Plant extracts
LC
50
(ppm; LCL-UCL)
LC
90
(ppm; LCL-UCL)
χ
2
(df=4)
Slope ± SE
Aloe pirottae
176.817 (129.560 - 307.093)
319.802 (229.932 - 628.162)
1.787*
1.564 ± 0.206
Brassica nigra
128.654 (97.353 - 185.462)
264.787 (201.813 - 416.425)
10.517*
1.298 ± 0.160
Oreosyce africana
18.743 (10.974 -27.735)
39.663 (29.823 - 72.346)
20.935*
2.691 ± 0.270
Piper capense
24.305 (21.120 - 27.903)
46.327 (40.722 - 54.782)
15.920*
2.854 ± 0.264
Table 5:
Adulticidal effect of methanolic extract of the four local plants against Anopheles arabiensis with its respective lethal concentrations, confidence intervals (95%), chi-square, slope and standard error after an exposure of 24 hours.
