Published in Scientific Papers. Series B, Horticulture, Vol. LXIV, Issue 1
Written by Alin DOBREI, Eleonora NISTOR, Pavel Dănuţ BABAU, Alina DOBREI
The research was carried out in a family vineyard from Arad County, Buteni village, during 2018-2019, on Cardinal, Victoria, and Merlot, varieties. In the experimental versions, 1 or 2 copper treatments were added in the normal scheme of phytosanitary treatments for diseases and pest control. Copper is essential in grapevine growing, for grapevine downy mildew (Plasmopara viticola) control. The research plots were superior to the control concerning the percentage of annual wood maturation, the canes content in carbohydrates and the buds viability. In the V7 variant were obtained the best results, sprayed with 2.42 kg/ha copper hydroxide (Cu(OH)2) applied three times: before flowering, berry development, respectively after veraison. The second was V5 variant in which was applied 1.61 kg/ha of copper hydroxide (Cu(OH)2) two times: at berry development, and after veraison. In the last place as concern the percentage of wood maturation, the content of the cane in carbohydrates and the buds viability, was the control variant V1 on which was applied a single treatment with copper, respectively 0.807 kg/ha of copper hydroxide (Cu(OH)2) after veraison.
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