Impact of canopy management on fruit quality of wine grapes under northern dry zone of Karnataka

Abstract

The study was conducted to know the “Impact of canopy management on fruit quality of wine grapes under northern dry zone of Karnataka” at division of fruit science, UHS, Bagalkot during 2015-16. For the study, varieties and cane regulation were considered as main and sub treatments respectively. The study showed significant differences within the varieties in quality parameters such as, TSS to acid ratio (36.92) and non-reducing sugars (1.92 %) were maximum in Shiraz. Grenache Blanc recorded the maximum per cent of titrable acidity (0.61 %). Significantly, the highest juice content of the berry (42.75 ml/50g) was recorded in Medika. Among the cane regulation treatments, significant differences were found between the different levels of cane regulation with respect to quality parameters. Vines with 25 canes, recorded significantly the maximum content of TSS (22.120 Brix), juice content of berry (43.22 ml/50g), total sugar (19.39 %) and reducing sugar (17.50 %).Hence, the cane regulation is essential form of thinning in vineyard operation and considered as a technique which could lead to tremendous improvement in quality parameters of wine grapes and helpful for quality wine production.