Refinement of the Lethal Trap Tree Method for Spruce Beetle Control1

Post-Attack Injection of Silvisar 510 (Cacodylic Acid) in Spruce Beetle (Coleoptera: Scolytidae) Infested Trees

“…50% greater than those found by Buffam et al (1973) for similar heights but very similar to concentrations reported by Lister et al (1976). 50% greater than those found by Buffam et al (1973) for similar heights but very similar to concentrations reported by Lister et al (1976).…”

The effectiveness of vegetation management practices for prevention and control of bark beetle infestations in coniferous forests of the western and southern United States

“…Dispersing adults of several bark beetle species are attracted to trap trees (Nagel et al, 1957;Lister et al, 1976;Schmid and Frye, 1976;Gibson, 1984;among others). This method involves the use of living or felled trees that are usually baited with attractive semiochemicals and harvested or otherwise removed prior to emergence of the developing brood (Wood et al, 1985), or treated with insecticides to kill arriving beetles (Smith, 1986b).…”

Lethal trap trees: a potential option for emerald ash borer (Agrilus planipennis Fairmaire) management

“…53 In forested settings, lethal trap trees consisting of pine or spruce trees that were sprayed with insecticide and then felled or baited with semiochemicals (e.g. aggregation pheromones) were used in management efforts targeting aggressive bark beetles, including the spruce beetle, Dendroctonus rufipennis Kirby, 37,40 the mountain pine beetle, Dendroctonus ponderosae Hopkins, 38 the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins, 39 and the southern pine beetle, Dendroctonus frontalis Zimmerman. 36 While TREE-äge or other highly effective, systemic insecticides are most likely to be used for long-term protection of high-value ash, lethal trap trees could play a role in operational EAB management programs.…”

“…We hypothesized that injecting ash trees with emamectin benzoate and then girdling the trees a few weeks later could effectively create lethal trap trees for EAB if the girdling did not interfere with translocation of the insecticide. Lethal trap trees, which employ the attract‐annihilate strategy of behavioral pest management, have been used for a wide range of insect pests, including several bark beetles . Adult EAB beetles attracted to volatiles emitted by girdled ash trees would be controlled if they fed on leaves of treated trees, reducing oviposition on the treated tree and perhaps nearby trees.…”