SciELO - Scientific Electronic Library Online

vol.33 número2Reaction of peach rootstocks to Meloidogyne incognita índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




Links relacionados


Revista Brasileira de Fruticultura

versión impresa ISSN 0100-2945


COLETTI, Roberto; NIENOW, Alexandre Augusto  y  CALVETE, Eunice Oliveira. Dormancy breaking of blueberries cultivars in a protected environment with hydrogen cyanamide and mineral oil. Rev. Bras. Frutic. [online]. 2011, vol.33, n.2, pp.685-690.  Epub 27-Mayo-2011. ISSN 0100-2945.

Blueberry require chilling hours accumulation in the fall/winter. Insufficient cold accumulation can cause deficient and desuniform sprouting and blooming, with negative consequences on yield. The research conducted in Passo Fundo University, state of Rio Grande do Sul, had the objective of studying the dormancy breaking of blueberries cultivars (Georgiagem, Climax and Aliceblue) under greenhouse conditions, submitted to treatments with hydrogen cyanamide (HC) at the doses of 0.52% and 1.04% (1% and 2% of the commercial product Dormex®), with the addition of 0.5% of mineral oil (MO), and compare them to a control, without hydrogen cyanamide treatment. Planting was made in December 2005, at a 0.7 m x 2.0 m space, with drip irrigation. The plants were evaluated in the third vegetative cycle and first production. The results showed that chemical induction of dormancy breaking at the end of July shortened and standardized flowering, and in the cultivars Georgiagem and Climax anticipated bud break. The use of HC at the concentrations of 0.52% and 1.04%, in combination with 0.5% of MO, did not affect the sprouting percentage, but reduced the yield, mainly the highest concentration, with evidence of phytotoxic effects.

Palabras clave : Vaccinium sp.; sprouting; blooming; fruit production.

        · resumen en Portugués     · texto en Portugués     · Portugués ( pdf epdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons