TY - JOUR T1 - Effects of Chilling and Garlic Extract on Bud Dormancy Release in Cabernet Sauvignon Grapevine Cuttings JF - American Journal of Enology and Viticulture JO - Am J Enol Vitic. SP - 402 LP - 404 DO - 10.5344/ajev.2007.58.3.402 VL - 58 IS - 3 AU - Renato Vasconcelos Botelho AU - Alexandre Pozzobom Pavanello AU - Erasmo José Paioli Pires AU - Maurilo Monteiro Terra AU - Marcelo Marques Lopes Müller Y1 - 2007/09/01 UR - http://www.ajevonline.org/content/58/3/402.abstract N2 - Chemical treatments to break bud dormancy are necessary in vineyards that experience mild winters. Cuttings with a single bud were sprayed with 1.5 or 3.0% garlic extract or 1.5% hydrogen cyanamide. The controls were treated with distilled water. Three lots of canes were submitted to 0, 168, 336, or 508 chilling hr (≤6.0°C), respectively, before spraying. All treatments improved and advanced bud sprouting over the control. The most effective treatment for bud dormancy release was 1.5% H2CN2, with up to 80% bud sprouting after 35 days, even for unchilled cuttings. Garlic extract also promoted bud sprouting, attaining greater than 70% budbreak after 35 days for cuttings chilled for 168, 336, and 504 hr. The chilling requirement for Cabernet Sauvignon appears to be close to 336 hr. ER -