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Mineral content of nectarines fruits in relation to some fertilization practices

Published in Scientific Papers. Series B. Horticulture, Vol. LVI
Written by Elena DELIAN, Lenuţa CHIRA, Liana DUMITRU, Liliana BĂDULESCU, Adrian CHIRA, Alexandra PETCUCI

Fruits nutritional quality at the harvest moment and their storage capacity is directly or indirectly affected by multiple factors, including fertilization practices. The aim of this study was to evaluate soil organic and chemical fertilization, also foliar spray treatments on fruits mineral content of two nectarines [Prunus persica L. Batsch var. nectarina (Ait) Maxim] cultivars: Cora and Delta. The following fertilization treatments were applied: V1. Control: No fertilization; V2. Organic fertilizer in mid-May; V3 and V4 Chemical fertilizer in the first part of June; for variant 4 there were applied also two treatments with foliar fertilizer in the second part of May and early June. The experiment was carried out in 2008 at the Research and Development Fruit Growing Station ConstanGa, Romania. Nectarine fruits were picked at commercial maturity stage from each tree of various replicates and mineral content was determined at the Plant Physiology Laboratory of the Faculty of Horticulture Bucharest, by using an Inductively Coupled Plasma Spectroscopy (ICP-AES IRIS INTREPID). The results were expressed in mg 100 g-1 fresh weight. Our preliminary results indicated a change in the fruits minerals composition in relation with the applied fertilizer, with significantly differences among the treatments. The organic fertilization and foliar sprays impact were found to be the most significant ones for all mineral elements studied in this work.

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