DISEASE: Bacterial leaf spot
HOST: Hawaiian ticktrefoil
Hawaiian ticktrefoil with orange-yellow lesions surrounded by broad yellow halos.
![](/sites/default/files/plant_disease/images/0366.jpg)
Bacterial leaf spot | Hawaiian ticktrefoil
DISEASE: Bacterial leaf spot
HOST: Hawaiian ticktrefoil (Desmodium sandwicense)
PATHOGEN: Xanthomonas axonopodis pv. desmodii
PATHOGEN SYNONYM: Xanthomonas campestris pv. desmodii
SOURCE: I. Buddenhagen
DISEASE: Center rot
HOST: Onion
Early symptoms of disease are necrotic, bleached areas on young leaves that typically wilt.
![](/sites/default/files/plant_disease/images/0591.jpg)
Center rot | Onion
DISEASE: Center rot
HOST: Onion (Allium cepa)
PATHOGEN: Pantoea ananatis
SOURCE: R. Gitaitis
DISEASE: Center rot
HOST: Onion
Advanced stage of center rot. The bacterium has moved down from leaves into the bulb.
![](/sites/default/files/plant_disease/images/0592.jpg)
Center rot | Onion
DISEASE: Center rot
HOST: Onion (Allium cepa)
PATHOGEN: Pantoea ananatis
SOURCE: H. Schwartz