Diseases of flowers and other Diseases of flowers and other ornamentals diseasesofflower118smit Year: 1940 42 California Agricultural Extension Service [Cm. 118 NARCISSUS7 Basal Rot, Fusarium Rot.—The bulbs in storage, or sometimes when dug from the ground, may show a rather dry rot, starting around the basal plate and extending into the fleshy scale bases. A white or pinkish-white fungus mold, a species of Fusarium, develops on the surface. To control this disease, sort out and discard all defective bulbs in dig- Fig. 13.—Narcissus mosaic disease. ging, avoid rough handling, and cure the
Diseases of flowers and other Diseases of flowers and other ornamentals diseasesofflower118smit Year: 1940 42 California Agricultural Extension Service [Cm. 118 NARCISSUS7 Basal Rot, Fusarium Rot.—The bulbs in storage, or sometimes when dug from the ground, may show a rather dry rot, starting around the basal plate and extending into the fleshy scale bases. A white or pinkish-white fungus mold, a species of Fusarium, develops on the surface. To control this disease, sort out and discard all defective bulbs in dig- Fig. 13.—Narcissus mosaic disease. ging, avoid rough handling, and cure the bulbs carefully. Treatment by dipping is discussed at the end of this chapter. Leaf Scorch.—The fungus Stagonospora Curtisii sometimes causes a blighting of the foliage, starting at the tip and finally killing the entire leaf. This greatly weakens the plants. Spraying with bordeaux mixture helps to stop the spread of the disease. Mosaic, Gray Disease.—Mosaic plants are stunted and lacking in 7 For further information on narcissus diseases see: McWhorter, Frank, and Free- man Weiss. Diseases of narcissus. Oregon Agr. Exp. Sta. Bui. 304:1-41. 21 figs. 1932.
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