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Pretilachlor 30% + Pyrazosulfuron ethyl 0.75% WG: A Selective Solution for Tough Weeds in Rice


Pretilachlor 30% + Pyrazosulfuron ethyl 0.75% WG is a powerful pre-emergent herbicide formulated to combat challenging weeds in rice fields. This herbicide offers selective control, ensuring that rice crops remain unharmed while effectively eliminating invasive weeds. Its unique formulation and dual mode of action make it a valuable tool in modern agriculture.

Quick Facts

  • Systemic Action: Pretilachlor 30% + Pyrazosulfuron ethyl 0.75% WG operates systemically, which means it is absorbed by the plant and circulated throughout its tissues. This characteristic enhances its effectiveness.
  • Target Sites: This herbicide acts on the coleoptile and radicle of germinating weed seeds. These are crucial growth points in young plants, making the herbicide particularly efficient at disrupting weed establishment.
  • Dual Mode of Action: The herbicide’s effectiveness is attributed to its dual mode of action, which involves inhibiting the biosynthesis of essential amino acids in weeds and interfering with mitosis and cell division processes.


Pretilachlor 30% + Pyrazosulfuron ethyl 0.75% WG is designed for use in rice fields, particularly in Direct Seeded Rice (DSR) cultivation.

Targeted Weeds

This herbicide effectively targets a range of problematic weeds commonly found in rice fields. Some of the notable weed species it controls include:

  • Alternanthera sessilis
  • Cyperus difformis
  • Cyperus iria
  • Echinochloa colonum
  • Eclipta alba
  • Eleusine indica
  • Fimbristylis miliaceae
  • Leptochloa chinensis
  • Ludwigia paviflora
  • Parthenium hysterophorus


Pretilachlor 30% + Pyrazosulfuron ethyl 0.75% WG comes in a Water-Dispersible Granule (WG) formulation. This formulation ensures easy handling, mixing, and application. The granules disperse in water, forming a homogeneous solution that can be evenly spread across the field.

Mode of Action

The herbicide’s effectiveness stems from its dual mode of action, which disrupts critical processes in weed growth:

  • Inhibition of Amino Acid Biosynthesis: By inhibiting the synthesis of essential amino acids, the herbicide starves the germinating weed seeds of vital nutrients required for growth. This significantly impairs weed establishment.
  • Interference with Mitosis and Cell Division: The herbicide’s impact on mitosis and cell division further hampers the growth and development of weed seedlings. This dual-pronged approach ensures comprehensive weed control.


  • Tackling Tough Weeds: Pretilachlor 30% + Pyrazosulfuron ethyl 0.75% WG is highly effective against resilient weed species such as Leptochloa, Eleusine, Cyperus, and Fimbristylis. These weeds are notorious for their ability to compete with rice crops.
  • Selective Control: The herbicide’s selective nature ensures that rice crops remain unaffected while it targets only the unwanted weeds. This is crucial for safeguarding the yield potential of the rice field.
  • Weed Resistance Management: The combination of two active ingredients with distinct modes of action makes this herbicide a valuable tool for managing weed resistance. Weeds are less likely to develop resistance when faced with multiple modes of action.

In conclusion, Pretilachlor 30% + Pyrazosulfuron ethyl 0.75% WG stands as a sophisticated solution for the persistent challenge of weeds in rice fields. Its systemic action, dual mode of action, and selective control make it an efficient choice for modern weed management strategies. By effectively tackling tough weeds while preserving the integrity of rice crops, this herbicide contributes to sustainable and productive agriculture.




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