Skip to content

Coragen / Ferterra (Chlorantraniliprole)

Coragen 18.5% SC and Ferterra 0.4% GR are FMC's foliar and granule formulations of chlorantraniliprole, the foundational anthranilic diamide insecticide. The pair is the standard treatment package for paddy stem borer and leaf folder management in India.

Composition / Active ingredient

  • Active ingredient: Chlorantraniliprole
  • Formulations: Coragen 18.5% SC (foliar spray); Ferterra 0.4% GR (granule)
  • Chemical class: Anthranilic diamide

Mode of action

Chlorantraniliprole binds and activates insect ryanodine receptors (RyRs), causing unregulated release of stored calcium from sarcoplasmic reticulum into muscle cells. The result is muscle contraction failure, feeding cessation, lethargy and paralysis. It is classified under IRAC Group 28. The receptor binding affinity in vertebrates is several thousand times lower than in insects, giving an excellent mammalian-safety profile.

Target use and dose

In paddy, Coragen is sprayed at ~60 ml/acre (150 mL/ha) in 200 L water at panicle initiation or first sign of dead hearts/whorl damage; Ferterra is broadcast at 4 kg/acre at transplanting or tillering, providing 25-30 days of soil-water-based systemic protection. Both formulations control yellow stem borer and leaf folder; foliar Coragen is also used against Helicoverpa, Spodoptera and fruit borers in cotton, vegetables and pulses.

Safety and regulatory status

Both products are CIBRC-registered and carry a "Caution" (green-band) label. Standard resistance-management practice is to limit Group 28 sprays to two per season and rotate with Cartap Hydrochloride (Group 14), Fipronil (Group 2B) or Triflumezopyrim Pexalon (Group 4E) for planthopper-borer complex.

See also: Chlorantraniliprole, Coragen Chlorantraniliprole, Ampligo, Cyantraniliprole Benevia, Triflumezopyrim Pexalon.

References

  1. How to Use FMC Coragen for Stem Borer in Paddy. Agrochemicalinfo.
  2. Chlorantraniliprole 18.5% SC in paddy ecosystem. Scientific Reports (2023).