Compatibility of entomopathogenic fungi and Azadirachta indica extract against the cotton pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae) under controlled conditions

Egyptian Journal of Biological Pest Control

Table 1 Percent mortality (mean ± SE, n = 5) of 2^nd instar Pectinophora gossypiella larvae due to Beauveria bassiana, Verticillium lecanii, Metarhizium anisopliae concentrations and Azadirachta indica extract (alone and in combination) at different exposure intervals. Means sharing with same lower case letters are not significantly different from each other at 0.05 level of significance, i.e., P < 0.05

Treatments	4 days	8 days	12 days
Bb1	22.27 ± 1.75p	28.93 ± 1.23nop	44.80 ± 2.04hi
Bb2	26.27 ± 2.24op	34.13 ± 2.14l	53.60 ± 1.95de
Vl1	24.67 ± 2.03p	31.33 ± 1.61mn	37.33 ± 2.08jk
Vl2	24.67 ± 1.98p	34.67 ± 2.43l	44.67 ± 2.24hi
Ma1	27.33 ± 1.73op	37.33 ± 1.91jk	46.67 ± 2.11fgh
Ma2	31.33 ± 2.03mn	39.33 ± 2.13jk	50.67 ± 2.76def
AI	23.33 ± 1.05p	30.67 ± 1.59nop	40.67 ± 2.23ij
Bb2 + AI	34.67 ± 1.21l	44.67 ± 1.92hi	60.67 ± 2.64c
Vl2 + AI	37.33 ± 1.91jk	48.67 ± 1.86fg	64.67 ± 1.80bc
Ma2 + AI	40.67 ± 3.38ij	54.67 ± 2.03de	66.67 ± 2.11b
Bb2 + Vl2 + Ma2 + AI	48.67 ± 2.29fg	57.33 ± 2.80cd	74.67 ± 2.43a
Control	0.00 ± 0.00q	1.33 ± 0.37q	2.67 ± 0.56q

Bb1 Beauveria bassiana (1 × 10⁶ conidia ml⁻¹), Bb2 Beauveria bassiana (1 × 10⁸ conidia ml⁻¹), Vl1 Verticillium lecanii (1 × 10⁶ conidia ml⁻¹), Vl2 Verticillium lecanii (1 × 10⁸ conidia ml⁻¹), Ma1 Metarhizium anisopliae (1 × 10⁶ conidia ml⁻¹), Ma2 Metarhizium anisopliae (1 × 10⁸ conidia ml⁻¹), AI Azadirachta indica extract