If you are managing fall armyworm (FAW) in maize, you may have noticed that the permit for Affirm® (emamectin benzoate) (PER93226) had disappeared from the APVMA permits portal.
PER93226 was temporarily suspended whilst clarification was sought around withholding period (WHP) and use patterns.
While PER93226 is now back on the APVMA permits list, it is important to note it has been updated with an additional restraint on the use of Affirm (i.e. “DO NOT apply after flag leaf emergence”), applicable to its use in wheat and similar grains.
The updated permit runs from 10 February to 31 August 2023, and its current withholding periods for crops are:
Harvest:
- Wheat, similar grains, and pseudo cereals without husks- Not required when used as directed (DO NOT apply after flag leaf emergence (BBCH39).
- Maize Cereals- Do not harvest for 6 weeks.
Grazing:
- Wheat, similar grains, and pseudo cereals without husks- Do not graze or cut for stock food for 6 weeks after application.
- Maize Cereals- Do not graze or cut for stock food for 21 days after application.
Further information
Read the full permit (pdf file) at the APVMA Permits portal
Read more about fall armyworm and its management at the Beatsheet.