. Diseases of economic plants. Plant diseases. Vegetable and Field Crops 211 farmers for many years. It is most conspicuous upon the pods as circular, somewhat sunken spots, 3-6 mm. in diameter, which are dark bordered, pale in the centers, or, when ma-. FiG. 114. — Pea leaves showing the spot disease. After van Hook. ture, somewhat pink. In these spots numerous pycnidia are visible and under favorable conditions the spore masses issuing from them may be seen with the naked eye. Upon. Please note that these images are extracted from scanned page images that may have been digitally enhanced for
. Diseases of economic plants. Plant diseases. Vegetable and Field Crops 211 farmers for many years. It is most conspicuous upon the pods as circular, somewhat sunken spots, 3-6 mm. in diameter, which are dark bordered, pale in the centers, or, when ma-. FiG. 114. — Pea leaves showing the spot disease. After van Hook. ture, somewhat pink. In these spots numerous pycnidia are visible and under favorable conditions the spore masses issuing from them may be seen with the naked eye. Upon. 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- [from old catalog]; Hall, John Galentine, 1870- [from old catalog] joint author. New York, The Macmillan company
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License: Licensed
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1921
