. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. FOREST DISEASE SURVEYS. 11 always remains a great danger of infection spreading to the young stock, with consequent loss. This has been shown in several recent cases where forest nurseries were located in close proximity to dis- eased trees and alternate hosts. At the forest nursery at HaUgan,. Pig. 12.—Fomes officinalis, chalk fungus, showing typical rot in lodgepole pine, white mycelium in the cracks. (Photographed by G. G. Hedgcock.) Note the Mont., yellow-pine seedlings became se
. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. FOREST DISEASE SURVEYS. 11 always remains a great danger of infection spreading to the young stock, with consequent loss. This has been shown in several recent cases where forest nurseries were located in close proximity to dis- eased trees and alternate hosts. At the forest nursery at HaUgan,. Pig. 12.—Fomes officinalis, chalk fungus, showing typical rot in lodgepole pine, white mycelium in the cracks. (Photographed by G. G. Hedgcock.) Note the Mont., yellow-pine seedlings became seriously infected with Cronar- tium colcosporioides (Peridermiam filamentosum Pk.). The disease was transmitted by means of the alternate form of the rust occurring on the Indian paintbrush (CastUleja miniata Dough), which was found growing at the very edge of the nursery A survey of 1 Weir, J. R., and Hubert, E. E. A serious disease in forest nurseries caused by Peri- dermium filamentosum. In Jour. Agr. Research, v. 5, no. 17, p. 781-785. 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 United States. Dept. of Agriculture. [Washington : U. S. Dept. of Agriculture]
Size: 1289px × 1938px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1913
