Skip to main content

Table 3 Larvicidal activity of neem oil formulation against mosquitoes larvae in field

From: Larvicidal activity of neem oil (Azadirachta indica) formulation against mosquitoes

Mosquito species Breeding sites Pre treatment density Percent reduction of larval density (mean ± sd)
Day-1 Day-2 Day-3 Week-1 Week-2 Week-3
Culex Pits 28.9 ± 10.6 95.9 ± 3.5 90.2 ± 6.9 87.2 ± 11.0 87.5 ± 8.2 85.9 ± 8.0 80.5 ± 7.3
  Tanks 26.8 ± 11.5 91.9 ± 5.8 93.2 ± 3.2 97.7 ± 1.9 92.4 ± 8.0 86.2 ± 8.2 80.7 ± 9.2
  Drains 115.7 ± 64.6 99.4 ± 0.6 98.8 ± 1.2 98.6 ± 1.4 84.9 ± 4.6 85.0 ± 11.8 77.8 ± 11.0
    95.5 ± 4.1 94.1 ± 4.3 94.5 ± 5.5 89.9 ± 2.5 85.7 ± 0.8 79.7 ± 1.6
Anopheles Pits 13.5 ± 7.5 96.2 ± 4.5 100 100 100 85.4 ± 14.1 76.6 ± 9.6
  Tanks 10.4 ± 5.7 98.2 ± 1.8 100 100 100 87.0 ± 9.7 77.7 ± 10.0
  Drains 13.0 ± 6.7 100 100 100 100 98.7 ± 1.3 97.0 ± 3.0
    98.1 ± 1.9 100 100 100 90.4 ± 7.2 83.8 ± 11.5