Symptoms :
Symptoms Symptoms occur on all aboveground parts of the vine, particularly on young tissues.
Leaves develop numerous dark brown spots, 1/25 to 1/5 inch (1 to 5 mm) in diameter.
As the centers fall out, lesions take on a “shot-hole” appearance.
Slide 3:
Severe infections curl and distort leaves.
Lesions on shoots are sunken and dark brown with grayish centers.
Berries remain firm, crack and shrivel
affected berries results into loss of fruit quality and good market price.
The center of the lesion begins as a violet color but becomes velvety and whitish gray over time. This coloration gives the pathogen its common name “bird’s eye rot”.
Lesions on leaf :
Lesions on leaf
Lesions on berries :
Lesions on berries
Casual organism :
Casual organism Elsinoe ampelina
Conidia are hyaline, single celled, oblong to ovoid
Ascocarp and ascospores are found
Infection :
Infection Primary – plant debris
Secondary – conidia, ascus and ascocarp.
F.F :
F.F Temperature and moisture are the key components in influencing disease development.
Anthracnose can be very damaging during heavy rainfall and hail.
Management :
Management Sanitation
Prune out and destroy any diseased parts from the vines or vineyard floor.
Resistant var.