Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . a h FIG. 62, CELEKY , Spores germinating; 6, section of leaf showing fungus. Magnified. tion are represented. No winter spores have yet beendiscovered. It has been found, in some localities, that celerygrowing in the shade is seldom affected by this it is recommended that, unless fungicides are tobe employed, as advised below, the celery bed be placedin situations shaded by trees; or that it be artificially10 146 FUIfGI AXD FUNGICIDE
Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . a h FIG. 62, CELEKY , Spores germinating; 6, section of leaf showing fungus. Magnified. tion are represented. No winter spores have yet beendiscovered. It has been found, in some localities, that celerygrowing in the shade is seldom affected by this it is recommended that, unless fungicides are tobe employed, as advised below, the celery bed be placedin situations shaded by trees; or that it be artificially10 146 FUIfGI AXD FUNGICIDES shaded by screens of lath, or similar material. It isimportant, also, that refuse leaves aSected by the dis-ease be gathered and burned. Literature.—Articles concerning this fungus occurin the United States Department of Agriculture rej^ortsfor 1886 (pp. 117-120) and 1888 (pp. 308-399) ; Bul-. FIG. G3. CELERY LEAF INJURED BY LEAF-BLIGHT. letin 2, New Jersey Experiment Station, and 1891 report(pp. 250-253); also Bulletin No. 51, New York Experi-ment Station. The Celery Leaf=blight Septoria petroselini, var. apii This is a disease somewhat similar to the blightalready described, which attacks all portions of the cel-ery plant except the root. Its presence is commonlyfirst shown by the appearance, on the leaves or stems, ofwatery areas, which soon afterwards become spotted THE CELEKY LEAF-SPOT 14,1! with smtill black dots, projecting slightly above thecuticle of the i)lai]t. These dots consist of the spores,or reproductive bodies of the fungus. A leaf injured bythis malady is represented in Fig. 63. The black spotsappear also on the stems and seeds of the fruiting plant,as shown in Plate XV, and it seems probable that thefungus is disseminated by means of such diseased malady commonly appears in the seed-bed, and itis, at least, a safe precaution not to plant seeds s
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpathoge, bookyear1896
