Response of the Bronze Birch Borer to Pruning Wounds on Paper Birch

Article Figures & Data

Table 1.

Adult bronze birch borers captured on traps placed over pruning wounds or branch bark ridges on unpruned branches.

Mean (SE) number of beetles per trap^* with indicated treatment
		Pruned only		Pruned + dressing		Dressing
Year	Sex	wound	control	wound	control	only	Control
1989	F	1.5(0.59)	0.1(0.09)	1.7(0.82)	0.3(0.19)		0.2(0.15)
	M	0.5(0.17)	0.3(0.33)	0.9(0.28)	0.2(0.11)		0.1(0.09)
1991	F	1.1(0.44)	0.1(0.09)	1.4(0.47)	0.3(0.12)	0.1(0.09)	0.1(0.09)
	M	0.4(0.17)	0.3(0.12)	0.5(0.17)	0.3(0.12)	0.1(0.09)	0.2(0.11)