Estimated number of gypsy moth larvae and defoliation on oak trees treated with trunk barriers and burlap skirts.
Site | Number of larvae removed per tree a,b | Number of larvae per m2c | Number of larvae per tree c | Defoliation b |
---|---|---|---|---|
Harrisonburg | 35.4 ± 4.0 a | 94.1 ±21.5 a | 4,780 ± 2,041 a | 14.8 ±5.7 a |
Pomona | 11.2 ± 3.1 a | 83.9 ± 16.7 a | 4,908 ± 1,581 a | 20.8 ± 4.4 b |
Vienna | 5.7 ±3.1 a | 2I5.O± 17.0 b | 17,238 ± 1,610 b | 68.4 ± 4.4 c |