Notes: Lightwood Induction and Associated Beetle Attacks on Slash Pine

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The herbicide Paraquat was applied to 15-year-old slash pine (Pinus elliottii) at concentrations of 0, 1, and 3 percent. Five methods of application were applied to either 1/3 or ¼ of the tree-circumference. Beetle attacks were monitored at each tree. Paraquat concentration significantly influenced black turpentine beetle (Dendroctonus terebrans) and engraver beetle (Ips spp.) attacks. No differences were found in the number of trees attacked by black turpentine beetle or Ips between application methods. Significantly more turpentine beetle attacks occurred on trees with 1/3 of their circumference treated than those with ¼ treated. Paraquat concentration exhibited the most significant influence on tree mortality with associated insect attack. Forest Sci. 25:80-83.

Keywords: Black turpentine beetle; Dendroctonus terebrans; Ips spp; Paraquat; Pinus elliottii; lightered wood

Document Type: Miscellaneous

Affiliations: Cultural Treatments Research, Company's Southlands Experiment Forest, Bainbridge, Georgia 31717

Publication date: March 1, 1979

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  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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