Rootstocks

The importance of rootstock in modern viticulture: a pillar of quality grape production. >Fundamentals of Grafting in Viticulture: What is grafting? Definition and objectives. Phylloxera and the need for resistant rootstocks. Advantages of using rootstocks: resistance to pests and diseases, adaptation to different soils and climates, vigor control. Graft incompatibility: causes and consequences. >Classification and Characteristics of Graft Holders: Hybrid rootstocks of Vitis spp.: main species used and their characteristics. Rootstocks of Wine vine natives: use and adaptations. Classification of rootstocks: vigor, phylloxera resistance, nematode resistance, drought tolerance, salinity tolerance, adaptation to calcareous soils. >Selection of the Suitable Graft Holder: Factors to consider when choosing the rootstock: type of soil, climate, scion variety, training system, desired vigor, risks of pests and diseases. Soil analysis: the importance of pH, texture, organic matter and salinity. Climate: the adaptation of the rootstock to the temperature and rainfall conditions of the region. Scion variety: compatibility with the rootstock and influence on plant development. Training system: the choice of rootstock depending on the spacing and height of the plants. >Rootstock management in the vineyard: Soil preparation for planting: acidity correction, fertilization and weed control. Planting of grafted seedlings: spacing, depth and orientation. Care in the first year: irrigation, sprout control and protection against frost. Rootstock training: formation of the trunk and arms of the plant. Production pruning: the influence of the rootstock on bud load and grape quality. >Challenges and Future Perspectives: Adaptation of rootstocks to climate change: selection of genetic materials that are more tolerant to drought and heat. Resistance to new pests and diseases: the development of rootstocks with greater resistance to nematodes and other pathogens. Sustainability in rootstock production: the use of more ecological agricultural practices and the reduction of environmental impact. Research and development of new rootstocks: the search for genetic materials with specific characteristics for different terroirs and grape varieties.