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A synthetic product is used to help overcome dormancy of the buds of vines in tropical and sub-tropical climate, but the product currently available in Brazil has the highest level of toxicity to humans. The objective was to study some alternatives to break the dormancy of the buds of the rootstock vine ‘SO4’. The sprayed treatments were: T1 = water (control); T2 = hydrogen cyanamide (3%); T3 = garlic (33%) and; T4 = Hydrogen Peroxide – H2O2 – (3%). The cuttings were immersed in a indole acetic acid (IAA) of 5 ppm for 15 seconds and placed in plastic bags (19 cm× 5 cm× 8 cm) with 50% sand + 50% commercial substrate (H. Decker®) . After 04 months, were evaluated: percentage of live cuttings, aerial part height (cm), length of roots (cm) and dry matter of aerial parts and root (g). Regarding the roots, root dry weight and dry matter of aerial parts, stood out the cuttings treated with H2O2 at a concentration of 3% (T4). In the present work conditions, preliminarily concluded that H2O2 at a concentration of 3% can assist in breaking dormancy of the buds of the roostock vine ‘SO4’

Dormancy break with garlic extract and hydrogen peroxide in rootstock vine ‘SO4’