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Table 1 Mortalities of B. pfeifferi snails exposed to different concentrations of A. aspera aqueous leaf extract for 24, 48 and 72 h

From: Molluscicidal effect of Achyranthes aspera L. (Amaranthaceae) aqueous extract on adult snails of Biomphalaria pfeifferi and Lymnaea natalensis

Concentration (ppm) 24 h 48 h 72 h
Exposed Dead Exposed Dead Exposed Dead
0 30 0 30 0 30 0
25 30 0 30 0 30 0
50 30 3 30 4 30 7
75 30 12 30 15 30 17
100 30 30 30 30 30 30
200 30 30 30 30 30 30
400 30 30 30 30 30 30