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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

Defoliation and infestation of Cucurbita pepo genotypes by diabroticite beetles  [1996]

Hoffmann, M.P. (Cornell University, Ithaca, NY.); Robinson, R.W.; Kyle, M.M.; Kirkwyland, J.J.;

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Seventy-six Cucurbita pepo L. cultivars and breeding lines were evaluated under field conditions for infestation levels and defoliation (leaf area consumed by beetles) by adult diabroticite beetles in 1992 and 1994. Striped and spotted cucumber beetles, Acalymma vittatum (F.) and Diabrotica undecimpunctata howardi Barber, respectively, were most common, but some western and northern corn rootworms, D. virgifera virgifera LeConte and D. barberi Smith and Lawrence, respectively, also were present. In general, pumpkin, delicata, acorn winter squash, scallop, and yellow straightneck summer squash types were the least infested and defoliated. Caserta/yellow, zucchini, caserta/zucchini, caserta, and precocious yellow straightneck types were the most infested and defoliated. The number of beetles per plant was correlated (r greater than or equal to 0.72) with leaf defoliation and proportion of plants infested, indicating that beetle infestation is a good predictor of damage. The cultivars and breeding lines that were the least infested and defoliated can be used in breeding programs to develop desirable genotypes with reduced beetle preference. Conversely, those genotypes that were highly preferred have potential as trap crops for these beetle pests
From the journal
HortScience : a publication of the American Society for Horticultural Science (USA)
ISSN : 0018-5345

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
1998
Volume:
31
Issue:
3
Start Page:
439
End Page:
442
All titles:
"Defoliation and infestation of Cucurbita pepo genotypes by diabroticite beetles"@eng
Other:
"references"
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
1998
Volume:
31
Issue:
3
Start Page:
439
End Page:
442
All titles:
"Defoliation and infestation of Cucurbita pepo genotypes by diabroticite beetles"@eng
Other:
"references"