Comments on Small Grain Weed Control

Mark VanGessel, Extension Weed Specialist;

Small grains are larger than usual this time of year, which complicates decisions for weed management. Wheat can be a very competitive crop and so you need to determine whether there is a need to apply a herbicide.

  • Is the weed density sufficient to reduce yield? A few scattered weeds will not reduce yields or weeds much smaller than the wheat crop may not grow fast enough to compete with wheat.
  • Can you achieve adequate spray coverage of the weeds with the amount of wheat growth present?
  • Has wheat started to joint or reach a stage that limits application timing?
  • Are weeds still small and at a susceptible stage?

Fields need to be assessed on an individual basis to determine the need for a spring herbicide application.