Desenvolvimento de videira `Niagara Rosada´ podada em diferentes épocas / Development of the \ Niagara Rosada\ vine pruned at different seasons

AUTOR(ES)

Lourival Carmo Monaco Neto

FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

30/08/2012

RESUMO

The importance of the \ Niagara Rosada\" crop is major in several regions, especially in the state of São Paulo. In the production of this vine tree the use of pruning is essential, which can occur in several seasons. With that in mind, this study has as objective to compare \ Niagara Rosada\ vine tree\ s development under different pruning seasons by analyzing characteristics as the length of the branch, average branch growth velocity, duration in days of the production cycle and degreedays (DD). The adopted pruning seasons were the winter pruning, being done in 08/04/2010, and the summer pruning, being done 01/28/2011. As experimental plot were use 4 plants, with 7 or 8 branches each, with the total of 30 branches. To analyze the results was used the Tukey test, comparing the treatments in the different periods of the production cycle (Pruning to Harvest, Sprout to Harvest, Pruning to Sprout, Sprout to Flowering, Flowering to Early Ripening and Early Ripening to Harvest. There was a significant difference between the treatments in all the comparisons. For the length of the branches, the winter pruning showed bigger branches in all the periods than the length of the summer pruning. As for the average branch velocity, it was superior in all the periods in the winter pruning. When considering the duration in days of the periods of the production cycle there was, in the beginning, a longer duration in the winter pruning an a longer duration in the end of the cycle for the summer pruning. When considering the total duration both treatments presented almost the same number. Finally, for the degree-days, the winter pruning showed a bigger rate in all the cycle, except in the Flowering to Early Ripening period, in which the summer pruning showed a bigger rate.

ASSUNTO(S)

degree-days desenvolvimento vegetal fenologia poda - Época summer pruning uva vitis winter pruning

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