. The potato; a practical treatise on the potato, its characteristics, planting, cultivation, harvesting, storing, marketing, insects, and diseases and their remedies . ermont blight oftenappears in August, and from then on the pota-toes have grown 50 bushels a week when thefoliage was preserved. 7. The tuber produdlion is increased, due to increase in the size of the tubers and the number oftubers per plant. Jones & Morse, of Vermont,show that the average yield for thirteen years(1891 to 1904), without spraying, was 171bushels per acre, while the sprayed plats yielded286 bushels per acre, or
. The potato; a practical treatise on the potato, its characteristics, planting, cultivation, harvesting, storing, marketing, insects, and diseases and their remedies . ermont blight oftenappears in August, and from then on the pota-toes have grown 50 bushels a week when thefoliage was preserved. 7. The tuber produdlion is increased, due to increase in the size of the tubers and the number oftubers per plant. Jones & Morse, of Vermont,show that the average yield for thirteen years(1891 to 1904), without spraying, was 171bushels per acre, while the sprayed plats yielded286 bushels per acre, or an average annual gainof 115 bushels per acre. 8. The dry matter is increased. 9. Starch formation in the tuber is considerably in- creased. At Geneva, (N. Y.) Experiment Sta-tion an increase of 7 per cent, was Where there is no disease the yield may be in- Frank & Kruger. E S. R., VI., p. 306 2 yt. Report, 1899, p. 156. ^ Vt. Bui. 40, pp. 26, 27 ; Report, 1899, p. 272. Can. Exp. Farms Report, 1901, p 120.* (N. Y.) Geneva Bui. 221. ^ Vt. Bui. 106, p. 231. 6 (N. Y.) Geneva Bui. 221. E. S. R., Vol. IX., p. 765. (N. Y.) Geneva Bui. 123, p. s v: ^ 134 ^^E POTATO creased by spraying, due to increased vigor ofthe plants. At the Vermont Experiment Sta-tion, in 1900, the yield was increased 73 bushelsper acre by spraying, although blight did notappear that of Spraying.—Thoughtfulness, thorough-ness, and timeliness are essential to success. A manmust watch his crop, the season, and conditions; knowfor what he is spraying, and do it intelligently as wellas thoroughly. In wet years spraying should beginearlier than in dry. The first spraying should be givenearly enough to ward off the first attack. At VermontExperiment Station, in 1900, three applications weremost economical, but the first one, that of July 26, wasthe most important, as half the entire gain was due toit; the sprayings on August 17 and September 8 wereof about equal importance. At the same st
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