Table 3 Toxicity of Bacillus thuringiensis isolates of spore crystal mixture (SCM) against three polyphagous mungbean pests
S. no. | Isolates | LC 50 (CFUs/ml) | Slope | Pearson χ2 | Degrees of freedom | 95% Fiducial limits | LC95(CFUs/ml) |  Toxicity index | |
|---|---|---|---|---|---|---|---|---|---|
Lower | Higher | ||||||||
Bihar hairy caterpillar, Spilosoma obliqua | |||||||||
1 | HD1 | 5.83 × 103 | 0.7807 ± 0.2790 | 0.53 | 2 | 2.92 × 103 | 1.67 × 105 | 7.46 × 105 |  |
2 | Ak2.IIPR | 3.34 × 103 | 2.0342 ± 0.5090 | 3.72 | 2 | 2.72 × 103 | 5.21 × 103 | 2.15 × 104 | 174.55 |
3 | F8.IIPR | 1.99 × 103 | 6.0384 ± 1.6063 | 1.84 | 2 | 1.87 × 103 | 2.19 × 103 | 3.73 × 105 | 292.96 |
4 | F5.IIPR | 5.18 × 103 | 0.7252 ± 0.3057 | 0.12 | 2 | 2.75 × 103 | 9.78 × 105 | 9.61 × 105 | 112.55 |
5 | F6.IIPR | 10.23 × 103 | 0.8689 ± 0.3839 | 1.12 | 2 | 4.98 × 103 | 7.85 × 107 | 7.99 × 105 | 56.99 |
Helicoverpa armigera | |||||||||
1 | HD1 | 3.33 × 103 | 1.0180 ± 0.2236 | 1.00 | 3 | 2.35 × 103 | 6.17 × 103 | 1.75 × 105 |  |
2 | Ak2.IIPR | 2.93 × 103 | 2.644 ± 0.3656 | 3.21 | 3 | 2.57 × 103 | 3.39 × 103 | 1.23 × 104 | 113.65 |
3 | F8.IIPR | 2.22 × 103 | 5.904 ± 0.8455 | 0.72 | 3 | 2.09 × 103 | 2.38 × 103 | 4.21 × 103 | 150.00 |
4 | F5.IIPR | 6.82 × 103 | 1.992 ± 0.3420 | 3.83 | 3 | 5.16 × 103 | 11.19 × 103 | 4.56 × 103 | 48.83 |
5 | F6.IIPR | 5.06 × 103 | 2.135 ± 0.6510 | 7.89 | 3 | 3.26 × 103 | 1.60 × 1010 | 29.82 × 103 | 65.81 |
Spodoptera litura | |||||||||
1 | HD1 | 5.31 × 103 | 4.165 ± 1.6943 | 0.2034 | 1 | 4.70 × 103 | 7.80 × 103 | 13.17 × 103 |  |
2 | Ak2.IIPR | 4.65 × 103 | 6.312 ± 1.8306 | 0.0374 | 1 | 3.90 × 103 | 5.04 × 103 | 8.47 × 103 | 114.19 |
3 | F8.IIPR | 2.52 × 103 | 3.247 ± 1.37 | 1.0009 | 1 | 718.82 | 2.96 × 103 | 8.07 × 103 | 210.71 |