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RESULTS

(25)

DISEASE: Bacterial wilt

HOST: Ginger

Blackening of pith and cortex of rhizome.

DISEASE: Bacterial wilt

HOST: Ginger

Field of wilted ginger plants.

DISEASE: Bacterial wilt

HOST: Ginger

Ginger plants with yellowing, marginal necrosis, and downward curling of infected leaves, in contrast to darker, fully expanded healthy leaves.

DISEASE: Bacterial wilt

HOST: Ginger

Cupping and leaf necrosis precedes wilt and death of plants.

DISEASE: Bacterial wilt

HOST: Ginger

Typical symptoms of bacterial wilt in ginger plantations, Kerala, India.

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.

DISEASE: Citrus canker

HOST: Citrus (Orange)

Yellowish halos are seen around lesions on the upper leaf surface, whereas lesions on the lower surface are more corky in appearance and have sunken centers without halos.

DISEASE: Citrus canker

HOST: Citrus (Orange)

Leaves with necrotic lesions and yellow halos.