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Table 4 Larvicidal activity of neem oil formulation against Aedes mosquitoes in field

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

Breeding sites

Pre treatment larval density

pH

Percent reduction of larval density (Mean ± sd)

Day-1

Day-2

Day-3

Day-7

Tyres

10.3 ± 4.1

8.0–9.0

94.3 ± 4.5

98.6 ± 1.4

100

100

Machinery scraps

14.5 ± 8.6

8.0–9.0

96.0 ± 3.0

100

100

100

Iron container

19.2 ± 5.7

8.5

98.1 ± 1.5

100

100

100

Iron box

11.0 ± 6.0

8.0–8.5

96.9 ± 2.0

100

100

100

Iron tanks

9.0 ± 2.6

8.0–8.5

85.2 ± 6.5

100

100

100

Plastic scrap

6.0

8.5

100

100

100

100

   

95.1 ± 5.2

99.7 ± 0.3

100

100

  1. Total replicates: 21