Table 1: Total larval mortality of early fourth instars (n=20) of Aedes aegypti when exposed to hexane extract of the leaf and stem of Achyranthes aspera for 24 h.

Hexane Extract Concentrations
(ppm)
0.1
Permethrin
1000 500 250 150 100 80 60 40 20 Control
Leaf Extract 20±0.00 20±0.00 20±0.00 20±0.00 16.50±0.64 15.50±0.28 7.50±0.28 4.00±0.50 0.50±0.28 0.0±0.0 0.0±0.0
Stem Extract 20±0.00 20±0.00 20±0.00 20±0.00 20±0.00 19.50±0.28 7.50±0.28 5.00±0.40 4.50±0.28 0.0±0.0 0.0±0.0

Total larval mortality ± SEM, Values are mean of three replicates.