File:California plant diseases (1911) (19892698494).jpg

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Title: California plant diseases
Identifier: californiaplantd218smit (find matches)
Year: 1911 (1910s)
Authors: Smith, Ralph E. (Ralph Eliot), 1874-1953; Smith, Elizabeth H. (Elizabeth Hight), 1877-1933
Subjects: Plant diseases
Publisher: Berkeley, Cal. : Agricultural Experiment Station
Contributing Library: University of California, Davis Libraries
Digitizing Sponsor: University of California, Davis Libraries

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About This Book: Catalog Entry
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1128 UNIVERSITY OF CALIFORNIA—EXPERIMENT STATION. time. It has even been found that the most healthy, green leaves, if picked from the tree and placed in a moist chamber, soon become cov- ered with this wither-tip fungus. Trees suffering from gum disease, gophers, drouth or any other influence which causes them to lose their vitality and begin to weaken and die back in the branches soon develop an abundance of this organism. It is also likely that citrus insects, like the red spider and any other which punctures or injures the fruit, may promote the development of this fungus. All in all, our conclusion has been that it is extremely doubtful whether the wither-tip fungus ever in California attacks sound, unin-
Text Appearing After Image:
Fig. 56.—Effect of wither-tip fungus on sickly lemon leaf and twig (Col- letotrichum gloeosporioides). jured, vigorous foliage, twigs or fruit, or develops at all, save in a secondary manner or following some other injury. The subject is still receiving careful investigation and will be made the subject of a future bulletin. "Within the last two or three years considerable spraying has been done in lemon groves in southern California with the idea of combating the supposed effects of this fungus. Such work has been done with Bordeaux mixture and also with various sulphur sprays made by com- bining sulphur with lime, soda or potash. Some growers have believed that they saw good results following such spraying, while others were unable to see such benefits. "We are following the results of such work.

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https://www.flickr.com/photos/internetarchivebookimages/19892698494/

Author Internet Archive Book Images
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(Reusing this file)		 At the time of upload, the image license was automatically confirmed using the Flickr API. For more information see Flickr API detail.
Volume
InfoField
B218
Flickr tags
InfoField
  • bookid:californiaplantd218smit
  • bookyear:1911
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Smith_Ralph_E_Ralph_Eliot_1874_1953
  • bookauthor:Smith_Elizabeth_H_Elizabeth_Hight_1877_1933
  • booksubject:Plant_diseases
  • bookpublisher:Berkeley_Cal_Agricultural_Experiment_Station
  • bookcontributor:University_of_California_Davis_Libraries
  • booksponsor:University_of_California_Davis_Libraries
  • bookleafnumber:92
  • bookcollection:californiaagriculturalexperimentstationpublications
  • bookcollection:ucdavis
  • bookcollection:americana
  • BHL Collection
Flickr posted date
InfoField
12 August 2015


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