Table 3 The concentration inhibiting feeding by 50% (FI50) after applying P. ribesioides allelochemicals from ethyl acetate fraction against S. exigua larvae (3rd instar) after 5 h exposure using leaf disc assay
CompoundsA | FI50 (µg/cm2) | LCL-UCLB | df | χ2 | P-value |
|---|---|---|---|---|---|
Piperine | 88.62 | > 100 | 3 | 14.71 | 0.002 |
Methyl piperate C | > 100 | > 100 | 3 | 2.02 | 0.568 |
N-Cinnamoyl-(2-phenylethyl) amine | 25.11 | 19.50–34.12 | 3 | 3.71 | 0.295 |
Pinostrobin | 14.39 | 10.7 – 52.19 | 3 | 32.91 | 0.001 |
Pinocembrin | 19.38 | 8.32 – 86.77 | 3 | 12.77 | 0.005 |
Cinnamic acid | 26.28 | 20.03–36.80 | 3 | 5.95 | 0.114 |
LemairaminC | > 100 | > 100 | 3 | 0.81 | 0.846 |
N,N-Diphenyl cinnamide | 49.74 | > 100 | 3 | 28.71 | 0.001 |
Methyl cinnamate | 56.38 | > 100 | 3 | 10.66 | 0.013 |
Cypermethrin D | 0.027 | 0.02–0.51 | 3 | 0.28 | 0.96 |