Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . also attacks peaches, and probably causes more losson this fruit than on the other. Dr. E. F. Smith, whohas made a special study of peach enemies, says : Thisfungus is more common and far more destructive thanany other observed on the peach in this country. It israrely absent from the orchard, and in rainy weather itfrequently destroys from one-half to three-fourths of thecrop, in some cases the entire crop. Under its influencethe fruit quickly loses its no
Fungi and fungicides; a practical manual, concerning the fungous diseases of cultivated plants and the means of preventing their ravages . also attacks peaches, and probably causes more losson this fruit than on the other. Dr. E. F. Smith, whohas made a special study of peach enemies, says : Thisfungus is more common and far more destructive thanany other observed on the peach in this country. It israrely absent from the orchard, and in rainy weather itfrequently destroys from one-half to three-fourths of thecrop, in some cases the entire crop. Under its influencethe fruit quickly loses its normal color and flavor, andbecomes an entire loss to the grower. As the fungusinvades the healthy tissues of the fruit the latter becomeleather-colored, or dark brown, and the peach is said torot, although, as Von Thiimen first pointed out, thechange is not strictly a ^rot. During unusually wet springs the blossoms of peachtrees are frequently destroyed by this fungus, and theyoung twigs are also attacked. The spores are propa-gated in vast numbers by the mummied peaches hangingon the trees, and are blown through the orchard, carry-. PLATE VIII. PEACH BLOSSOMS BLIGHTED BY ROT FUNGUS. THE PEACH EOT 75 ing destruction wherever they light ou a blossom. Thisinjury is sometimes called ^^peach blight. Some blos-soms so injured are represented at the right in Plate VIII,from a drawing published by Professor F. D. tufts of spores on a twig are shown at the left ofthe same figure. Treatment.—The remarks upon this subject con-cerning the plum (p. 58) are equally applicable to thepeach. ExiDcriments made in Delaware indicate that aconsiderable j^roportion of the rot may be prevented byproper treatment. Professor Chester recommends thefollowing j^rocedure : Pick off late in autumn or earlyin winter all mummied fruit on the trees. It would bebetter to remove it at the time of picking, or soon with simple solution copper sulphate (one poundto twenty-five gallons wat
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpathoge, bookyear1896
