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RESULTS

(27)

DISEASE: Bacterial wilt

HOST: Custard apple

Custard apple with brown discoloration of vascular system, typical of wilt disease.

DISEASE: Bacterial wilt

HOST: Custard apple

Sudden death stage of wilt disease.

DISEASE: Bacterial wilt

HOST: Custard apple

Custard apple with brown, dead root tissues with necrotic speckles at the margin between healthy and diseased tissues.

DISEASE: Bois noir disease

HOST: Grape

Bois noir disease may be expressed on one branch while other branches appear healthy. Note trapezoid-shaped leaves.

DISEASE: Bois noir disease

HOST: Grape

Typical symptoms of triangular-trapezoid-shaped, greenish yellow leaves.

DISEASE: Bois noir disease

HOST: Grape

Berries from infected vines are shrunken and low in sugar and have a high acid content, making them unfit for wine production.

DISEASE: Bois noir disease

HOST: Grape

A typical symptom of disease is uneven lignification of infected branches, resulting in a mix of brown and green patches.

DISEASE: Citrus canker

HOST: Citrus (Orange)

Leaf with leaf miner tunnels and numerous cankerlike lesions.

DISEASE: Citrus canker

HOST: Citrus (Orange)

Upper side of leaves with corky, raised lesions surrounded by yellow halos, a late stage of disease. Such infections usually are visible on lower sides of leaves first and soon after on upper sides.