Sumaro, KS (mesotrione, 480 g/l)

Mechanism of Action and Selectivity

Sumaro is formulated with 480 g/L of mesotrione, a high-efficiency active ingredient from the triketone class. Unlike conventional photosynthesis inhibitors, mesotrione targets the enzyme p-hydroxyphenylpyruvate dioxygenase (p-HPPD). By inhibiting this enzyme, the product halts the synthesis of carotenoids. Without these protective pigments, chlorophyll in weed tissues is rapidly degraded by sunlight. This process manifests as characteristic 'bleaching' of weed leaves, followed by plant death.

Why Suspension Concentrate?

The suspension concentrate (SC) formulation is engineered for optimal systemic performance. The finely milled active ingredient particles are designed to penetrate the leaf cuticle effectively and translocate throughout both the xylem and phloem. This systemic action ensures that the product reaches meristematic tissues, which is essential for controlling robust perennial broad-leaved weeds.

Application Technicals

The selectivity of Sumaro relies on maize's inherent ability to rapidly metabolize mesotrione into non-toxic compounds. This biological mechanism allows for wide-window post-emergence application. Key operational parameters include:

• Dosage: 0.25–0.5 L/ha, offering flexibility based on the weed spectrum and infestation density.
• Application Timing: Best results are achieved when applied between the 2nd and 8th leaf stages of maize.
• Regulation: Limited to 1 application per season to maintain optimal soil health and environmental sustainability.

Manufacturer Hangzhou Ruijiang Chemical Co., Ltd. focuses on high-purity synthesis of the active ingredient, significantly reducing the potential for phytotoxicity and ensuring stable performance under field conditions when application protocols are followed.