. Diseases of economic plants . Plant diseases. 426 DISEASES OF i;CONOMIC PLANTS trunk. The fungus has also been found growing on trees many years after they had died. Neighboring trees. Fig. 185. — Log rotted by Polyporus Schweiaitzii. After von Schrenk. generally become infected from a diseased tree, through the small fibrous roots. Root rot {Polyporus Schweinitzii Fr.). — A destructive root rot of spruce, fir, arbor vitae, and pine, by weakening the root or trunk, leads to the overthrow of the tree by Please note that these images are extracted from scanned page images that may have


. Diseases of economic plants . Plant diseases. 426 DISEASES OF i;CONOMIC PLANTS trunk. The fungus has also been found growing on trees many years after they had died. Neighboring trees. Fig. 185. — Log rotted by Polyporus Schweiaitzii. After von Schrenk. generally become infected from a diseased tree, through the small fibrous roots. Root rot {Polyporus Schweinitzii Fr.). — A destructive root rot of spruce, fir, arbor vitae, and pine, by weakening the root or trunk, leads to the overthrow of the tree by 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 Stevens, Frank Lincoln, 1871-1934; Hall, John Galentine, 1870-. New York : Macmillan


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Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1910, bookyear1910