Winsta 30WP

Sale priceRs.950.00


Winsta 30WP is a 60gm water-dispersible (WP) herbicide produced by FMC, specifically formulated for pre- and post-emergence weed control in rice fields. Its strength lies in the combination of two active ingredients:

  • Bispyribac-Sodium (18% w/w): This ALS (acetolactate synthase) inhibitor disrupts the production of essential amino acids (valine and isoleucine) within weeds, ultimately halting their cell division and growth.
  • Bensulfuron-Methyl (12% w/w): This AHAS (acetohydroxyacid synthase) inhibitor works in a similar way to bispyribac-sodium, further hindering amino acid synthesis and hindering weed development.

Mode of Action and Selectivity:

Winsta 30WP acts as a systemic herbicide, meaning it's absorbed by the weeds through their leaves and roots and translocates throughout the plant. This systemic action ensures effective control even when weeds haven't come into direct contact with the spray.

The selectivity of Winsta 30WP for rice lies in its rapid metabolism within the rice plant. While the herbicide disrupts weed growth, rice can quickly break it down and avoid harm.


  • Broad-Spectrum Control: Winsta 30WP effectively controls a wide range of annual and perennial weeds and sedges commonly found in rice fields.
  • Pre- and Post-Emergence Control: The dual action of Winsta 30WP allows for application before weed emergence (pre-emergence) or after weeds have emerged (post-emergence), providing flexibility in weed management strategies.
  • Systemic Action: Ensures control even if weeds haven't directly contacted the spray.
  • Selective for Rice: Rapidly metabolized by rice plants, minimizing risk of crop damage.

Important Considerations:

  • Application Rate: The recommended application rate for Winsta 30WP is 60 grams per acre. However, it's crucial to always refer to the product label for specific instructions based on local regulations and weed pressure.
  • Safety Precautions: Winsta 30WP is a pesticide and should be handled with care. Always follow the label instructions for safe use, storage, and disposal.
  • Resistance Management: To prevent weed resistance development, consider using Winsta 30WP as part of an integrated weed management (IWM) program that incorporates diverse weed control strategies like crop rotation and mechanical weeding.

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