Molluscicidal activities of Bridelia ferruguinea at different exposure time.

Table 2: Molluscicidal activities of Bridelia ferruguinea at different exposure time.

Exposure time (hrs)
Treatment(mg/l)	8	16	24	32	40	48
Control	0.00 ± 0.00^a	0.00 ± 0.00^a	0.00 ± 0.00^a	0.00 ± 0.00^a	0.00 ± 0.00^a	0.00 ± 0.00^a
0.4	0.00 ± 0.00^a	10.00 ± 0.00^b	20.00 ± 0.28^b	40.00 ± 0.00^b	40.00 ± 0.28^b	40.00 ± 0.25^b
0.8	10.00 ± 0.00^b	20.00 ± 0.29^c	40.00 ± 0.00^bc	40.00 ± 0.29^b	50.00 ± 0.29^b	60.00 ± 0.48^c
1.2	20.00 ± 0.29^b	40.00 ± 0.00^d	40.00 ± 0.25^c	50.00 ± 0.29^b	70.00 ± 0.25^c	70.00 ± 0.25^c
1.6	30.00 ± 0.25^bc	40.00 ± 0.29^d	60.00 ± 0.57^d	70.00 ± 0.00^c	80.00 ± 0.00^c	90.00 ± 0.29^d
2.0	40.00 ± 0.25^c	50.00 ± 0.00^d	80.00 ± 0.00^e	90.00 ± 0.00^d	100.00 ± 0.00^d	100.00 ± 0.00^e

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.