Abstract
"The experiments took place in the village Hotarele (Giurgiu County) comprising a vineyard area of 1.5 ha, with the Muscat Ottonel variety. From batches treated with copper sulphate with a concentration of 1.5% before the fall of the leaves and 3% after the fall of the leaves, samples were taken and their evolution was constantly monitored before and after the cold season. The buds and wood viability at negative temperatures of -15, -18, -21°C and the content in reserve substances were analyzed. It was found that the vines treated with copper sulfate have a higher viability, therefore a better resistance to frost as well as biochemical characteristics - higher content of reserve substances, which support this resistance."
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