Journal of Food, Agriculture and Environment

Nutritional analysis of six forest species grown under two different edaphological conditions in a Mediterranean environment: III. Cations and their forms

Author(s):

María M. Rubio-Wilhelmi ¹, Eva Sánchez-Rodríguez ¹, Begoña Blasco ¹, Francisco Serrano ², Juan M. Ruiz ¹, Jose L. Rosua ², Luis Romero ¹*

Recieved Date: 2012-01-12, Accepted Date: 2012-05-07

Abstract:

The forest plants used were Quercus rotundifolia, Juniperus oxycedrus, Retama sphaerocarpa, Cistus albidus, Phlomis lychnitis and Daphne gnidium.  These were grown with different pH values from 6.0 (Llano de la Perdiz) to 8.0 (Sierra Elvira) under similar climatic conditions, both zones are situated in the province of Granada (Spain). The foliar levels of total and soluble K were high in comparison to other autochthonous and cultivated species. There was a notable antagonism between K and Na in their total form in the different species studied regardless of the area or zone. This phenomenon was found in Q. rotundifolia with high K levels and very low Na. These high K and low Na concentrations, in both forms (total and soluble) enabled us to deduce that all species were adapted to conditions of water and temperature stress, conferring them added value with respect to cryptogamic diseases. The Ca concentration was similar to that of other wild species but lower than that reached in cultivated Solanacea; on the contrary, the soluble or inorganic form was similar to that of other species. In addition, the total foliar Mg concentration was not high in comparison to other cultivated species. However, its soluble form, chlorophyllic, with a behaviour comparable to the total form was to be expected in plants grown under autochthonous conditions. In summary, there was a moderately antagonistic behaviour, since the inorganic Ca decreased with the presence of K in the rhizosphere while the chlorophyllic Mg underwent the reverse process. 

Keywords:

Cations, forest species, Mediterranean environment

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Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 2
Category: Environment
Pages: 839-842

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