A granular controlled-release formulation (98 percent inert, 2 percent 3-methyl-2-cyclohexen-1-one) was applied May 11-13, 1982, at 4.48 kg/ha to 76.9 ha of uninfested windthrown Douglas-fir by helicopter with a modified aerial spreader of 1.13 m³ capacity. Granules measured on treated plots averaged 2.04-2.69 kg/ha, sufficient to reduce Douglas-fir beetle (Dendroctonus pseudotsugae) infestation 96.4 percent by late June. The same MCH treatment reduced spruce beetle (Dendroctonus rufipennis) attacks by 55 percent in fewer, intermingled windthrown Engelmann spruce.
MCH Pheromone for Preventing Douglas-Fir Beetle Infestation in Windthrown Trees
M. McGregor,M. M. Furniss,R. Oaks,Kenneth E. Gibson,Hubert E. Meyer
Published 1984 in Journal of Forests
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- Publication year
1984
- Venue
Journal of Forests
- Publication date
1984-10-01
- Fields of study
Agricultural and Food Sciences, Biology, Environmental Science
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Semantic Scholar
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