Macronutrient accumulation dynamics in apple fruits |
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Authors: | Tomás Casero Estanis Torres Simó Alegre Inmaculada Recasens |
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Institution: | 1. Department of Chemistry, University of Lleida (UdL), Lleida, Spain;2. IRTA Fruitcentre, PCiTAL, Park of Gardeny, Lleida, Spain;3. Department of Horticulture, Botany and Gardening, University of Lleida (UdL), Lleida, Spain |
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Abstract: | In this study, we assessed the macronutrient levels of apple fruits cv. “Golden Smoothee” by monitoring their fruit absorption rates (mg fruit?1 day?1) and accumulation patterns (mg fruit?1) throughout fruit development. Nutrient accumulation was a continuous process throughout the growing season, with patterns of absorption rates varying according to the nutrients concerned. Calcium was chiefly absorbed by the fruit during the first developmental stage, while the greatest absorption rates of other macronutrients occurred later in fruit development (from the end of shoot growth until harvest). From these patterns, it would be desirable to reduce the supply natural calcium (Ca) antagonists, such as potassium (K), ammonium (NH4+), and magnesium (Mg), during the first part of fruit development in order to achieve a good Ca balance with other nutrients and, consequently, an optimum fruit quality. Knowing these nutrient absorption and accumulation patterns is essential for planning optimum nutrient supply and improving their influence on fruit quality. |
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Keywords: | absorption rates apple calcium nutrients accumulation nutrient uptake |
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