Abstract
The influence of foliar fertilization with Zn, B, P, Ca (Phosyn programmeme) on yield, quality and quantity was studied on cvs. ‘Elstar’, ‘Jonagold’ and ‘Golden Delicious’. Foliar fertilization improved the yield increase up to 30% and the share of the first class. The quality was determined by the contents of sugars (glucose, fructose and sucrose) and alcohol sugar sorbitol and organic acids (citric, malic, shikimic and fumaric) with HPLC (High Performance Liquid Chromatography) analyses and contents of mineral elements (Ca, K, Mg, N) in the fruits of apple trees. Contents of individual sugars and sorbitol of all cultivars were higher in Phosyn treatment than the control. Also, citric and malic acid contents were higher, whereas differences in shikimic and fumaric acids were less. Fruit mineral elements showed that foliar fertilization caused better quantities and relations among elements of individual cultivars and higher contents of soluble solids with regard to control treatment. Complex foliar fertilization had positive impact on quantity and quality of fruits at different cultivars of apple tree.
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© 1999 Kluwer Academic Publishers
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Štampar, F., Hudina, M., Dolenc, K., Usenik, V. (1999). Influence of foliar fertilization on yield quantity and quality of apple (Malus domestica borkh.). 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_21
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DOI: https://doi.org/10.1007/978-0-585-37449-9_21
Publisher Name: Springer, Dordrecht
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