. California plant diseases. Plant diseases. Fig. 99.—Walnut perforation. Die-Back. Figure 100. The limbs die back from the ends, sometimes for only a short dis- tance and sometimes down to the main forks of the tree. All the limbs or only a part of them may be affected. Two general types of die-back may be distinguished, one on the old trees, particularly "hard shells," which die back slowly all over the top, and another in young trees from two to ten years old, which die back suddenly during a single winter in part or all of the limbs, or sometimes the whole tree dies back clear to
. California plant diseases. Plant diseases. Fig. 99.—Walnut perforation. Die-Back. Figure 100. The limbs die back from the ends, sometimes for only a short dis- tance and sometimes down to the main forks of the tree. All the limbs or only a part of them may be affected. Two general types of die-back may be distinguished, one on the old trees, particularly "hard shells," which die back slowly all over the top, and another in young trees from two to ten years old, which die back suddenly during a single winter in part or all of the limbs, or sometimes the whole tree dies back clear to the ground. The former type of die-back affecting old trees occurs mostly on light soils where the trees are getting old and the roots find insufficient moist-. 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
