| plantsdb

RESULTS

(11)

DISEASE: Angular leaf spot

HOST: Tobacco

Leaf with light brown, angular spots. The difference between this disease and wildfire of tobacco is that wildfire is caused by a strain that produces tabtoxin. It causes conspicuous halos around lesions and large parts of a leaf may turn yellow .

DISEASE: Angular leaf spot

HOST: Tobacco

Yellowing of adjacent tissues occur as spots age (midseason). It causes conspicuous halos around lesions. Large parts of a leaf may turn yellow.

DISEASE: Angular leaf spot

HOST: Tobacco

Severely diseased leaf with extensive yellowing.

DISEASE: Bacterial hyperplastic canker

HOST: Almond

Diseased tree with multiple cankers. Margins of cankers are rough, soft, cheesy, dark brown, and have scalloped water-soaked spots that turn brown. Multiple cankers may girdle and kill small twigs.

DISEASE: Bacterial leaf spot

HOST: Alfalfa

Stems with necrotic lesions.

DISEASE: Bacterial leaf spot

HOST: Alfalfa

Leaves with brown necrotic spots. Stems have water-soaked spots.

DISEASE: Bacterial leaf spot

HOST: Alfalfa

Leaves with both water-soaked and necrotic spots.

DISEASE: Bacterial leaf spot

HOST: Alfalfa

Leaves with necrotic, brownish paperlike areas.

DISEASE: Wildfire (Angular leaf spot)

HOST: Tobacco

Characteristic symptoms are necrotic, brown spots with angular margins surrounded by distinct yellow halos. The halos are caused by the production of tabtoxin.