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Relations between mineral elements concentrations in herbage plants of natural communities growing in the semi-arid area of Salamanca

AuthorsGarcía Criado, Balbino ; Valdes Amado, A.; García Ciudad, Antonia ; Gómez Gutiérrez, J. M.
Issue Date1980
PublisherUniversità di Pisa
CitationAgrochimica 24(1): 59-68 (1980)
Abstract[EN]Simple correlations between concentrations of N, P, K, Na, Ca, Mg, S, Cu, Mn and Zn elements in common species of natural plant comunities, growing in different areas of Salamanca semi-arid district (West-Central, Spain) have been studied. For that purpose a simple regression analysis was applied to over-all-samples (333), grasses-alone (177), and legumes. alone (135). It was shown that practically all the studied elements were significantly related for over-samples, P being the element less correlated with all the others. Contrarily the number of correlations found in grasses was considerably lower than the found for over-all-samples, while N, Zn, S and Mg showed the largest numer of significant correlations. Legumes offered very few correlations between their mineral nutrients while N and Cu were the most correlated with all other elements.
[FR]On etudie les rapports simples parmi les concentrations des bioélements en espéces fréquentes seminaturelles de la province de Salamanca. Pour cela on a appliqué une analyse de regression simple à l´ensemble de tous les échantillons (333) a les graminèes (177) et à les legumineuses (135). Au niveau global on trouve que, en général, presque tous les bioelements étudiés sont en correlation significativament entre eux. Le P est l´élement que presente moins de corrélations avec les autres bioéléments. Le nombre de rapports que l´on trouve pour les seules gramineés est assez petit tout en étant le N, Zn, S et Mg les éléments avec un plus grand nombre de relations significatives. Les legumineuses isolées donnent un petit nombre de rapports entre leur bioélements, en étan l´N et le Cu les plus reliés avec les autres.
Description10 páginas, 3 figuras. -- Página Web del editor: http://www.pisauniversitypress.it/landing_page-le-riviste-agrochimica-1497.html
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