Agricultural Herbicide with Dual Mode of Action Addresses ALS-Resistant Weeds in Brazilian Soybean

Brazilian soybean growers face a problem that keeps getting worse: weeds that survive ALS-inhibiting herbicides. Species like Echinochloa crus-galli and Amaranthus palmeri have developed metabolic resistance to acetolactate synthase inhibitors across multiple states, forcing farmers into more spray passes, higher costs, and yield losses that can reach 30% when control fails during the critical first 40 days after emergence.

An agricultural herbicide that pairs Trifloxysulfuron 10 g/L with Haloxyfop-P-Methyl 100 g/L in OD formulation brings two distinct modes of action to the same tank. Registered under PD20130366 and PD20210910, the combination targets weeds that have adapted to single-mode programs.

Two Modes Where One Is No Longer Enough

Trifloxysulfuron inhibits ALS, but the inclusion of Haloxyfop-P-Methyl adds a second mechanism — suppression of meristematic tissue in grass species via ACCase pathway disruption. Weeds that evolved metabolic resistance to ALS inhibitors face a completely different biochemical attack from the grass herbicide component. This is not stacking the same mode at a higher rate; it is a genuinely separate lethal mechanism.

Soybean tolerates the combination because trifloxysulfuron is rapidly metabolized into non-active compounds within the crop, while haloxyfop-P-methyl is inherently safe for broadleaf crops at labeled rates.

OD Formulation for Large-Scale Application

Brazilian soybean operations often cover thousands of hectares. The OD (Oil Dispersion) formulation maintains stable suspension in large-capacity spray tanks during extended application runs, where equipment may sit loaded for hours between fields. No separation means no settling at the bottom of the tank and no uneven distribution across the boom width.

Compliance and Logistics

The product carries COA and MSDS certification. Monthly supply capacity reaches 100,000 kg. Packaging options from 250 mL to 200 L drums accommodate both trial programs and full-season procurement. Payment by T/T or L/C, with delivery within 15–20 working days. MOQ is 1,000 L.

About Averstar

Averstar supplies crop protection chemistry for global agriculture, with herbicide solutions designed for soybean, cotton, and sugarcane systems facing resistance pressure