| plantsdb

RESULTS

(11)

DISEASE: Drippy nut disease

HOST: Oak

Ooze from young twig inoculated with Brenneria quercina.

DISEASE: Drippy nut disease

HOST: Oak

Ooze from infected acorn. Copious ooze drips from infected acorns, leaving sticky spots on objects under tree canopy. Infections are associated with insect oviposit wounds.

DISEASE: X-disease (Western X) or buckskin

HOST: Cherry

Comparison of normal, dark cherries (in hand) with infected, immature cherries with less pigmentation.

DISEASE: X-disease (Western X) or buckskin

HOST: Cherry

Healthy cherry shoot (left) and stunted shoot (right).

DISEASE: X-disease (Western X) or buckskin

HOST: Cherry

Infected trees on 'Mazzard' rootstock (right) may live for years, producing fruit with symptoms. Trees on 'Mahaleb' rootstock (left) usually die rapidly in year of infection, about time of fruit ripening.

DISEASE: X-disease (Western X) or buckskin

HOST: Cherry

X-disease causes undersized, yellowish fruit. Diseased branches turn rusty red near end of season. Some defoliation occurs on diseased branches.

DISEASE: X-disease

HOST: Peach

Typical symptoms of diseased tree with yellowing of leaves. Leaves become necrotic and dehisce.

DISEASE: X-disease

HOST: Peach

Late stage of leaf infection. Red-yellow blotches appear after initial water-soaking of leaves. Margins roll upward and leaves appear tattered.

DISEASE: X-disease

HOST: Peach

Stunted foliage (left) with some necrosis and small angular fruit. Healthy foliage and fruit (right).