Growers who have experienced significant losses from diseases should review diagnosis and control information. Maximum density plantings may minimize losses. Maintain a regular fungicide program in plant beds. If blights get started in plant beds, control will be more difficult and expensive later in production fields. Beetles have been prevalent in some areas this season.
Several insecticides provide good control.
Maximum density plantings may minimize losses. There is also good resistance to other diseases. Scab and powdery mildew usually are next in importance. Polyethylene mulch is important in many areas of Pennsylvania. When necessary, fungicides can be used later in the season.