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Table 3 Percent reduction (%) of late instar larvae (Anopheles and culicine combined) after application of Bs WDG in different dosages in the dry and rainy season

From: Microbial larvicides for malaria control in The Gambia

  Rainy season Dry season
Day after application 0.5 kg/ha 1.0 kg/ha 2.5 kg/ha 5.0 kg/ha 0.5 kg/ha 1.0 kg/ha 2.5 kg/ha 5.0 kg/ha
1 100 100 100 100 96 96 100 100
2 100 100 96 100 100 100 100 95
3 100 100 89 68 100 100 100 100
4 100 100 68 85 100 100 100 100
5 60 44 52 55 100 100 88 100
6 59 0 86 69 76 100 96 60
7 11 0 62 2 4 68 89 84
8 9 0 74 0 40 100 91 94
9 - - 70 1 54 54 58 97
10 - - 36 0 0 17 60 86
11 - - - - 0 0 4 75
12 - - - - 0 48 0 70
13 - - - - 0 0 0 54
14 - - - - 0 0 - 66
15 - - - - 0 0 - -
16 - - - - 0 0 - -
17 - - - - 0 0 - -
18 - - - - 0 0 - -
  1. -, test was terminated earlier