. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1135 concerning the citrus tree, and make, in California at least, the con- sideration of plant physiology, soil and climatic conditions, and other similar factors of more importance than the study of parasitic attacks. Gummosis. See Lemon. Figure 49. Scaly Bark. Figure 63. Characterized by the appearance of scaly areas of bark on the trunk or branches, the outer bark rising in scales from the inner. Small drops. Fig. 63.—Scaly bark of orange. of gum exude in spots on the affected portion, which gradually spr
. California plant diseases. Plant diseases. Bulletin 218] CALIFORNIA PLANT DISEASES. 1135 concerning the citrus tree, and make, in California at least, the con- sideration of plant physiology, soil and climatic conditions, and other similar factors of more importance than the study of parasitic attacks. Gummosis. See Lemon. Figure 49. Scaly Bark. Figure 63. Characterized by the appearance of scaly areas of bark on the trunk or branches, the outer bark rising in scales from the inner. Small drops. Fig. 63.—Scaly bark of orange. of gum exude in spots on the affected portion, which gradually spreads. Affected limbs die back slowly but new growth keeps taking their place and the tree lives for many years in an unhealthy condition. This trouble apparently originates in an irregular moisture condition of the soil. Practically all the affected trees in the State have been in. 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 Smith, Ralph E. (Ralph Eliot), 1874-1953; Smith, Elizabeth H. (Elizabeth Hight), 1877-1933. Berkeley, Cal. : Agricultural Experiment Station
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplantdi, bookyear1911
