BLACK CHAFF (BACTERIAL LEAF STREAK)
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Barley

SOURCE:
S. Thomson
DISEASE:
Black chaff (Bacterial leaf streak)
HOST:
Barley
(Hordeum vulgare)
Leaf with linear, water-soaked lesions that turn necrotic and brown. Flakes of dry bacterial exudate are apparent on the lesions. The pathogen also causes black glume of barley.
PATHOGEN:
Xanthomonas translucens pv. undulosa