What does the term "renewal spurs" refer to in Tokay grapevine pruning?

The term "renewal spurs" refers specifically to short canes that are intentionally left on the vine during the pruning process to encourage new growth for future fruiting. These spurs are critical because they contain buds that will develop into shoots in the upcoming growing season, ultimately leading to the production of fruit. The focus on managing these spurs allows for effective vine management and ensures that the grapevine has a continual cycle of fruit-bearing growth.

In the context of grapevine management, pruning strategies like leaving renewal spurs are important for maintaining the health of the vine and optimizing fruit quality. By strategically selecting which spurs to keep, growers can influence the overall yield and quality of grapes produced in subsequent seasons. This practice is essential in varietals such as Tokay, where managing fruit production is key to the quality of the wine produced.