. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 538 SPECIAL PLANT PATHOLOGY has been considered to be of such great importance, that strict quaran- tine regulations were established in order to keep it out of the country, but the result of a thorough exploration of the New England States during the summer of 1916 has shown its general distribution through- out them and even as far west as Minnesota. It appears to have been. Fig. 193.—White pine blister-rust, Cronarliutn ribicola. yl. Diseased tree with £ecial blisters broken open fro
. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 538 SPECIAL PLANT PATHOLOGY has been considered to be of such great importance, that strict quaran- tine regulations were established in order to keep it out of the country, but the result of a thorough exploration of the New England States during the summer of 1916 has shown its general distribution through- out them and even as far west as Minnesota. It appears to have been. Fig. 193.—White pine blister-rust, Cronarliutn ribicola. yl. Diseased tree with £ecial blisters broken open from which spores are blown to currant or gooseberry leaves; B, D, teliosori on under leaf surface of currant, Ribes. (From Gager, after Perley Spaulding.) introduced into America on nursery slock from Holland, and all the trees in these advanced posts of infection have been destroyed. In 1906, there was an outbreak on currants at Geneva and measures were taken to destroy the fungus in that vicinity. The oecidial stage, known as Feridermium strobi, appears on the pine tree and the uredinia and the. 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 Harshberger, John W. (John William), 1869-1929. Philadelphia : P. Blakiston's Son & Co
Size: 1329px × 1880px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1917
