Table 1 Virulence of isolates of the Metarhizium anisopliae, Beauveria bassiana, Verticillium lecanii, and Trichoderma harzianum towards the two-spotted spider mite, Tetranychus urticae
Fungal conidial concs/ml | LC50 (conidia/ml) | LC90 (conidia/ml) | *Toxicity index (%) | Slope | **Confidence intervals of LC50 (ppm) | ||
|---|---|---|---|---|---|---|---|
LC50 | LC90 | Upper | Lower | ||||
Metarhizium anisopliae | 4.6 × 105 | 2.4 × 108 | 100 | 100 | 0.469 | 9.9 × 105 | 1.6 × 105 |
Beauveria bassiana | 3.3 × 106 | 7.8 × 109 | 13.94 | 3.07 | 0.380 | 8.4x106 | 1.3 × 106 |
Verticillium lecanii | 5.2 × 106 | 2.1 × 109 | 8.85 | 11.43 | 0.489 | 1.1x107 | 2.6 × 106 |
Trichoderma harzianum | 9.4 × 106 | 3.5 × 1010 | 4.89 | 0.68 | 0.358 | 3.1x107 | 3.7 × 106 |