Primus, SE

Synergistic Action: How Primus, SE Works

The efficacy of "Primus, SE" is based on the combination of two active ingredients: florasulam and 2,4-D (in ester form). This technical formulation achieves a synergistic effect where components not only complement each other but significantly amplify the impact on problematic weeds. Florasulam acts as an acetolactate synthase (ALS) inhibitor, blocking the synthesis of essential amino acids, while 2,4-D functions as an auxin-like herbicide, causing uncontrollable tissue growth and subsequent weed collapse.

Technical Advantages and Field Application

The systemic nature of this herbicide ensures that active ingredients quickly translocate through the plant's vascular system, reaching growth points even in the most resilient weed species. Key performance features include:

• Penetration Efficiency: Formulated as an Emulsifiable Concentrate (EC), the active ingredients easily penetrate the leaf cuticle wax layer, which is vital during variable weather conditions.
• Selective Control: "Primus, SE" is specifically designed for use on winter wheat, barley, sorghum, millet, and corn without causing phytotoxicity to the crop when applied at rates of 0.4–0.6 L/ha.
• Broad Spectrum: It effectively controls aggressive broadleaf weeds, including common lambsquarters, common ragweed, redroot pigweed, cleavers, and various thistle species.

A single application during the active weed growth phase is sufficient. Because of its systemic activity, the herbicide remains effective against mature thistle populations, a task where less specialized formulations often fail. This makes "Primus, SE" an essential tool for post-emergence weed management in cereal and corn production.