Protective Paint for Crown Gall?

The cold temperature during this winter probably resulted in many trunk splitting or scarring on less winter hardy vines.  I am planning to conduct a quick study on the effect of protective paint on the development of crown gall.  If you have vines with split or scars, especially on the young vines (1-2 years on the ground), please let me know.  It will be one-time application, so, it won’t take much of your time.

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