Dagnt Erikson A detailed histological study was made of the necrotic areas induced in the stem of a resistant and a susceptible variety of plum as the result of artificial inoculations of Ps. mors-

By Abaigeal Quinn, eHow Contributor Canker is a fungal or bacterial disease that attacks woody plants and can seriously harm plum trees. The appearance of canker disease during the autumn first app

SYMPTOMS AND SIGNS Symptoms are most obvious in spring and include limb dieback with rough cankers and amber-colored gum. There may also be leaf spot or blast of flowers and young shoots. The sour sa