. Diseases of economic plants. Plant diseases. VEGETABLE AND FIELD CROPS 317 There is no objection to the use of stable manure which does not contain the fungus, but experience has shown that when the wilt once gains entrance to the compost heap or barnyard, it remains there for years, and all of the manure taken out of such a yard is likely to spread the disease. Hence it is exceedingly dangerous in re- gions where the wilt prevails to use any stable manure on the field where melons are to be planted. Varieties resist- ant to this disease have been devel- oped by the United States Department
. Diseases of economic plants. Plant diseases. VEGETABLE AND FIELD CROPS 317 There is no objection to the use of stable manure which does not contain the fungus, but experience has shown that when the wilt once gains entrance to the compost heap or barnyard, it remains there for years, and all of the manure taken out of such a yard is likely to spread the disease. Hence it is exceedingly dangerous in re- gions where the wilt prevails to use any stable manure on the field where melons are to be planted. Varieties resist- ant to this disease have been devel- oped by the United States Department of Agriculture by crossing the citron, which possesses high resistance, with the watermelon, and then by selection attaining the desired edibility. Wilt, bacillose. See cantaloupe. Wilt, micosphaerellose. See Fig. 137. — Portion of watermelon showing effect of anthracnose. After 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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