NUTRIENT EXTRACTION BY CABERNET SAUVIGNON VINES IN THE SERRA GAÚCHA REGION
Keywords:
grapevine, Viris, plant nutrition, mineral nutrientAbstract
This work was carried out during the growing season of 1993/94. ft aimed to assess the total extraction of nutrientes and consequently obtain useful information for fertization prescription. Twelve representative of Cabemet Sauvignow( Viris vinifera L.) vineyards in the Serra Gaúcha region in Rio Grande do Sul, Brazil were chosen. Leaves, clusters and branches were picked, counted, weighed and dried, thus supplying dry matter. This material was analysed and its contents in chemical elements were determined. The total extraction of nutrients was the following in decreasing order: K>N>Ca>Mg>P>S>Cu>Mn>Fe>Zn>B. With regard to the parts of the plant, the total extraction obeyed this decreasing order: blade>berry>branch>petiole>angace. The leaf blade extracted all nutrientes in major quantities, except for K, which the berry extracted most.
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