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RESULTS

(25)

DISEASE: Bacterial stalk and top rot

HOST: Sorghum

Row of severely diseased plants.

DISEASE: Bacterial stalk and top rot

HOST: Sorghum

Water-soaking and necrosis of severely diseased leaves.

DISEASE: Bacterial stripe

HOST: Grass

Sudangrass with dark reddish stripes on leaves.

DISEASE: Crown gall

HOST: Cherry

Crown gall of cherry.

DISEASE: X-disease (Western X) or buckskin

HOST: Cherry

Comparison of normal, dark cherries (in hand) with infected, immature cherries with less pigmentation.

DISEASE: X-disease (Western X) or buckskin

HOST: Cherry

Healthy cherry shoot (left) and stunted shoot (right).

DISEASE: X-disease (Western X) or buckskin

HOST: Cherry

Infected trees on 'Mazzard' rootstock (right) may live for years, producing fruit with symptoms. Trees on 'Mahaleb' rootstock (left) usually die rapidly in year of infection, about time of fruit ripening.