Table 3.
Lethal concentrations (ppm) of four hexane plant extracts on Culex pipiens larval mortality, 24 and 48 h post-treatment.
| Time (h) | Treatment | LC50 (Low-Up.) | LC90 (Low-Up.) | LC95 (Low-Up.) | Slope ± SE | X2 (sign.) |
|---|---|---|---|---|---|---|
| 24 | D. stramonium |
139.36 (121.83–157.95) |
428.22 (362.40–527.24) |
588.67 (483.03–758.27) |
2.628 ± 0.198 | 4.447 (0.348) |
| C. annuum |
165.31 (145.73–186.19) |
492.29 (420.69–596.63) |
670.76 (557.49–845.87) |
2.704 ± 0.190 | 5.492 (0.240) | |
| N. tabacum |
120.45 (105.71–135.86) |
338.60 (289.89–410.74) |
453.86 (377.81–574.00) |
2.855 ± 0.219 | 8.164 (0.085) | |
| W. somnifera |
176.37 (155.23–198.98) |
546.69 (456.79–664.61) |
753.38 (623.86–953.72) |
2.608 ± 0.180 |
4.088 (0.394) |
|
| 48 | D. stramonium |
109.23 (78.02–143.04) |
290.17 (229.23–468.65) |
382.77 (302.47–674.88) |
3.020 ± 0.241 | 11.129 (0.025) |
| C. annuum |
122.16 (87.53–160.85) |
325.37 (256.91–526.55) |
429.52 (339.59–756.52) |
3.012 ± 0.232 | 11.680 (0.019) | |
| N. tabacum |
95.30 (83.43–107.98) |
248.79 (213.76–301.53) |
326.56 (272.87–413.20) |
3.075 ± 0.258 | 8.631 (0.071) | |
| W. somnifera |
125.85 (110.77–141.69) |
348.93 (299.17–422.35) |
465.88 (388.60–587.32) |
2.893 ± 0.220 | 6.605 (0.158) |