Lontrel A 300

Technology of systemic control for perennial weeds

The core efficacy of "Lontrel A 300" by August lies in its active ingredient, clopyralid, at a concentration of 300 g/l. As a systemic herbicide, it fundamentally changes the approach to combating stubborn perennials like Canada thistle and field thistle. Unlike contact pesticides, clopyralid mimics the action of auxins — natural plant growth hormones — inducing a "hormonal explosion" in weeds and effectively halting all developmental processes.

Mechanism of action and product architecture

The preparation enters the plant through the leaf surface and is rapidly distributed throughout the vascular system, reaching growth points and the root system. This is crucial when targeting species with deep root structures: the active component blocks cell division, leading to leaf curling and the death of meristematic tissues within hours of application.

• Selectivity: This selective herbicide allows for safe application on oats, barley, rapeseed, flax, and cabbage. The product does not suppress crops, targeting only identified weeds.
• Systemic properties: Deep penetration into the root system ensures the destruction of both the above-ground biomass and underground reproductive organs.
• Application flexibility: As a post-emergence herbicide, "Lontrel A 300" allows agronomists to assess actual field weed infestation levels before deciding on treatment.

Application guidelines

The aqueous solution form blends easily into tank mixes without forming sediment. A pre-harvest interval of just 1 day makes this product a highly efficient tool even for intensive agricultural operations. The application rate of up to 0.5 l/ha is optimal for controlling problematic weeds such as common ragweed, field bindweed, and various knotweed species. With a hazard class 3 rating, it requires standard safety measures, making it an economically justified, high-performance solution for crop protection.