LNZ Group·Growth Regulators
Topal
Topal is a growth regulator in the form of an emulsifiable concentrate with trinexapac-ethyl 250 g/L for wheat, barley and sunflower against lodging and for growth regulation of winter oilseed rape in autumn.
Main advantages
- Shorter internodes and a thicker stem — against lodging
- Sunflower at the 6–10 leaf stage — up to two treatments
- Winter oilseed rape at 4–6 leaves — autumn treatment
Overview
About this product
Trinexapac-ethyl, the active substance of Topal (250 g/L in an emulsifiable concentrate), inhibits the biosynthesis of gibberellins, the plant growth hormones. Internodes become shorter, the stem thickens and root system development is enhanced.
Winter wheat and barley are treated from tillering to flag leaf appearance, spring wheat and barley from tillering to the end of stem elongation; the rate for wheat is 0.4–0.6 l/ha, for barley 0.4–0.8 l/ha. Sunflower receives 0.3–0.6 l/ha at the 6–10 leaf stage, up to two times, and winter oilseed rape the same rate in autumn at the 4–6 leaf stage.
Pack size 5 l.
Application
Rate, timing and crops
- Rate
- wheat 0.4–0.6 l/ha
- barley 0.4–0.8 l/ha
- sunflower, winter oilseed rape 0.3–0.6 l/ha
- Timing
Winter wheat and barley: from tillering to flag leaf appearance; spring wheat and barley: from tillering to the end of stem elongation.
Sunflower: at the 6–10 leaf stage, up to two treatments.
- Crops
- Winter wheatSpring wheatWinter barleySpring barleySunflowerWinter oilseed rape
Figures from the manufacturer, LNZ Group. Source page
Register rates
Ministry order № 1116 of 03.06.2025
| Crop | Rate, L/ha | Max treatments |
|---|---|---|
| Пшениця озима | 0,4 – 0,6 л/га | 1 |
| Пшениця яра | 0,4 – 0,6 л/га | 1 |
| Ячмінь озимий | 0,4 – 0,8 л/га | 1 |
| Ячмінь ярий | 0,4 – 0,8 л/га | 1 |
| Sunflower | 0,3 – 0,6 л/га | 2 |
| Ріпак озимий | 0,3 – 0,6 л/га | 1 |
Пшениця озима
- Rate, L/ha
- 0,4 – 0,6 л/га
- Max treatments
- 1
Пшениця яра
- Rate, L/ha
- 0,4 – 0,6 л/га
- Max treatments
- 1
Ячмінь озимий
- Rate, L/ha
- 0,4 – 0,8 л/га
- Max treatments
- 1
Ячмінь ярий
- Rate, L/ha
- 0,4 – 0,8 л/га
- Max treatments
- 1
Sunflower
- Rate, L/ha
- 0,3 – 0,6 л/га
- Max treatments
- 2
Ріпак озимий
- Rate, L/ha
- 0,3 – 0,6 л/га
- Max treatments
- 1
Source: ministry order № 1116 of 03.06.2025, as published.
Specifications
Active ingredients and formulation
| Type | Growth Regulator |
|---|---|
Active ingredients
| |
| Formulation | EC · emulsifiable concentrateUkrainian label code КЕ |
| Target Crops | Winter wheat, Spring wheat, Winter barley, Spring barley, Sunflower, Winter rapeseed |
| Mode of action | Trinexapac-ethyl inhibits the biosynthesis of active gibberellins, the plant's growth hormones; internodes shorten, the stem thickens and root development is enhanced. |
| Registration | Re-registered 03.06.2025Ministry order № 1116 |
| Registrant | ТОВ «Дефенда» (Ukraine) |
| Manufacturer | LNZ Group |
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Questions & answers
What farmers ask most
- Yes. A ministry order of 03.06.2025 registered this product again. The order states no term, so the page gives no end date.
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