Primus, SE

Dual-action herbicide mechanics: The «Primus, SE» profile

The efficacy of «Primus, SE» relies on the synergy between Florasulam and 2,4-D (in ester form). This combination elevates the product from a standard herbicide to a precise tool for intensive agriculture. Its systemic nature allows the active ingredients to quickly penetrate the leaf cuticle and translocate throughout the plant's vascular system, effectively shutting down growth points in susceptible weeds.

Technical composition breakdown

• Florasulam (ALS inhibitor): A potent compound that inhibits the acetolactate synthase enzyme. Practically, this halts cell division in weed meristems, preventing them from competing for water and nutrients with the crop immediately after application.
• 2,4-D (Auxin-like herbicide): Acts as a growth regulator. It induces uncontrolled cell division, leading to stem twisting, leaf deformation, and metabolic disruption, which is fatal to species such as common lambsquarters, pigweed, and cleavers.

Application and field utility

Formulated as a water-suspension concentrate, «Primus, SE» ensures excellent coverage and adhesion to leaf surfaces. As a selective post-emergence herbicide, it is optimized for use during the active growth phase of weeds (from the rosette stage for thistles to the 2-4 whorl stage for cleavers). At a dosage of 0.4–0.6 L/ha, the product demonstrates high selectivity, allowing winter wheat, winter barley, and corn to thrive without phytotoxic stress. With a Hazard Class 3 rating, the chemical profile is designed for professional use with a limit of one application per season, ensuring effective weed suppression with minimal impact on subsequent crop rotation.