File:Bulletin of the U.S. Department of Agriculture (1913-1923.) (19878615173).jpg

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Title: Bulletin of the U.S. Department of Agriculture
Identifier: bulletinofusdep726750unit (find matches)
Year: 1913-1923. (1910s)
Authors: United States. Dept. of Agriculture
Subjects: Agriculture; Agriculture
Publisher: (Washington, D. C. ?) : The Dept. : Supt. of Docs. , G. P. O.
Contributing Library: American Museum of Natural History Library
Digitizing Sponsor: American Museum of Natural History Library

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ANTHEAClSrOSE OF CUCURBITS. 31 conditions is not clear, unless the rains of July 12, 16, and 19 served to render conspicuous the incipient centers already existent. We have then, on August 1, 20 centers in field 1 and 13 in field 2, none of which were showing much secondary infection. The further observation of anthracnose occurrence in fields 3, 4, and 5 was inter-
Text Appearing After Image:
Fig. 12.—Diagram showing the weather conditions at Madison, Wis., during the summer of 1916. The curve represents the daily mean temperatures; the dotted line, the approximate optimum for the fungus; the black columns, the rainfall. fered with by the removal of plants in connection with a mosaic con- trol experiment. The data presented above, as well as results that were obtained later on these fields, are summarized in Table III. Table III.—Anthracnose in fields at Madison, Wis., in 1916. Date first noted. Progress of disease. Field. Date. Number of centers. Date. Number of centers. Date. Number of centers. No. 1 July 19 July 20 July 21 July 22 ...do July 27 ...do July 21 July 22 ...do .... 15 5 1 1 1 1 Aug. 3 Aug. 1 July 26 20 13 5 Aug. 15 Aug. 14 Aug. 11 Aug. 18 ...do 46 No. 2 30 No. 3 12 No. 4 6 No. 5 10 No. 19 Aug. 24 Aug. 24 Aug. 30 2 The slowness of spread of the disease up to the first week in August may be in part explained by the extremely hot, dry weather of July, with no heavy rains after July 20. Reference to the weather chart will show that the daily mean temperatures during the latter part of July were well above the optimum (75° F.) for this fungus. Edger-

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Volume
InfoField
1921
Flickr tags
InfoField
  • bookid:bulletinofusdep726750unit
  • bookyear:1913-1923.
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:United_States_Dept_of_Agriculture
  • booksubject:Agriculture
  • bookpublisher:_Washington_D_C_The_Dept_Supt_of_Docs_G_P_O_
  • bookcontributor:American_Museum_of_Natural_History_Library
  • booksponsor:American_Museum_of_Natural_History_Library
  • bookleafnumber:135
  • bookcollection:americanmuseumnaturalhistory
  • bookcollection:biodiversity
  • bookcollection:americana
  • BHL Collection
  • BHL Consortium
Flickr posted date
InfoField
12 August 2015


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current17:16, 21 September 2015Thumbnail for version as of 17:16, 21 September 20151,708 × 1,122 (629 KB) (talk | contribs)== {{int:filedesc}} == {{information |description={{en|1=<br> '''Title''': Bulletin of the U.S. Department of Agriculture<br> '''Identifier''': bulletinofusdep726750unit ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default...

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