Diseases of field crops in Diseases of field crops in the Prairie Provinces disoffieldcrop Year: 1957 DISEASES OF FIELD CROPS Figure 19.—Wilt of flax. Stem Break and Browning Polyspora Uni Stem break and browning are two forms of a disease, caused by a seed-borne fungus, which occurs in the park belt of Saskatchewan and Alberta and is responsible for appreciable damage in some years. The disease has been found in Manitoba but is not common nor destructive there. Appearance—The earliest symptoms are water-soaked spots which develop very slowly on the first leaves. Plants are rarely killed
Diseases of field crops in Diseases of field crops in the Prairie Provinces disoffieldcrop Year: 1957 DISEASES OF FIELD CROPS Figure 19.—Wilt of flax. Stem Break and Browning Polyspora Uni Stem break and browning are two forms of a disease, caused by a seed-borne fungus, which occurs in the park belt of Saskatchewan and Alberta and is responsible for appreciable damage in some years. The disease has been found in Manitoba but is not common nor destructive there. Appearance—The earliest symptoms are water-soaked spots which develop very slowly on the first leaves. Plants are rarely killed in the seedling stage. The fungus spreads from the leaves to the first node of the stem and develops there. When the plants are in bud or flower, they may 70
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