Molluscicidal Activity of Some Solanum Species Extracts against the Snail Biomphalaria alexandrina

Table 1

The results of molluscicidal evaluation of the 3 plants examined.

Plants	LD90 values for the snail used
(1) Solanum nigrum	100–200 ppm
(2) Solanum sinaicum	100–200 ppm
(3) Solanum villosum	200–400 PPm
(4) Positive control Niclosamide (Bayluscide)	0.20–0.8 ppm

Key: 0.1–10 ppm = very strong molluscicidal activity. 50–100 ppm = Moderate to strong. 100–200 ppm= Mild to moderate. 200–400 ppm = Weak to mild. Niclosamide (Bayluscide), used as (positive control) reference molluscicide, killed all the snails at a dose of 1 ppm. On the contrary, none of the snails (in the negative control) treated with deionized, dechlorinated water alone died.