Bensulfuron Methyl 60% DF is a highly effective, selective systemic herbicide used primarily in rice cultivation (transplanted and direct-seeded) to control a wide range of annual and perennial broadleaf weeds and sedges. It belongs to the sulfonylurea class and operates as an Acetolactate Synthase (ALS) inhibitor, which stops the production of essential amino acids, causing weed growth to cease shortly after application.
Key Benefits of Bensulfuron Methyl 60% DF:
Broad-Spectrum Weed Control: Highly effective against problematic rice weeds such as sedges (e.g., Cyperus spp.) and broadleaf weeds (e.g., Ludwigia parviflora, Marsilea quadrifolia).
High Efficiency at Low Doses: Due to its 60% concentration, it provides superior, broad-spectrum control at lower application rates (e.g., 60-75 g a.i./ha) compared to many traditional herbicides.
Pre- and Early Post-Emergence Action: It can be applied within 34 days after rice transplanting (DAT) or even earlier, acting on weeds via both roots and foliage.
Safety for Rice Crop: It is highly selective, meaning it controls weeds while remaining safe for the rice crop when used at recommended doses.
High Economic Return: Studies show that its use leads to better, cleaner paddy fields, producing higher grain yields (up to 19.7% higher) and better Cost-Benefit ratios (e.g., 1.74 to 3.48) compared to manual weeding or standard farmer practices.
Ideal for Mixed Formulations: It is frequently tank-mixed with herbicides like pretilachlor or butachlor to broaden its efficacy to include grasses, providing comprehensive weed management (sedges + broadleaf + grasses).
Application Details:
Target Crops: Primarily transplanted rice, wet direct-sown rice, and some cereals.
Dosage: Generally used around 60g a.i./ha (or a commercially mixed formula like BSM 0.6% + Pretilachlor 6% GR at 52.5-60 g a.i./ha).
Formulation: DF (Dry Flowable), allowing easy application as a spray or mixed with sand (if GR formulation).
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