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