Anticipated production of âNiagara Rosadaâ grape in the region of Lavras, Minas Gerais state / AntecipaÃÃo da produÃÃo da videira Niagara Rosada na regiÃo de Lavras, MG

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

The premature production of âNiagara Rosadaâ grapes may be an excellent choice for the winegrowers of Lavras, MG, however, it is necessary studies that aim to surpass the difficulties found difficulties when undergoes the vine a pruning before the plant to complete the necessary rest. Therefore in attempt of to improve this situation, the objective of the preset work was to evaluate the irrigation and pruning dates for fruit set aiming the anticipated production of the âNiagara Rosadaâ grape in the municipality of Lavras, MG, in order to produce grapes with quality without crop season. The essays took place in a six-year-old commercial plantation grafted on âRiparia do Traviuâ, carried in the system of vertical of bilateral string, spaced 3,0x2,0m (lines x plants). The following prune dates were studied: 05.03.2004; 05.17.2004; 05.31.2004; 06.15.2004; 06.29.2004; 07.13.2004 and traditional prunes on 07.20.2004 and 08.03.2004. The experimental design was random blocks, with 16 treatments and four repetitions in 8x2 factorial outline (eight prune dates with or without irrigation), each parcel composed of four plants. Phenological, productive and qualitative characteristics were evaluated, through four experiments. The use of irrigation had no influence on the sprouting of the buds, which showed more fertility from June on. The vegetative development was increased in proportion to the advance of the prune dates, this being superior to the general average of the irrigated treatments. The duration of the cycle was 158, 155, 144 and 139 days for pruning carried out in May, June, July and August respectively. The thermal demands of plants were 1178 GD to pruning carried out in May, 1300 GD for pruning carried out in June, 1271 GD for pruning carried out in July and 1342 GD for pruning carried out in August, being used the temperature-base of 12ÂC. The largest productions, with more numerous and heavier clusters, occurred in the later prunes, being insignificant the production of the pruned plants in May. Plants pruned in June were harvested in November, receiving larger remuneration and more profits. The irrigation did not influence the evaluated characteristics. The contents of the soluble solids got in every date are adequate to the standards of quality of the cultivar (>14Â Brix) with reduction of the general average of the irrigated treatments. The pH increased in proportion as the prune dates lengthened. For titratable acidity the irrigated fruits presented more acidity, but the acidity was reduced meanwhile the prune dates got forward, having no relation between the two factors. The volume and the income of the juice were favored by irrigation and later prunes

ASSUNTO(S)

nenhuma abaixo nenhuma abaixo poda irrigation irrigaÃÃo phenology fenologia pruning fitotecnia nenhuma abaixo

ACESSO AO ARTIGO

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