Produção de mudas de videira cv. Bordô/Paulsen 1103 pela enxertia de mesa com estratificação

Abstract

The use of appropriate practices in the implementation of a vineyard, especially the use of grafted cuttings with good health, is an essential factor for successful viticulture. The objective of this study was to test stratification temperature, use of idole-butiric acid (IBA), type and period of grafting, for the propagation of vines, cultivar Bordô/Paulsen 1103, by bench grafting cuttings The use of appropriate practices in the implementation of a vineyard, especially the use of grafted cuttings with good health, is an essential factor for successful viticulture. The objective of this study was to test stratification temperature, use of idole-butiric acid (IBA), type and period of grafting, for the propagation of vines, cultivar Bordô/Paulsen 1103, by bench grafting cuttings with stratification. In the first and second experiment, the cuttings of the rootstock were treated with IBA before and after stratification, respectively. Both treatments were conducted in a randomized block in a factorial 3 x 2 (stratification temperature: 19º, 24º and 29ºC) x grafting type: manual cleft grafting and “Omega”), with four replications and ten units of observation (grafted cuttings). The third experiment was performed in randomized blocks, in a 4 x 2 factorial design (different period of grafting: May, June, July, and August x stratification temperature: 19 and 24°C), with four replications and 20 units of observation. The technique of grafting was manual cleft, with 2000 mg L-1 of IBA after stratification. Cleft grafting had a higher percentage of viable grafted cuttings than the “omega” technique; We recommend application of IBA after stratification; temperatures of 19 and 24 °C favored the survival of the graft; while July was the most recommended period for bench grafting with stratification.