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Agrilus anxius, the bronze birch borer, is a wood-boring buprestid beetle native to North America, more numerous in the warmer parts of the continent and rare in the north. [1] It is a serious pest on birch trees (Betula), frequently killing them. The river birch Betula nigra is the most resistant species, while other American birches are less so.
Birch dieback is a disease of birch trees that causes the branches in the crown to die off. The disease may eventually kill the tree. In an event in the Eastern United States and Canada in the 1930s and 1940s, no causal agent was found, but the wood-boring beetle, the bronze birch borer, was implicated in the severe damage and death of the tree that often followed.
Bronze birch borer is a major pest among birch species. [25] Under repeated infestation or stress to the tree from other sources, bronze birch borers may kill the tree. [25] The insect bores into the sapwood, beginning at the top of the tree and causing death of the tree crown. [26] The insect has a D-shaped emergence hole where it chews out of ...
Despite this, the borers can still damage the trees if they are weakened by other means. Between about 1930 and 1950, many gray birch trees, along with paper birch and yellow birch (Betula alleghaniensis), were weakened by birch dieback disease, which allowed for the bronze birch borer to attack and kill the trees. [11]
In others, the merit badge's name has been changed, with or without significant revision to the badge's requirements. In 2010, in celebration of Scouting's 100th anniversary, four historical merit badges were reintroduced for one year only—Carpentry, Pathfinding, Signaling, and Tracking (formerly Stalking). Bugling merit badge was briefly ...
Arboriculture – Control of the emerald ash borer, hemlock woolly adelgid, [17] and other insects that attack trees (including hemlock, maple, oak, and birch) [9] Home Protection – Control of termites, [3] [16] carpenter ants, cockroaches, and moisture-loving insects; Domestic animals – Control of fleas (applied to the back of the neck) [3]
Agrilus cuprescens, known generally as the rose stem girdler or bronze cane borer, is a species of metallic wood-boring beetle in the family Buprestidae. It is found in Europe and Northern Asia (excluding China) and North America.
Betula nigra, the black birch, river birch or water birch, is a species of birch native to the Eastern United States from New Hampshire west to southern Minnesota, and south to northern Florida and west to Texas. It is one of the few heat-tolerant birches in a family of mostly cold-weather trees which do not thrive in USDA Zone 6 and up.