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RESULTS

(11)

DISEASE: Common scab (Potato scab)

HOST: Potato

Symptoms of common scab vary depending upon the cultivar. The lesions can be shallow or deep, erumpent and corky, and vary in color.

DISEASE: Common scab (Potato scab)

HOST: Potato

White-skinned tuber with sunken and superficial scab lesions.

DISEASE: Common scab (Potato scab)

HOST: Potato

Red-skinned tuber with lesions that usually penetrate less than 1 mm.

DISEASE: Stewart's wilt

HOST: Corn (Maize)

Wilted seedlings resulting from systemic invasion.

DISEASE: Stewart's wilt

HOST: Corn (Maize)

Leaf blight is the dominant symptom of this disease. Lesions begin as gray-green to yellow in color and turn brown in time.

DISEASE: Stewart's wilt

HOST: Corn (Maize)

Flea beetle and scars caused by feeding damage. The beetle is a vector and is an overwintering site for the bacterium.

DISEASE: Stewart's wilt

HOST: Corn (Maize)

Young wilted plant with pale green and yellow streaks on leaves.

DISEASE: Tomato big bud

HOST: Tomato

Characteristic symptoms are swollen, apical stems and stunted leaves. Apical stems are generally thickened and assume a stiff and erect growth habit. Internodes are shortened and flower buds are greatly enlarged.

DISEASE: Tomato big bud

HOST: Tomato

Symptoms are enlarge sepals that do not separate. Flower buds stay green and do not develop into fruit. Leaves are small and chlorotic.