As we head into the home stretch of 2014 peanut production, most farmers are working diligently to mange and control leaf spot and white mold in their peanuts. Many farmers are familiar with Early and Late leaf spot and the occasional chemical related spotting on the leaves of their peanuts. Occasionally, however, we see Pepper Spot showing up in our peanut crop as well, and its appearance sometimes causes concern for growers who are not familiar with the disease.
Pepper Spot (photo 2) is caused by Leptosphaerulina crassiasca, the same fungus that is responsible for Peanut Leaf Scorch. It is not unusual to see Pepper Spot show up late in the growing season. We had some leaf scorch in fields earlier this growing season. The good news is that Pepper Spot is generally a weak pathogen and as long as a farmer is following a good leaf spot spray program, losses are usually negligible from this disease. (Photo 3)
For more information on Pepper Spot and Leaf Scorch contact your UF/IFAS Extension office and see the following articles: