Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . he ripening heavy rain followed by warm weatlier may, at thisvital period, cause the peaches to rot ra]ndly ; hence,due regard should be given this point in regulating theexact time when a spraying should be made. Due atten-tion to this principle may save hundreds of baskets offruit, and the grower can well afford to make sprayingat the right time his first business. It may be doubted,however, whether these late applications, are advisable,from a s
Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . he ripening heavy rain followed by warm weatlier may, at thisvital period, cause the peaches to rot ra]ndly ; hence,due regard should be given this point in regulating theexact time when a spraying should be made. Due atten-tion to this principle may save hundreds of baskets offruit, and the grower can well afford to make sprayingat the right time his first business. It may be doubted,however, whether these late applications, are advisable,from a sanitary standpoint. Treatment with coppermixtures at frequent intervals during the ripeningperiod means the presence of copper salt upon the mar-keted fruit, unless it is washed off after picking. 76 FUNGI AXD FUXGICIDES Literature.—Dr. Smiths articles concerning theinjuries of peaches caused by this fungus may be foundin the Journal of Mycology, v. V, pp. 123-134, and sub-sequent issues. An account of Professor Chesters ex-periments is giyen in Bulletin XIX of the DelawareCollege Experiment Station. A Fungi Affecting small Fruits. < ?; FUNGI AFFECTING THE GRAPE The Black Rot Lcestadia bidivellii This is the most generally destructive fungous dis-ease of the grape in the United States. It is most inju-rious in southern latitudes, being much less yirulent asfar north as Northern Ohio or Western New York thanin Tennessee or the Carolinas. Like most fungous dis-eases, it develops with greatest rapidity during damp,hot weather, or when nights with heavy dews alternatewith hot days. The black rot fungus usually first appears on theleaves early in summer in the shape of small, sharplydefined reddish-brown spots, having yellowish centers,and dark brown or blackish borders, with numerousminute black pustules scattered over the surface. Ashort time afterward—generally about a fortnight—theattack upon the fruit becomes noticeable. According to Professor F. D. Chester, who hasstu
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpathoge, bookyear1896
