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Table 2 Pathogenicity parameters of Metarhizium rileyi to larval instars of Helicoverpa armigera after 7 days of treatment

From: Evaluation of Metarhizium rileyi Farlow (Samson) impregnated with azadirachtin and indoxacarb against Helicoverpa armigera (Hubner)

Larval instars LC50 95% fiducial limits (LC50) LC90 95% fiducial limits (LC90) Regression equation χ2 calculated χ2 tabulated
1st 5.51 × 103 1.65 × 103 and 1.62 × 104 2.86 × 106 4.93 × 105 and 8.04 × 107 Y = 0.49X − 1.76 0.44 7.81
2nd 1.86 × 104 5.85 × 103 and 6.87 × 104 1.56 × 107 1.79 × 106 and 1.27 × 109 Y = 0.43X − 1.87 0.25 7.81
3rd 2.81 × 105 6.77 × 104 and 1.11 × 106 1.72 × 109 1.37 × 108 and 2.53 × 1011 Y = 0.33X − 1.84 0.38 9.48
4th 5.55 × 105 1.44 × 105 and 2.35 × 106 2.87 × 109 2.19 × 108 and 4.41 × 1011 Y = 0.35X − 1.97 0.17 9.48