| Ranking | Effect on weeds | Effect on crops |
| 2 | Very good control | Very light symptoms |
| 3 | Good control | Light symptoms |
| 4 | Enough | Symptomswith no affected yields |
| Acceptability limits | ||
| 5 | Medium control | Medium damage |
| 6 | Regular control | High damage |
| 7 | Poor control | Very high damage |
| 8 | very poor control | Severe damage |
| 9 | Without effect | Death |
| Values | Weed control (%) | Crop Phytotoxicity (%) |
| 1 | 99.0 - 100.0 | 0.0 - 1.0 |
| 2 | 96.5 - 99.0 | 1.0 - 3.5 |
| 3 | 93.0 - 96.5 | 3.5 - 7.0 |
| 4 | 87.5 - 93.0 | 7.0 - 12.5 |
| 5 | 80.0 - 87.5 | 12.5 - 20.0 |
| 6 | 70.0 - 80.0 | 20.0 - 30.0 |
| 7 | 50.0 - 70.0 | 30.0 - 50.0 |
| 8 | 1.0 - 50.0 | 50.0 - 99.0 |
| 9 | 0.0 - 1.0 | 99.0 - 100.0 |