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Relation between Early- and Late-Season Loblolly Pine Seedling Mortality from Pales and Pitcheating Weevil Attack in Southeast Oklahoma

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Impact of the pales weevil (Hylobius pales (Herbst)) and the pitcheating weevil (Pachylobius picivorus (Germar)) was assessed during the 1979 growing season on 15 newly established loblolly pine (Pinus taeda L.) plantations in southeast Oklahoma. Early-season seedling mortality was directly related to total-season seedling mortality attributed to weevils. A linear regression model, ML = 4.04 + 1.44 M20, is used to predict cumulative late-season (late October) seedling mortality (ML) as a function of mortality accumulated by the twentieth calendar week (mid-May) (M20). This model has been used in southeast Oklahoma to establish threshold levels of weevil impact on which to base decisions regarding remedial chemical treatments.

Document Type: Journal Article

Affiliations: Department of Forestry, Clemson University, Clemson, South Carolina 24631

Publication date: August 1, 1984

More about this publication?
  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.
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