Abstract
The objective of this work was to evaluate the productivity and quality of Niagara rosada grape grown without and with plastic cover. Analyzed variables: leaf area (af), sprouting index (Ib) and fertility (If), bunch mass, bunches per plant and yield, bunch quality (Type 1 and 2), total soluble solids (ºBrix). The experiment was carried out in the 2022/2023 harvest, in a 5-year-old vineyard, with spacing of 1.5 between plants by 2.5 m in the row, located in the municipality of Bento Gonçalves/RS, Serra Gaúcha, with two treatments, T1 - environment without cover, T2 - environment with impermeable plastic cover, a randomized block design was used, with 6 plants per treatment. Treatments did not differ for ºBrix, Ib, If, bunch mass, bunches per plant and estimated production per ha. Harvesting the grapes in the plastic cover delayed the harvest by two weeks. As for the qualitative factor, T1 obtained for Type 1 grapes, 81% of the production/ha and treatment T2, 98.5%, grapes that have superior quality. The production of Niagara rosada under the plastic cover did not differ in terms of the production of T1, but presented a higher added value due to the higher % of production of superior quality grapes.
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