. Fig. 14.—Seedling heat injury of carrot. transplanting favors the disease. Only sound, healthy carrots, free from injuries, should be used for seed growing. Southern Root Rot.—Carrots are very susceptible to this disease, which is of great importance on sugar beets and other crops (p. 21). The grow- ing plants are killed by a rather firm rot of the roots, the fungus, Sclero- tiuni Eolfsii, being visible on and about the affected plants as a whitish mold bearing numerous little mustard-seed-like sclerotia (fig. 9, p. 21). This fungus persists in the soil when susceptible plants like beets or
. Fig. 14.—Seedling heat injury of carrot. transplanting favors the disease. Only sound, healthy carrots, free from injuries, should be used for seed growing. Southern Root Rot.—Carrots are very susceptible to this disease, which is of great importance on sugar beets and other crops (p. 21). The grow- ing plants are killed by a rather firm rot of the roots, the fungus, Sclero- tiuni Eolfsii, being visible on and about the affected plants as a whitish mold bearing numerous little mustard-seed-like sclerotia (fig. 9, p. 21). This fungus persists in the soil when susceptible plants like beets or car- rots are grown upon it. Carrots should not be planted on land infested with S. Eolfsii. Watery Soft Rot, Cottony Rot.—The well-known cottony-rot fungus, Sclerotinia sclerotioriim, sometimes attacks carrots growing in the field and causes a rotting of the roots at the surface of the ground. The snowy- white mold growth spreads from plant to plant so that all the carrots are
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Keywords: ., bookcentury1900, booksubjectagriculturalpests, booksubjectplantd
