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Revista Brasileira de Fruticultura

Print version ISSN 0100-2945On-line version ISSN 1806-9967


SIEBENEICHLER, SUSANA CRISTINE; MONNERAT, PEDRO HENRIQUE; CARVALHO, ALMY JUNIOR CORDEIRO DE  and  SILVA, JOSÉ ACCÁCIO DA. Mineral composition of the leaf in pineapple: effect of the part of the analysed leaf. Rev. Bras. Frutic. [online]. 2002, vol.24, n.1, pp.194-198. ISSN 0100-2945.

The standardization of the sampling for foliar analysis in pineapple is important to obtain reliable results. In this aspect this work seeks to identify the variation of the mineral composition of pineapple leaf, in plants developed in sandy soil, without irrigation. The leaves were collected, cleaned and divided in 4 parts: non-chlorophyllated, basal, medium and apical. After the drying, the samples were weighted, digested, and analyzed by the appropriate methodology for each nutrient. A great variation in the concentration of the nutrients was found along the pineapple leaf. A reliable comparison of the analysis can be established between the whole leaf and the chlorophyllated portion of the leaf; the same does not apply to the non-chlorophyllated portion of the same leaf. This paper confirms the need of the standardization of leaf sampling for mineral composition evaluation.

Keywords : Annanas comosus; leaf nutrient status; horticulture; pineapple.

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