Evaluation of selected cider apple (Malus domestica Borkh.) cultivars grown in Ontario. I. Horticultural attributes

Twenty-eight apple cultivars were selected for their potential for hard cider production in Ontario. An experiment was conducted to evaluate their horticultural potential in the province. After being planted in spring 2015, the trees were evaluated annually for their survival, tree height and spread, trunk growth, flowering dates, flower counts, fruit per tree, pre-harvest drop, crop load, fruit weight, fruit firmness, juicing extraction efficiency, and harvest dates. These horticultural attributes were sufficient to discriminate between cultivars. Additional exploratory analyses indicated a relationship between horticultural attributes and a cultivar's origin, with British cider cultivars blooming the latest, American cider apples producing the most juice, and French cider cultivars having the highest pre- harvest fruit drop. Cultivars in this study that show promise for continued research in Ontario include Binet Rouge, Bramley's Seedling, Breakwell, Bulmer's Norman, Calville Blanc d'Hiver, Cline Russet, Cox Orange Pippin, Crimson Crisp (R), Dabinett, Enterprise, Esopus Spitzenberg, Golden Russet, GoldRush, Medaille d'Or, Porter's Perfection, and Stoke Red.