Abstract
The response of Encore trees grown on a calcareous soil to different foliar applications to offset iron deficiency. Four treatments were tested: distilled water (control); iron (II) sulphate (500 mg Fe.L−1); sulphuric acid (0.5 mM H2SO4) and Fe-EDDHA (120 mg Fe.L−1). The recovery from iron chlorosis was evaluated with the SPAD apparatus and the values converted to total chlorophyll density. We also evaluated effects of the treatments on some physical and chemical characteristics of the fruit. Chlorophyll density in the leaves, and the total sugar content of the fruits, were greater in all experimental treatments, compared with control, but with no significant differences between treatments. The concentration of citric acid decreased in the treated plants. The greatest diameter and fresh weight of fruits were obtained in the treatment with iron chelate. Foliar applications of iron sulphate or sulphuric acid led to values of these parameters that were intermediate between those of the control and the iron chelate treatments.
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© 1999 Kluwer Academic Publishers
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Pestana, M., Gonçalves, D., De Varennes, A., Faria, E. (1999). The recovery of citrus from iron chlorosis using different foliar applications. Effects on fruit quality. In: Anac, D., Martin-PrÉvel, P. (eds) Improved Crop Quality by Nutrient Management. Developments in Plant and Soil Sciences, vol 86. Springer, Dordrecht. https://doi.org/10.1007/978-0-585-37449-9_22
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DOI: https://doi.org/10.1007/978-0-585-37449-9_22
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