. Diseases of economic plants. Plant diseases. VEGETABLE AND FIELD CROPS 267 Commence spraying with Bordeaux when plants are 6 to 8 inches high and repeat at intervals of 10 to 14 days throughout the season, making, in all, five or six applica- tions. When bugs or flea beetles are numerous, add Paris green or other poison. In case the tops have blighted, the. Fig. 120. — Potato scab, a, natural ; b, produced by inocula- tion forming monogram R. T. After Conn. Agr. Exp. Sta. danger of tuber infection and consequent rot is lessened by delaying the harvest of the tubers until at least a week or t
. Diseases of economic plants. Plant diseases. VEGETABLE AND FIELD CROPS 267 Commence spraying with Bordeaux when plants are 6 to 8 inches high and repeat at intervals of 10 to 14 days throughout the season, making, in all, five or six applica- tions. When bugs or flea beetles are numerous, add Paris green or other poison. In case the tops have blighted, the. Fig. 120. — Potato scab, a, natural ; b, produced by inocula- tion forming monogram R. T. After Conn. Agr. Exp. Sta. danger of tuber infection and consequent rot is lessened by delaying the harvest of the tubers until at least a week or ten days after the death of the Scab (Oospora scabies Thaxt.). — Potato scab prevails in Europe, Africa, New Zealand, in all parts of the United States, and probably everywhere the potato is grown. Though practically all American potato scab may be classed as one disease, there is some evidence that there is more than one form of disease which passes under this 1 Jones, L. R., and Morse, W. J., Vt. Agr. Exp. Sta. Rpt. 16, p. 163, 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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