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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

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Journal Article

Journal Article

survey of honey bee colony losses in the United States, fall 2008 to spring 2009  [2010]

vanEngelsdorp, Dennis; Hayes, Jerry Jr.; Underwood, Robyn M.; Pettis, Jeffery S.;

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This study records the third consecutive year of high winter losses in managed honey bee colonies in the USA. Over the winter of 2008-9 an estimated 29 % of all US colonies died. Operations which pollinated Californian almond orchards over the survey period had lower average losses than those which did not. Beekeepers consider normal losses to be 17.6 %, and 57.9 % of all responding beekeepers suffered losses greater than that which they considered to be acceptable. The proportion of operations with the Colony Collapse Disorder (CCD) symptom of "no dead bees in the colony or apiary" decreased in this period as compared to the previous years. The proportion of colonies dying from apparently manageable conditions, however, such as starvation or a weak condition in the fall increased as compared to previous surveys.
From the journal
Journal of apicultural research
ISSN : 2078-6913

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2013
Volume:
49
Issue:
1
Start Page:
7
End Page:
14
All titles:
"survey of honey bee colony losses in the United States, fall 2008 to spring 2009"@eng
Other:
"Includes references Summary in Spanish."
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2013
Volume:
49
Issue:
1
Start Page:
7
End Page:
14
All titles:
"survey of honey bee colony losses in the United States, fall 2008 to spring 2009"@eng
Other:
"Includes references Summary in Spanish."