Table 5. Herbicidal efficacy to glyphosate resistant weeds of tolpyralate.
| Compounds | Dose (g a.i./ha) | Herbicidal efficacy (%) | |||||
|---|---|---|---|---|---|---|---|
| AMATU | AMBTR | ERICA | |||||
| Sensitive | Resistant | Sensitive | Resistant | Sensitive | Resistant | ||
| Tolpyralate | 30 | 91 | 99 | 99 | 96 | 100 | 98 |
| Tembotrione | 92 | 64 | 80 | 99 | 99 | 100 | 99 |
| Mesotrione | 88 | 71 | 65 | 99 | 99 | 77 | 85 |
| Topramezone | 17 | 76 | 55 | 98 | 88 | 65 | 71 |
| Glyphosate | 800 | 94 | 40 | 78 | 9 | 84 | 0 |
Approximate leaf-stages of applied plants are followings: AMATU: 4–6 L, AMBTR: 4–6 L and ERICA: 5-6 cm. Tolpyralate 400SC, Tembotrione 420 g/L, Mesotrione 480 g/L and Topramezone 336 g/L formulations were used in this study. Visual assessments were conducted at 29–30 days after application.