![Symptoms of Alternaria leaf blight first appear on older leaves as small, dark spots that gradually enlarge with concentric rings. Brassica crops, including broccoli, collard and kale, are all susceptible to this plant disease.](https://secure.caes.uga.edu/news/multimedia/images/4298/alternarialeafblightforweb.jpg)
Alternaria blight and head rot
A new multistate project will bring together researchers from the University of Georgia and partner universities to fight Alternaria leaf blight and head rot in broccoli, a plant disease that thrives in warm temperatures and humidity.