Cercospora leaf spots on bean plants can show up in different ways, but they are almost always a sign of problems. The disease shows up in a variety of ways, with the most common being a leaf spot that looks sunburned. Treatments of cercospora involve using fungicides that include tetraconazole, flutriafol, axoxystrobin and difenconazole. Preventative measures such as removing old bean debris as soon as possible is also highly recommended. Practicing one- to two-year crop rotations will help so long as the rotations don’t include plants susceptible to the same pathogen.
- Cercospora leaf spots in beans are important for identification by the gardener. These leaf spots can cause a significant amount of damage to the plant.
- The spots could be cause for concern in the garden. These spots look like they were sun exposed during the day, but aren’t sun burns.
- Spot treatment can be used to rectify the damage done on the leaves. Gardeners are working to correct the damage that has taken place.
“If your crop has experienced cercospora leaf spot, it’s important to take steps to prevent it in the future instead of relying on fungicide to beat it back year after year.”