Abstract— Apple leaves of cultivars Topaz and Golden delicious, organically grown upon spindly shaped apple trees and grafted at 5 dwarfing rootstocks, were analyzed for 42 main and trace elements. Spraying a Cu-oxychloride particle suspension plus an adherent as a fungicide, induced some leaf concentration changes with respect to untreated control groups, though inputs of other elements from spraying were negligible. Cu- treatment tended to increase concentrations of Fe, Si and J, and to decrease Zn, Co and Cd in the leaves, because these effects appeared for both cultivars at all rootstocks. Other changes might be rather due to fertilization regime and climate.
Keywords— apple leaves, Cu-spraying, trace elements, year-to-year variation.
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