Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . y of liquidto slake them.) Thoroughly dampen a tight woodenbox, and put in a layer of the lime and sprinkle withthe copper solution till it falls into a fine dust. Put inanother layer and sprinkle, and continue till the bushelof lime is reduced to a dry powder. This powder is tobe dusted over the foliage. Sulphide of potassium—oneounce to ten gallons of water—has also been successfullyused. The Carnation Leaf=spot Septoria dianthi This is a widely distribut
Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . y of liquidto slake them.) Thoroughly dampen a tight woodenbox, and put in a layer of the lime and sprinkle withthe copper solution till it falls into a fine dust. Put inanother layer and sprinkle, and continue till the bushelof lime is reduced to a dry powder. This powder is tobe dusted over the foliage. Sulphide of potassium—oneounce to ten gallons of water—has also been successfullyused. The Carnation Leaf=spot Septoria dianthi This is a widely distributed and troublesome dis-ease. It appears on the leaves and stems in the shapeof a more or less circular purplish spot with a whitish 122 FUNGI AND FUNGICIDES center, the latter often being dotted with black by thefruiting portions of the fungus. The fungus penetratesthe stem rather deeply, often cutting off the supply ofnutriment to the flowers, and, consequently, preventingtheir development. A plant injured in this way is rep-resented in Fig. 53, from a photograph by ProfessorAtkinson. The spores are produced in great FIG. 53. CARJsATIOX INJURED BY LEAF-SPOT. and distributed bv means of wind and water. Care inwatering, and the use of fungicides, are the best reme-dial measures. There are certain other carnation diseases, such asthe anthracnose, the leaf-mold, and the rosette, whichneed hardly be discussed in this connection. Partialaccounts of them may be found in American Gardeningfor April, 1893, where also the diseases treated of above THE MIGNOXETTE DISEASE 123 are described. One of the fullest accounts of the carna-tion rust, by Professor Arthur, occurs in The AmericanFlorist, Feb. 18, 1892. The Mignonette Disease Cercospora resedce Mignonettes frequently suffer from a disease whichmay first be noticed, ^^either as minute pale spots withbrownish or yellowisli boiders—little sunken areas in
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpathoge, bookyear1896
