Table 2. Toxicity test of methanol extract of bark of Tampoi ( B. macrocarpa).

Average of three replicates performed for each concentration
Concentration (ppm)	Log Concentration	Average of total larvae	Average of mortality	% Mortality	Probit	LC 50 (ppm)
500	2.6989	10,3	2.3	22.3	4.23	1577.89
250	2.3979	10,7	2.7	25.2	4.33
125	2.0969	10,3	3.3	32.0	4.53
62.5	1.7959	10,3	1	9.7	3.66
31.2	1.4948	10	4.3	43	4.82
15.6	1.1938	9,7	0	0	0
7.8	0.8928	9,3	2.7	29	4.45