DISEASE: Bacterial leaf and stem necrosis
HOST: Watermelon
Seedlings with necrotic leaves and water-soaked stems.
Bacterial leaf and stem necrosis | Watermelon
DISEASE: Bacterial leaf and stem necrosis
HOST: Watermelon (Citrullus lanatus)
PATHOGEN: Pseudomonas viridiflava
SOURCE: Y. Aysan
DISEASE: Blossom blast
HOST: Apple
Many dead, shriveled flowers and young shoots. It differs from fire blight, with infections being relatively localized with the appearance of being "blasted".
Blossom blast | Apple
DISEASE: Blossom blast
HOST: Apple (Malus domestica)
PATHOGEN: Pseudomonas syringae pv. syringae
SOURCE: M. Schroth
DISEASE: Lethal yellowing/scorch
HOST: Beet
Blue-green sharpshooter (Graphocephala atropunctata) transmits Xylella fastidiosa and has a large host range, including palms, grasses, and grapes.
Lethal yellowing/scorch | Beet
DISEASE: Lethal yellowing/scorch
HOST: Beet (Beta vulgaris)
PATHOGEN: Xylella fastidiosa
SOURCE: A. Purcell, M. Davis