. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. 242 FUNGOUS DISEASES OF PLANTS hyphae as yeast-like conidial cells. The cushion-like masses also produce conidia in quantity. Mayr described certain macroconidia borne upon small, white stromata preceding the usual cushions on the canes ; but Durand was unable to detect such FIG. IO3. PLEONECTRrA BEROLINENSIS: A CLUSTER OF PERITHECIA (Photograph by E. J. Durand) Control. It would seem that the most practical method of control consists in eradicating diseased vines as they
. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. 242 FUNGOUS DISEASES OF PLANTS hyphae as yeast-like conidial cells. The cushion-like masses also produce conidia in quantity. Mayr described certain macroconidia borne upon small, white stromata preceding the usual cushions on the canes ; but Durand was unable to detect such FIG. IO3. PLEONECTRrA BEROLINENSIS: A CLUSTER OF PERITHECIA (Photograph by E. J. Durand) Control. It would seem that the most practical method of control consists in eradicating diseased vines as they appear in the spring, the habit and color of the affected canes giving the necessary clue to their presence. XXXIV. EUROPEAN APPLE CANKER Nectria ditissima Tul. Hartig, R. Der Krebspilz der Laubholzbaume, Nectria ditissima Tul. Un- ters. a. d. forstbotan. Institut Munchen 1: 109-128. pi. 6. 1880. This disease is apparently widespread in Europe upon the apple, and it is not uncommon in the northeastern United States upon the same host. It may also appear on the pear. The fungus seems to gain entrance to the host through wounds, especially hailstone bruises. The mycelium penetrates the bark chiefly, but. 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 Duggar, Benjamin M. (Benjamin Minge), 1872-1956. Boston ; New York : Ginn
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