Molluscicidal activity of the oil extracts of Tetraplura tetraptera, Bridelia ferruguinea and Azadiractha indica.

Table 4: Molluscicidal activity of the oil extracts of Tetraplura tetraptera, Bridelia ferruguinea and Azadiractha indica.

Azadiractha indica

Treatment (mg/l)	% Mortality + S.E	LC₅₀ (mg/l) + S.E	LC₉₀ (mg/l) + S.E	P-value
*Tetraplura tetraptera*
Control	0.00 ± 0.00
0.4	30.42 ± 0.13
0.8	47.50 ± 0.18	0.43 ± 0.41	0.86 ± 0.65	0.03
1.2	65.00 ± 0.29
1.6	73.75 ± 0.19
2.0	80.83 ± 0.13
*Bridelia ferruguinea*
Control	0.00 ± 0.00
0.4	31.25 ± 0.14
0.8	40.42 ± 0.23	0.61 ± 0.55	1.36 ± 0.87	0.01
1.2	54.58 ± 0.22
1.6	65.83 ± 0.23
2.0	78.33 ± 0.04
*Azadiractha indica*
Control	0.00 ± 0.00
0.4	5.00 ± 0.00
0.8	7.92 ± 0.13	1.93 ± 3.09	3.67 ± 9.01	0.00
1.2	13.75 ± 0.19
1.6	19.58 ± 0.19
2.0	28.75 ± 0.14