Table 1.

Percent mortality of hemlock woolly adelgid 5 months after soil injections were made around hemlocks using Merit 2F and Metasystox-R2.

% Mean mortality (±SD)
Sample locationb
TreatmentTotalTopBottom
Merit 2F95.9 ± 12.5aa96.2 ± 11.9a95.6 ± 13.0a
Metasystox-R284.9 ± 13.4b87.0 ± 12.7a82.8 ± 13.8b
Control56.5 ± 19.5c58.8 ± 22.0a54.3 ± 16.3a

  • ↵a Means within column sharing the same letter are not significantly different, (P<0.05; ANOVA/Fisher’s protected LSD).

  • ↵b Pairs in row sharing the same letter are not significantly different, (P<0.05; ANOVA).