The Journal of Basic and Applied Zoology

Table 3 Mean lethal time (LT) for different concentrations of chlorpyrifos (Pyrinex) and age of Residues

From: Acute and residual concentration-dependent toxicities of some selected insecticides to adult Bactrocera invadens Drew, Tsuruta and White (Diptera: Tephritidae)

		Mean ± S. E. lethal time (min)
Age of residue	Concentration (ml L⁻¹)	LT₅₀	LT₉₀
	0.9	66.33 ± 16.50	74.67 ± 9.60
	1.0	39.33 ± 9.39	56.67 ± 2.40
	1.1	29.67 ± 7.13	43.66 ± 6.64
	LSD (P < 0.05) f-value p	33.06 19569.51 < .001	19.43 56073.58 < .001
3- DOTP	0.0	> 2880.00 ± 0.00	> 2880.00 ± 0.00
	0.9	38.00 ± 4.58	53.00 ± 9.00
	1.0	33.33 ± 4.41	31.00 ± 3.00
	1.1	19.33 ± 5.28	31.00 ± 3.00
	LSD (P < 0.05) f-value p	13.44 119600.00 < .001	17.06 73617.82 < .001
6-DOTP	0.0	> 2880.00 ± 0.00	> 2880.00 ± 0.00
	0.9	34.33 ± 2.33	48.33 ± 4.10
	1.0	37.33 ± 1.20	50.00 ± 6.11
	1.1	26.33 ± 1.46	35.33 ± 1.33
	LSD (P < 0.05) f-value p	5.00 900800.00 < .001	12.19 143800.00 < .001

Legend: FTP freshly treated panels, 3-DOTP 3-day-old-treated panels, 6-DOTP 6-day-old-treated panels

Back to article page