File:Diseases of truck crops - Ralph E. Smith (1940) (20980225561).jpg

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Title: Diseases of truck crops / Ralph E. Smith
Identifier: diseasesoftruckc119smit (find matches)
Year: 1940 (1940s)
Authors: Smith, Ralph E. (Ralph Eliot), 1874-1953
Subjects: Plant diseases; Plant parasites; Vegetables; Agricultural pests
Publisher: Berkeley, Calif. : College of Agriculture, Univ. of Calif.
Contributing Library: University of California, Davis Libraries
Digitizing Sponsor: University of California, Davis Libraries

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32 California Agriculturad Extension Service (CiR. 119 The plants are stunted, the central leafstalks being shortened and the outer ones assuming a horizontal position. The disease is most prevalent during the summer months and is spread by aphids from plant to plant. No wild host plants are known, but carrots and celeriac are susceptible. Several other mosaiclike diseases of celery are distinguished in Cali-
Text Appearing After Image:
Fig. 16.—Western celery mosaic. fonia, including those called "calico," "yellow spot," and "ring spot," as well as aster yellows (p. 29) and spotted wilt (p. 33). These are much less important than western celery mosaic, which is a serious disease in most celery-growing districts of the state. Spraying to control aphids may help to prevent the spread of mosaic. For this purpose, nicotine may be added to the sprays used for blight (p. 30). In one part of the state, the control of mosaic has been attempted by the legal establishment of a "celery-free period" of 3 months, during which time no celery plants are allowed to exist in the district.'" Such i<»See: Milbrath, D. G., and Harold J. Eyan. A method of control of western celery mosaic. California State Dept. Agr. Bui. 27:290-95. 1938.

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https://www.flickr.com/photos/internetarchivebookimages/20980225561/

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Volume
InfoField
E119
Flickr tags
InfoField
  • bookid:diseasesoftruckc119smit
  • bookyear:1940
  • bookdecade:1940
  • bookcentury:1900
  • bookauthor:Smith_Ralph_E_Ralph_Eliot_1874_1953
  • booksubject:Plant_diseases
  • booksubject:Plant_parasites
  • booksubject:Vegetables
  • booksubject:Agricultural_pests
  • bookpublisher:Berkeley_Calif_College_of_Agriculture_Univ_of_Calif_
  • bookcontributor:University_of_California_Davis_Libraries
  • booksponsor:University_of_California_Davis_Libraries
  • bookleafnumber:32
  • bookcollection:californiaagriculturalexperimentstationpublications
  • bookcollection:ucdavis
  • bookcollection:americana
  • BHL Collection
Flickr posted date
InfoField
29 August 2015



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