. The American fruit culturist. Fig. 292.—Currant Canes, showing the Blight as projections from the surface.(From Durand.) susceptible and usually are considered not worthy of cultiva-tion because of the prevalence of this disease. This mildewproduces a felt-like brown coating upon the young growth ofstems, including the leaves and fruit, which are much dwarfedand distorted. The fungus superficial and consistsof filaments lying upon the surface with upright branches that THE DISEASES OF FRUITS. 239 bear the spores. There is a second form of spore produced inspherical thick-walled b
. The American fruit culturist. Fig. 292.—Currant Canes, showing the Blight as projections from the surface.(From Durand.) susceptible and usually are considered not worthy of cultiva-tion because of the prevalence of this disease. This mildewproduces a felt-like brown coating upon the young growth ofstems, including the leaves and fruit, which are much dwarfedand distorted. The fungus superficial and consistsof filaments lying upon the surface with upright branches that THE DISEASES OF FRUITS. 239 bear the spores. There is a second form of spore produced inspherical thick-walled bodies, designed for preserving themildew through the winter. These form later in the seasonthan the small naked spores previously mentioned. Remedies.—Satisfactory results are obtained from sprayingthe gooseberry plants, partly because the mildew is upon thesurface only. With a similar fungus upon greenhouse rosesflowers of sulphur has long been in use, dusted upon the plants. Fig. 293.—a Leaf of the Strawberry showing the Spot. (From Bailey.) or placed upon the heating pipes where it gives off fumes. Atsome Experiment Stations sulphide of potassium has beenfound effective against the gooseberry mildew, the formulabeing one ounce to a gallon of water. This is a solution easilymade and applied and is a comparatively clear liquid. Goodresults follow the use of Bordeaux, but this of course tends tocoat the fruit. The Ground Fruits. The Strawberry.—Leaf Spot {SphcErella fragarice Tul.) isthe most conspicuous and common of the fungous enemies ofthe strawberry. This causes purple spots upon the leaves, the 24° THE DISEASES OF FRUITS. centres becoming ashy gray (see Fig. 293). The fungus alsoattacks the fruit-stalks, cutting off the supply of nourishmentand thereby injuring the crop. During winter the fungusremains in the affected parts, particularly the old leaves. Remedies.—Many remedies have been used upon the straw-berry, some of them with indifferent r
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