File:Annual report of the Board of Control of the New York Agricultural Experiment Station (1914) (14778627881).jpg

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Identifier: annualreportofbo3311newy (find matches)
Title: Annual report of the Board of Control of the New York Agricultural Experiment Station
Year: 1882 (1880s)
Authors: New York State Agricultural Experiment Station. Board of Control
Subjects: New York State Agricultural Experiment Station Agriculture
Publisher: Geneva, N.Y. New York Agricultural Experiment Station under authority of Cornell University
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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Plate XXVI.— Pear Tree Before (1) and After (2) Removal of Loose Bark.Removal of bark renders tree less attractive to winter adults of pear psylla.
Text Appearing After Image:
Plate XXVII.— Spraying fob Pstlla Control.Upper. CJnsprayed Kieffer pears defoliated by psylla attacks.Lower.— Adjoining trees in same orchard sprayed with lime-sulphur solution (» destroy psylla eggs. New York Agricultural Experiment Station. 427 STUDIES OF THE HABITS AND OVIPOSITION OFHIBERNATING FLIES. time of transformation of hibernating adults. The abundance of psyllas during the years 1909-1913 affordedample opportunity to watch the activities of the hibernating brood ofthis insect. Transformation to winter adults occurred in late Septem-ber or October of each year as shown in the accompanying table. Table I.— Time of Transformation of Psylla Adults in the Fall. 1910. 1911. 1912. 1913. First appearance of flies of winter brood Average greatest abundance Latest appearance of nymphs of summerbrood Sept. 28Oct. 16 Oct. 20 Oct. 10Nov. 3 Nov. 12 Oct. 10Oct. 21 Nov. 12 Sept. 29Oct. 20 Oct. 30 CONDITIONS UNDER WHICH FLIES HIBERNATE. Pear trees of all varieties were equally soug

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https://www.flickr.com/photos/internetarchivebookimages/14778627881/

Author New York State Agricultural Experiment Station. Board of Control
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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
1914
Flickr tags
InfoField
  • bookid:annualreportofbo3311newy
  • bookyear:1882
  • bookdecade:1880
  • bookcentury:1800
  • bookauthor:New_York_State_Agricultural_Experiment_Station__Board_of_Control
  • booksubject:New_York_State_Agricultural_Experiment_Station
  • booksubject:Agriculture
  • bookpublisher:Geneva__N_Y__New_York_Agricultural_Experiment_Station_under_authority_of_Cornell_University
  • bookcontributor:University_of_Illinois_Urbana_Champaign
  • booksponsor:University_of_Illinois_Urbana_Champaign
  • bookleafnumber:471
  • bookcollection:university_of_illinois_urbana-champaign
  • bookcollection:americana
Flickr posted date
InfoField
30 July 2014


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