Table 2.
Lethal concentrations and relative potencies of Hypera postica larvae to biorational insecticides.
| Treatments | Day | LC50 (g a.i./L) | C. I. (95%) | P > χ2 | Relative Potency (LC50;S/LC50;T)a |
|---|---|---|---|---|---|
| Entrust | 2 | 0.0000123 | 1.42538 × 10−5–0.0000432 | 0.9054 | 1 |
| Mycotrol ESOb | 4 | 0.163602 | 0.159619–0.167686 | 1.0000 | 7.52 × 10−5 |
| Met52 ECc | 4 | 0.23434 | 0.14327–1.17575 | 0.7271 | 5.25 × 10−5 |
| Aza-Direct | 4 | 0.08146 | 0.04730–0.12666 | 0.0221 | 0.000151 |
| Xpulse ODd | 4 | 0.01417 | 0.00573–0.02360 | 0.0229 | 0.000868 |
| Xpectro OD | 4 | 0.00109 | 0.0001385–0.00229 | 0.4189 | 0.011284 |
| Entrust WP | 4 | NDe | ND | ND | ND |
| Mycotrol ESO | 5 | 0.10845 | 0.08129–0.16632 | 0.2299 | 0.000113 |
| Met52 EC | 5 | 0.03441 | 0.02316–0.04705 | 0.0421 | 0.000357 |
| Aza-Direct | 5 | 0.01758 | 0.00407–0.03324 | 0.0317 | 0.0007 |
| Xpulse OD | 5 | 0.00371 | 0.0005850–0.00663 | 0.5906 | 0.003315 |
| Xpectro OD | 5 | 0.00172 | 0.00157–0.00188 | 1.0000 | 0.007151 |
| Entrust WP | 5 | ND | ND | ND | ND |
a
Ratios of the lethal concentrations of standard insecticide (Entrust WP) to the treatments at 50% mortality.
b
2 × 1013 viable spores per quart with weight estimate of 4.78 × 1012 grams per spore.
c
5 × 1010 viable conidia per gram of active ingredient and contains 5.5 × 109 colony forming units (CFU)/gram of product.
d
Beauveria bassiana Strain GHA (0.06%) contains ≥1 × 1011 viable spores per quart.
e
ND, no data due to single response values (100% mortality), and therefore could not be determined by statistical analysis as well as lethal ratios.