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2. Dendroctonus rufipennis - Wikipedia

   en.wikipedia.org/wiki/Dendroctonus_rufipennis

   The spruce beetle is the most serious pest of mature and overmature interior spruce in British Columbia; [8] small-diameter, rapidly growing trees were least susceptible to attack or death from spruce beetle, and the greater susceptibility of large-diameter, slowly-growing trees was more closely related to recent radial growth than to diameter. [9]

3. Monochamus scutellatus - Wikipedia

   en.wikipedia.org/wiki/Monochamus_scutellatus

   Monochamus scutellatus, commonly known as the white-spotted sawyer or spruce sawyer or spruce bug or a hair-eater, [1] is a common wood-boring beetle found throughout North America. [2] It is a species native to North America.

4. Christmas tree pests and weeds - Wikipedia

   en.wikipedia.org/wiki/Christmas_tree_pests_and_weeds

   Rotary mowing is designed to cut unwanted vegetation 5–7 cm (2–3 inches) above the surface of the soil while flailing cuts the vegetation near the soil surface. [19] This method of weed control reduced the loss of soil moisture and nutrients by reducing the size and the growth of the weeds. [19]

5. Rocky Mountain bark beetle infestation - Wikipedia

   en.wikipedia.org/wiki/Rocky_Mountain_bark_beetle...

   In response to the unprecedented spread of bark beetles in the Rocky Mountains and other parts of the western United States, the U.S. Forest Service formed the Western Bark Beetle Research Group (WBBRG) in 2007—a collaboration between scientists from three research stations that pools knowledge and resources to better understand the threat and eventually develop a strategy to combat it. [10]

6. Dendroctonus micans - Wikipedia

   en.wikipedia.org/wiki/Dendroctonus_micans

   Dendroctonus micans, the great spruce bark beetle, is a species of bark beetle native to the coniferous forests of Europe and Asia. The beetles burrow into the bark of spruce trees and lay eggs which develop into larvae that feed on the woody layers under the bark.

7. Rhizophagus grandis - Wikipedia

   en.wikipedia.org/wiki/Rhizophagus_grandis

   Rhizophagus grandis is a species of predatory beetle in the family Monotomidae. [1] R. grandis is a specialist predator on the larvae of the great spruce bark beetle (Dendroctonus micans), a pest of spruce trees (Picea), and is found in Eurasian forests where its prey is found.