Times of prunning and budbreaking in Niagara Rosada vines
DOI:
https://doi.org/10.5433/1679-0359.2007v28n2p201Keywords:
Vitis spp, hydrogen cyanamide, plant growth regulatorAbstract
This research work had as the aim of verifying the efficiency of five combined concentrations of hydrogen cyanamide (CH) in four consecutive pruning times of sprouting vine and harvest anticipation of ‘Niagara Rosada’ in the county of Ponta Grossa, PR. The experiment had a factorial design (4 x 5) with 3 replications and 3 plants per parcel. The analysis were sprouting percentage, number of clusters per plant, rate of production and average weight per cluster. The effect of CH was shown only at the first pruned time when sprouting but the occurrence of frosting decreased the yield. The delay in the process of pruning showed a higher number of cluster per plant, which consequently resulted in yield increase.
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