Table 3: Molluscicidal activities of Azadiractha indica at different concentrations and time.

Exposure time (hrs)
Treatment(mg/l) 8 16 24 32 40 48
Control 0.00 ± 0.00a 0.00 ± 0.00a 0.00 ± 0.00a 0.00 ± 0.00a 0.00 ± 0.00a 0.00 ± 0.00a
0.4 0.00 ± 0.00a 0.00 ± 0.00a 0.00 ± 0.00a 0.00 ± 0.00a 10.00 ± 0.00b 20.00 ± 0.00b
0.8 0.00 ± 0.00a 0.00 ± 0.00a 10.00 ± 0.25b 10.00 ± 0.25b 10.00 ± 0.25b 20.00 ± 0.55b
1.2 0.00 ± 0.00a 10.00 ± 0.22b 10.00 ± 0.00b 20.00 ± 0.31c 20.00 ± 0.31b 30.00 ± 0.41c
1.6 10.00 ± 0.28b 10.00 ± 0.23b 20.00 ± 0.15c 20.00 ± 0.25c 20.00 ± 0.45b 40.00 ± 0.77d
2.0 10.00 ± 0.21b 20.00 ± 0.56c 30.00 ± 0.15d 30.00 ± 0.63d 40.00 ± 0.48c 50.00 ± 0.85e

Each value is a mean ± standard error of four replicate. Means followed by the same letter along the column are significantly different (P < 0.05) using Duncan's New Multiple Range Test.