Published in Scientific Papers. Series B, Horticulture, Vol. LXIV, Issue 1
Written by Claudia NICOLA, Alina FLOREA, Emil CHIȚU, Mădălina BUTAC
The aim of the present study is to evaluate the chemical composition of chokeberry fruits (Aronia melanocarpa (Michx.) Elliott, variety 'Nero'), specifically total anthocyanins, total polyphenols, vitamin C and malic acid under the influence of fertilization applied to soil, foliar, and combined (soil + foliar). In the 'Nero' variety, soil fertilization and foliar fertilization were applied, respectively, with the graduations: a1 - mineral fertilization in the soil with the quantities recommended by the SMART program! Fertilizer Management software, a2 - application of Biozyme foliar fertilizer in a concentration of 0.1% and a3- soil mineral fertilizers in combination with foliar fertilizer (graduations a1 + a2). Between 2017 and 2019, in the experimental plot, the following doses and forms of mineral fertilizers were applied to the soil, adapted to the species requirements: 74.10 kg/ha MAP (ammonium monophosphate), 125.7 kg/ha Magnisal (magnesium nitrate), 122.7 kg/ha ammonium nitrate and 196.5 kg/ha Multi K (potassium nitrate). Chemical analyzes show a high content of antioxidants in chokeberry fruits. The high anthocyanin content (3535 mg kg fresh fruit, as well as total polyphenols (83128 mg/kg fresh fruit), vitamin C (over 97 mg/100 g fresh fruit), and malic acid (0.72 g/100 g fruit) emphasizes the pharmaceutical properties of the chokeberry species.
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