonas altas y bajas. En el periodo considerado, la hierba cubre las necesidades nutricionales del ganado en K, Ca, Mn y Fe. Con relación a los otros elementos, es potencialmente deficiente, particularmente en P, Na y Mg.
8 páginas, 2 figuras, 1 tabla.-- Con la colaboración técnica de: L. García, J.C. Estévez y M. Hernández.
Peer reviewed
Slope, Minerals., Dehesa, Natural grasslands
Slope, Minerals., Dehesa, Natural grasslands
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