Diseases of economic plants (1910) Diseases of economic plants diseasesofeconom02stev Year: 1910 TREES AND TIMBER 425 soil by means of the fine roots and infect neighboring trees. Upon newly cleared land diseased roots of forest trees may be a source of infection to fruit trees subsequently grown thereon. Polyporose (Polyporus versicolor). See p. 429. Fig. 184. —Armillaria mellea attacking a tree. After Freeman. Red rot (Fomes annosus Ft.). — Though not very de- structive in this country, this fungus has been found on many of the pines, where it brings about a red rot of the root system,
Diseases of economic plants (1910) Diseases of economic plants diseasesofeconom02stev Year: 1910 TREES AND TIMBER 425 soil by means of the fine roots and infect neighboring trees. Upon newly cleared land diseased roots of forest trees may be a source of infection to fruit trees subsequently grown thereon. Polyporose (Polyporus versicolor). See p. 429. Fig. 184. —Armillaria mellea attacking a tree. After Freeman. Red rot (Fomes annosus Ft.). — Though not very de- structive in this country, this fungus has been found on many of the pines, where it brings about a red rot of the root system, which ultimately results in the death of an affected tree. The fruiting bodies form small, cup-shaped or irregular masses on the roots or around the base of the
Size: 1551px × 1289px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
