. Diseases of economic plants. Plant diseases. 232 DISEASES OF ECONOMIC PLANTS as well as in the field. It is well to sulphur the greenhouses thoroughly when empty and to clean and whitewash. Fig. 109. — Spots of downy mildew upon cucumber leaf. After Orton. all walls and wood in order to kill any fungi present. Should the disease appear, spray at once as in field practice. For direction for field spraying see cucurb spraying. Anthracnose (Colletotrichum lagenarium (Pers.) Ell. & Halst.).—Upon the cucumber leaf this disease makes circular,. Please note that these images are extracted from
. Diseases of economic plants. Plant diseases. 232 DISEASES OF ECONOMIC PLANTS as well as in the field. It is well to sulphur the greenhouses thoroughly when empty and to clean and whitewash. Fig. 109. — Spots of downy mildew upon cucumber leaf. After Orton. all walls and wood in order to kill any fungi present. Should the disease appear, spray at once as in field practice. For direction for field spraying see cucurb spraying. Anthracnose (Colletotrichum lagenarium (Pers.) Ell. & Halst.).—Upon the cucumber leaf this disease makes circular,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stevens, Frank Lincoln, 1871-1934; Hall, John Galentine, 1870- joint author. New York, The Macmillan Company
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Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1910, bookyear1910
