Phenology and thermal demand of ‘Isabel’ and ‘Rubea’ grapevines on different rootstocks in North of Paraná
DOI:
https://doi.org/10.5433/1679-0359.2008v29n2p283Keywords:
Grape, Degree-days, Grape juice, Vitis labrusca.Abstract
The aim of this research was to characterize the phenological behavior, as well as to determine the thermal demand of ‘Isabel’ (Vitis labrusca) and ‘Rubea’ (V. labrusca x (V. labrusca x V. vinifera) x V. labrusca) grapevines for grape juices in the North of Paraná. The trial was carried out in a experimental vineyard located at Technology Center of Corol Cooperative, located at Rolândia, PR. The vineyard was established in July, 2002 and grafted in 2003. The design was used as the statistical model with four replications in a factorial 2x3 project (2 grapevines and 3 rootstocks). The plants were cultivated in GDC (Geneva Double Curtain) system, in 2.0 x 3.5 m spacing. To evaluate the duration of each phonological stage (in days) four spurs were marked per plot, where was evaluated in days until the bud swell, to beginning of shot growth, to visible cluser, to flowering; to early ripening and to harvest. The thermal demand was calculated using the degree-days sum from pruning to harvest, as well for each subperiod. The results show that the duration of the pruning to harvest for grape ‘Isabel’ grafted on rootstocks IAC 766 Campinas, IAC 572 Jales and 420-A was 148, 142 and 167 days, respectively and the thermal demand to this combination was 1,260.9; 1,260.9 and 1,541.6 GD, respectively. For ‘Rubea’ grafted on rootstocks IAC 766 Campinas, IAC 572 Jales and 420-A the cycle was 134, 134 and 132 days, respectively and the thermal demand from pruning to harvest for even combinations was 1,003.8; 1,003.8 and 999.5 GD, respectively.
Downloads
Published
How to Cite
Issue
Section
License
Semina: Ciências Agrárias adopts the CC-BY-NC license for its publications, the copyright being held by the author, in cases of republication we recommend that authors indicate first publication in this journal.
This license allows you to copy and redistribute the material in any medium or format, remix, transform and develop the material, as long as it is not for commercial purposes. And due credit must be given to the creator.
The opinions expressed by the authors of the articles are their sole responsibility.
The magazine reserves the right to make normative, orthographic and grammatical changes to the originals in order to maintain the cultured standard of the language and the credibility of the vehicle. However, it will respect the writing style of the authors. Changes, corrections or suggestions of a conceptual nature will be sent to the authors when necessary.