Hari from India writes
Manzate Pro-Stick T and O Fungicide is not labeled for use on grapes at any stage. We do offer Mancozeb Floweable with Zinc Concentrate which is a broad spectrum fungicide labeled for use on grapes. Please refer to the product label for specific mixing and timing instructions on application. It can be applied when new shoots are 1/2 - 1 1/2 inches long and reapplication when shoots are 3-5 inches long. It can then be applied in 7-10 intervals until fruit is set or 66 days before harvest.
Answer last updated on: 08/31/2018