How to Treat Fungus on Scuppernong Vines

Make the first fungicide application just before the scuppernong blooms in the spring. Use a fungicide with mancozeb as the active ingredient. Apply 2 to 3 lbs. per acre.

Apply a fungicide containing myclobutanil: a-butyl-a (4-chlorophenyl)-1H-1, 2, 4 triazole-10-propanenitrile just after the scuppernong blooms. This is one of the most important applications of the season, according to scientists with Michigan State University. Apply 1 to 2 oz. per acre and thoroughly wet all parts of the plant with the fungicide. Reapply the fungicide every two weeks.

Spray the scuppernongs with a fungicide with Captan 50-WP as the active ingredient six to eight weeks before harvest. Continue the applications every week to 10 days during rainy weather. Use 3 lbs. per acre, according to the instruction on the label. You may need to adjust the timing according to the weather.

Providing adequate air circulation around the scuppernong and keeping the soil clean of plant debris prevents fungal disease. Water the scuppernong at the soil level rather than overhead. Remove mummy berries after harvest, prune dead wood and rake the soil clean.