Percent mortality of Synanthedon resplendens larvae In sycamore trees based on frass activity after treatment with Steinernema feltiae (sf) and S. bibionis (sb) at Rlveralde, October 1983. Eight trees per treatment.
| Nematode treatment | Active galleries pre-treatment | Active galleries post-treatment | % mortality |
|---|---|---|---|
| 0 | 488 | 423 | 7.0 |
| 4000/ml (sf)a | 479 | 446 | 6.9 |
| 8000/ml (sf)b | 307 | 277 | 9.8 |
| 4000/ml (sb)c | 422 | 366 | 13.6 |