Table 5 Effect of asaricin 1, isoasarone 2, and trans-asarone 3 against on the adult emergence of three stored product insect pests infesting rice.
Compounds | Concentrations (µg/mL) | Percentage of reduction in egg number | |||||
|---|---|---|---|---|---|---|---|
S. oryzae* | R. dominica* | P. interpunctella* | |||||
Mean number of adult emergence | % IR** | Mean number of adult emergence | % IR** | Mean number of adult emergence | % IR** | ||
Asaricin 1 | 1 | 19.25 ± 2.01 | 34.25 ± 1.30 d | 16.75 ± 2.17 | 41.10 ± 1.80 c | 28.50 ± 0.86 | 21.50 ± 2.25 d |
2 | 2.08 ± 1.04 | 89.25 ± 3.70 b | 1.52 ± 0.76 | 84.50 ± 2.90 b | 11.50 ± 2.36 | 59.25 ± 3.83 c | |
4 | 0.00 ± 0.00 | 100.00 ± 0.00 a | 0.00 ± 0.00 | 100.00 ± 0.00 a | 3.80 ± 1.20 | 87.37 ± 3.47 a | |
Isoasarone 2 | 1 | 15.00 ± 2.64 | 47.50 ± 1.47 c | 15.50 ± 2.53 | 44.70 ± 1.40 c | 21.50 ± 1.52 | 24.60 ± 2.10 d |
2 | 1.52 ± 0.76 | 86.00 ± 3.20 b | 1.73 ± 0.86 | 89.34 ± 2.80 b | 11.50 ± 1.52 | 59.50 ± 2.30 c | |
4 | 0.00 ± 0.00 | 100.00 ± 0.00 a | 0.00 ± 0.00 | 100.00 ± 0.00 a | 5.40 ± 0.98 | 78.98 ± 4.51 b | |
Trans-asarone 3 | 1 | 28.00 ± 1.54 | 2.25 ± 0.71 f | 25.30 ± 0.50 | 1.00 ± 0.40 f | 25.50 ± 1.52 | 1.17 ± 1.20 g |
2 | 25.00 ± 1.52 | 13.50 ± 2.10 e | 25.75 ± 2.88 | 17.75 ± 0.83 d | 24.50 ± 2.40 | 7.50 ± 0.04 f | |
4 | 26.50 ± 1.54 | 8.60 ± 1.02 e | 28.50 ± 1.73 | 9.25 ± 1.04 e | 26.25 ± 2.64 | 14.25 ± 2.50 e | |
