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Plant Sciences

Theses/Dissertations

Louisiana State University

2007

Tree vigor

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An Assessment Of The Risk Mapping System For The Use Of Managing Loblolly Pine Decline Sites Within Red-Cockaded Woodpecker Habitat, Roger Dale Menard Jan 2007

An Assessment Of The Risk Mapping System For The Use Of Managing Loblolly Pine Decline Sites Within Red-Cockaded Woodpecker Habitat, Roger Dale Menard

LSU Master's Theses

A decline of loblolly pine (Pinus taeda L.), characterized by expanding areas of declining and dead trees, has become prevalent at Fort Benning, Georgia. A 3 year study was conducted to determine the kinds of fungi, insects, and site disturbances associated with this problem. The insects Dendroctonus terebrans, Hylastes salebrosus, Hylastes tenuis, Pachylobius picivorus and Hylobius pales were significantly more abundant in symptomatic than in asymptomatic loblolly pine plots. These root and lower stem-infesting insects consistently carried the fungi Leptographium terebrantis, L. procerum, and L. serpens. Root sampling revealed high levels of root damage and mortality, staining and infection with …