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RESULTS

(15)

DISEASE: Bacterial blight

HOST: Hazelnut

Diseased young tree with discoloration of the cambium. Dieback of young twigs and branches is characteristic. Other typical symptoms are bud and twig necrosis and small, angular or round, water-soaked leaf spots.

DISEASE: Bacterial blight

HOST: Rice

Gradation in blight symptoms. The disease begins as water-soaked streaks on leaves, which increase in length and width, becoming yellow and then white.

DISEASE: Bacterial blight

HOST: Rice

Yellow leaf stripe that later turns white.

DISEASE: Bacterial blight

HOST: Rice

Infected leaves have grayish white lesions with wavy margins.

DISEASE: Bacterial blight

HOST: Rice

Gray leaf lesions typical of bacterial blight.

DISEASE: Bacterial blight

HOST: Rice

Paddy of dead seedlings with white leaves, characteristic of kresek stage of disease.

DISEASE: Bacterial blight

HOST: Rice

The disease causes rolling of leaf tips. In the acute stage, symptoms are wilting and yellowing of leaves, followed by death.

DISEASE: Bois noir disease

HOST: Grape

Severe symptoms of triangular-trapezoid-shaped leaves with desiccated appearance.

DISEASE: Bois noir disease

HOST: Grape

Leaves with disease symptoms identical to flavescence doree, a yellows disease caused by a different phytoplasma. The latter has a slightly different host range and is transmitted by a leafhopper.