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’, ‘ES-6-12-28’, ‘ES-4-7-25’, ‘GR-7’ ‘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 ‘Vidalblanc’)andonevmf/era (’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: (Ml)]; 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 protection (M2); vine removed from the trellis, laid down and covered with geotextile fabric (M3) or soil (M4) at three locations in Quebec (Canada) differing in soil type and microclimate conditions. The effects of these methods on annual production, wint...