After pruning, what is an important maintenance step for Tokay grapevines?

Applying a protective fungicide after pruning Tokay grapevines is crucial as it helps prevent diseases that can affect the plants. Pruning can sometimes expose fresh cuts on the vines, creating openings for pathogens to enter. By using a fungicide, growers can create a protective barrier against fungal infections, which are particularly common in humid environments. This preventative measure is vital in maintaining the health of the vines, as diseases can significantly hinder growth and fruit production.

While other maintenance steps, such as applying fertilizers, adding mulch, or watering, can be beneficial under specific circumstances, they do not directly mitigate the immediate risk of disease following pruning. Use of fungicides is a targeted approach to securing the health of the vine post-pruning, making it an essential practice for growers looking to maintain vigorous and productive grapevines.