Rootstocks Impact Yield, Fruit Composition, Nutrient Deficiencies, and Winter Survival of Hybrid Cultivars in Eastern Canada

Grafting cold-hardy hybrid grapevines may influence their attributes under different pedoclimatic conditions and also contribute to cold-hardiness, plant physiology, affect yield fruit composition. In a six-year study, we evaluated bud survival, development, nutrient deficiencies, yield, composition for three grape varieties: Frontenac, Frontenac blanc, Marquette. The varieties were grafted on four rootstocks: 3309C, SO4, Riparia Gloire, 101-14. final combinations own-rooted. research period indicated that hybrids affected differently by each rootstock. Magnesium deficiency was lower blanc compared with own-rooted vines, but survival grapevine development not Moreover, results related components showed there are significant differences between rootstocks vines. the least variety Marquette, where only cluster weight berry impacted. Overall, two varietals, observed greater maturity fruits of vines 101-14 3309C Marquette differently, lowest SO4. This study demonstrates hybrids, highlighting potential eastern North American conditions.