Mark VanGessel, Extension Weed Specialist; firstname.lastname@example.org
It’s the time of year when sprayers are used for applying soil-applied herbicides in soybeans then moving back into corn fields to spray postemergence herbicides. Be aware that any herbicide containing flumioxazin (i.e. Valor, Fierce, Envive, Panther, Trivence) needs to be cleaned out of your spray system before spraying sensitive crops. It is important to clean the tank as well as the hoses, booms, screens, and nozzles. Use ammonia or Valent Tank Cleaner. Small amounts of flumioxazin residue left in the tank can cause leaf burn on susceptible crops, such as corn.