Table 3 Estimates of the binomial distribution model of the bioinsecticides used alone and combined with octyl palmitate against S. littoralis, 4th instar larvae under field-laboratory conditions.

From: Synergistic activity of sunlight protectants on some biocontrol agents as a new approach to control the cotton leaf worm, Spodoptera littoralis (Boisduval)

Compounds used

B (Estimate)

Std. Error

Wald χ²

P-value

Predicted Mortality (%)

(Intercept)

− 0.57

0.20

8.20

0.004**

–

Dipel DF (Ref)

–

–

–

–

36

Dipel DF + Octyl palmitate

0.54

0.23

5.52

0.019*

49.5

Tracer

− 0.21

0.25

0.72

0.396

31

Tracer + Octyl palmitate

0.49

0.24

4.17

0.041*

48

Diacox

0.58

0.24

5.81

0.016*

50.7

Diacox + Octyl palmitate

1.54

0.27

32.62

0.000***

75.7

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