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World Encyclopedia of Plant Bacterial Diseases
VARNISH SPOT
|
Lettuce
SOURCE:
K. Ohata, M. Goto
DISEASE:
Varnish spot
HOST:
Lettuce
(
Lactuca sativa
)
Advanced stage of disease with large, brown necrotic areas. They most often are along veins. Outermost leaves of the head usually are not affected.
PATHOGEN:
Pseudomonas cichorii