The Effects of Different Cultural and Environmental Factors on Grapevine Growth, Winter Hardiness and Performance, in Three Locations, in Canada

Abstract

Twenty grapevine genotype of diverse hybrid origin ('Chancellor', 'Delisle', 'Hibernal', 'Sabrevois', 'Kay Gray', 'Lucie Kuhlmann', 'Michurinetz', 'Okanagan Riesling', 'Prairie Star', 'St. Croix', 'St. Pepin', 'Seyval noir', 'Seyval blanc', 'SV-18-307', 'Vandal-Cliche' and 'Vidal blanc') and one vinifera ('Siegerrebe') were evaluated under different winter protection methods where twelve hardy and semi-hardy genotypes received 3 treatments: seven tender genotypes received one treatment and only one tender genotype received 2 treatments [vines without protection: (M1)]; pinning half of the canes to the ground allowing for natural snow cover protection and the remaining canes left attached to the trellis wires without pro-