Time of Cut as a Factor Influencing Infestation of Coniferous Logs

Abstract

During the summer months, dead and weakened trees and logs left in the woods are subject to attack by a variety of insects, mainly of the order Coleoptera. Some are wood-boring forms which cause a depreciation in the potential value of the lumber; others are barkbeetles which at times may build up in numbers sufficient to cause a primary attack on the living stand.

Deterioration of Fire-Killed Pine in Ontario and the Causal Wood-Boring Beetles

“…The most numerous of all species of cerambycids found in the fire-killed trees, this species has been reported breeding in pine, spruce, and balsam fir (Morley, 1939). Large numbers were found in all three pines that had been killed by the fire.…”

Red pine harvest debris as a potential source of inoculum of Diplodia shoot blight pathogens

“…Damaging organisms such as insect pests can be present in harvest debris (e.g. Morley, 1939;Hayes et al, 2008) and may serve as a catalyst for outbreaks in surrounding stands or damage to nearby logs and other forest products. Bark beetles, such as the pine engraver (Ips pini Say), that can cause mortality in conifers, commonly colonize and reproduce in harvest debris (Hayes et al, 2008).…”

Pest Risk Analysis (PRA) for the territories of the European Union (as PRA area) on Bursaphelenchus xylophilus and its vectors in the genus Monochamus

“…However, early work in Canada indicated that several Monochamus spp. successfully attacked logs that had been left in the forest from September of the previous year, indicating that bark retains its attractiveness over winter (Morley, 1939). In Europe, studies by Tragardh (1939) on trees that had been damaged in a wind storm on 1 May were not attacked by M .…”

“…Throughout North America, Monochanzus spp. have a long history as secondary pests causing degradation of timber through the boring activities of the larvae and the introduction of blue-staining fungi (Morley, 1939;Raske, 1973;Gardiner, 1975). Any coniferous forest has a high probability of a resident population of Monochamus spp.…”