Table 3.
Phytotoxicity on cactus pear of 1–6 tested at various concentrations with the cladode puncture method and evaluated based on the size of the necrotic lesions.
| Compound | Concentration (M) | Mean Lesion Area (mm2) 1 | Compound | Concentration (M) | Mean Lesion Area (mm2) 1 |
|---|---|---|---|---|---|
| 1 | 5.6 × 10−3 | 3.14 ± 0.00 | 4 | 5.2 × 10−3 | 6.28 ± 1.56 |
| 2.8 × 10−3 | 2.36 ± 0.79 | 2.6 × 10−3 | 2.36 ± 0.79 | ||
| 1.4 × 10−3 | 2.75 ± 0.68 | 1.3 × 10−3 | 3.14 ± 0.00 | ||
| 5.6 × 10−4 | 0.00 ± 0.00 | 5.2 × 10−4 | 0.00 ± 0.00 | ||
| 2.8 × 10−4 | 0.00 ± 0.00 | 2.6 × 10−4 | 0.00 ± 0.00 | ||
| 2 | 4.8 × 10−3 | 11.00 ± 1.57 | 5 | 2.5 × 10−3 | 11.58 ± 1.57 |
| 2.4 × 10−3 | 9.81 ± 1.75 | 1.2 × 10−3 | 7.07 ± 1.67 | ||
| 1.2 × 10−3 | 11.78 ± 1.36 | 6.2 × 10−4 | 6.28 ± 1.32 | ||
| 4.8 × 10−4 | 5.50 ± 0.79 | 2.4 × 10−4 | 3.53 ± 0.68 | ||
| 2.4 × 10−4 | 7.07 ± 0.00 | 1.2 × 10−4 | 2.94 ± 1.40 | ||
| 3 | 5.2 × 10−3 | 3.14 ± 0.00 | 6 | 4.8 × 10−3 | 11.78 ± 1.60 |
| 2.6 × 10−3 | 2.61 ± 0.93 | 2.4 × 10−3 | 9.62 ± 1.55 | ||
| 1.3 × 10−3 | 3.14 ± 0.00 | 1.2 × 10−3 | 9.62 ± 1.55 | ||
| 5.2 × 10−4 | 0.00 ± 0.00 | 4.8 × 10−4 | 4.51 ± 1.61 | ||
| 2.6 × 10−4 | 0.00 ± 0.00 | 2.4 × 10−4 | 3.50 ± 0.68 |
1 Mean of eight replications (two cladodes from distinct plants and four punctures per each cladode).