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RESULTS

(23)

DISEASE: Bacterial blight

HOST: Lilac

Blighted twig with shriveled leaves and dark brown streaks on stem.

DISEASE: Bacterial blight

HOST: Lilac

Lilac with blighted twigs.

DISEASE: Bacterial leaf spot

HOST: Larkspur

Infected leaflets with many purplish spots with necrotic centers.

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.

DISEASE: Citrus canker

HOST: Citrus (Orange)

Fruit with corky, raised lesions surrounded by yellow tissues. Cankers on leaves also have yellow halos.

DISEASE: Citrus canker

HOST: Citrus (Orange)

Symptoms of severe disease are defoliation and sparseness of foliage.