Table 3 LD50 values (µg/larvae)1 of the crude methanolic extract and isolated phenolic compounds from A. calamus against second instar S. litura larvae under laboratory conditions
Extract | Number of insects/dose (n) | LD501 | UCL | LCL | Chi-square | P-level |
|---|---|---|---|---|---|---|
A. calamus crude methanolic extract | 150 | 7.438 | 7.507 | 7.369 | 3.21 | 0.043 |
Pachypophyllin | 150 | 6.512 | 6.623 | 6.398 | 1.56 | 0.031 |
Galangin | 150 | 4.718 | 4.717 | 4.729 | 1.29 | 0.063 |
Chrysin | 150 | 2.752 | 2.821 | 2.683 | 0.77 | 0.089 |
4-Hydroxyacetophenone | 150 | 3.217 | 3.293 | 3.179 | 6.94 | 0.065 |
Control2 | 150 | – | – | – | – | – |