A comparative study between a commercial mixture compound and its individual active ingredients on the cotton leafworm, Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) on tomatoes under semi-field conditions

The Journal of Basic and Applied Zoology

Table 6 Effect of the tested compounds on Chitinase activity, α- and β- esterases in 4th instar larvae of S. littoralis after treatment with LC₅₀

Tested compounds	α-esterase (μg α-naphthol/min/g b.w.) (Mean ± S.E.)	β-esterase (μg β-naphthol/min/g b.w.) (Mean ± S.E.)
Heater (Lufenuron + Emamectin benzoate)	221.3 ± 0.9^a	250.6 ± 0.6^a
Pasha (Emamectin benzoate)	197.6 ± 0.3^c	216 ± 0.5^c
Cymax (Lufenuron)	205.3 ± 0.9^b	220.6 ± 0.6^b
Control	162 ± 1.1^d	210.3 ± 0.7^d
Df	3	3
F value	838.35802	837.97619
P	0.0000 ***	0.0000 ***

Means in the same column with the same letter(s) are not significantly different. (P < 0.05) (Tukey’s Multiple Range Test)
b.w., body weight
***Highly significant effect