If mildew is a problem, maintaining mildew protection until terminal shoot growth hardens off will reduce the amount of mildew that overwinters in the buds. This will reduce the severity of mildew next year. Re-growth late in the season may require additional protection to prevent heavy overwintering. 2 Use higher rates and shorter intervals if bitter rot pressure is high. While beneifits for summer disease control are recognized, ratings for rot diseases are still under evaluation.
Caution is advised on the use of the materials where bitter rot pressure is heavy.
Pheromone traps may be used to determine periods of male activity. These traps should be hung 4 feet above the ground. Sprays at fifth and sixth cover periods are more important than earlier sprays. Observe label pre-harvest intervals. 5 For effective control of JB, apply before adult activity begins.