Mecvalan 750 RK

Mechanism of Action and Stem Architecture

The core of "Mekvalan 750 RK" by "Agroflex" is chlormequat chloride, a classic anti-gibberellin growth regulator. Unlike systemic fungicides, this product acts at the cellular level by blocking gibberellin biosynthesis in meristematic tissues. In practice, this results in the shortening of internodes, which is critical for winter grain crops.

Why it Matters: The Biomechanics of Resistance

The primary challenge for high-yield wheat and barley varieties is the risk of lodging during intensive mineral nutrition. "Mekvalan 750 RK" alters the plant's physiological profile:

• Lower Stem Reinforcement: The product thickens the straw walls, increasing their diameter and the density of mechanical tissues.
• Morphotype Modification: By shortening the lower internodes, the plant's center of gravity is lowered.
• Root System Development: The redistribution of growth resources stimulates root expansion, improving overall moisture uptake.

Practical Application

The product is supplied as an aqueous solution, ensuring instant solubility in tank mixtures and rapid absorption by the leaf surface. A dosage of 1.0–2.0 l/ha allows for flexible adaptation of the protection scheme to the specific agricultural background. In winter rapeseed, autumn application ensures the formation of a lower, more robust root collar, serving as the foundation for successful overwintering. Up to two applications (within defined limits) allow for precise control of crop development during peak growth stages, preventing overgrowth before the stem elongation phase.

Class 2 toxicity requires strict adherence to safety protocols during spraying, but it delivers predictable, stable results on large-scale fields where stand integrity is essential before harvest.