Wheat Herbicides and Spring Applications

Pat Boren
CPS Tangent

It is that time of year again: time to give special attention to the developing weed problems in winter wheat. Your fieldman will be working with you to develop a weed control program for your winter wheat taking into account the two major areas of concern: grass and broadleaf weed control. The good news is that there are many options so a program can be tailored for specific weed situations.
  • Osprey, Powerflex, Axial, Maverick, Everest, etc
The main feature of all these herbicides is their control of Annual Ryegrass and Wild Oats. Each chemical has its strengths and weaknesses in regards to soil residual, Annual Bluegrass and Brome control. Some of the grass herbicides also have some broadleaf activity and some may be mixed with broadleaf herbicides.
  • Broadleaf Control Herbicides: MCPA, Banvel, Colt AS,Aim, Harmony, Hat-Trick, Express, Finesse, Huskie, etc
Hat Trick is a new herbicide that contains three active ingredients that results very broad spectrum weed control. Prickly Lettuce is a weed that is becoming more common and can be a problem in winter wheat even causing issues at harvest. Bedstraw is also a troublesome weed that shows up in wheat.

Last week Tanner posted about stripe rust showing up in wheat already.  With rust out there now and the level of pressure we saw last year, it should be a standard program to have a fungicide in the tank with your spring herbicides.  Last year was the first bad stripe rust year we've had in a while but we were able to gather some important data and learn/relearn a lot about the disease.  Early control is paramount to keeping the crop clean.  OSU has come out in support of early fungicides and the weather patterns have shaped up to indicate even higher pressure this year.

Your weed and disease control programs need to be developed based on the weed spectrum, disease pressure, and the stage of growth of both the crop and the weeds.  Here is a useful table I put together on herbicide options for wheat. Your CPS fieldman will be working with you to figure out the best program for your farm.