The Canadian Entomologist (2011) 143, 380-383

Laurel J. Haavik, Matthew P. Ayres, Erik E. Stange and Fred M. Stephen (2011)
Phloem and xylem nitrogen variability in Quercus rubra attacked by Enaphalodes rufulus
The Canadian Entomologist 143 (4), 380-383
Abstract: We analyzed nitrogen (N) content in phloem and xylem of 75 northern red oak, Quercus rubra L. (Fagaceae), removed in 2002-2007 from three sites within the Ozark National Forest, Arkansas, to investigate the relationship between vascular tissue N status and wood borer infestation. Populations of native red oak borer, Enaphalodes rufulus (Haldeman) (Coleoptera: Cerambycidae), experienced an outbreak and population crash during the sampling period. Vascular tissue N was not correlated with borer infestation density (exit holes/m^-2/bark surface), which suggests variation in N status of vascular tissue was not influenced by or did not influence borer success. Vascular tissue N was greater in trees sampled during winter months than in trees sampled in spring and summer months.
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Link to article at publishers website
Database assignments for author(s): Laurel J. Haavik, Fred M. Stephen, Matthew P. Ayres

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Enaphalodes rufulus	Oak (Quercus)