- ALS resistant kochia has increased dramatically in recent years.
- ALS resistance is spread by kochia pollen.
- Tumbling of mature plants spreads seeds
- Tillage and harvest equipment spread seeds and plants.
- Kochia plants produce an average of 14,600 seeds/plant.
- Assume all kochia is ALS resistant or will become resistant with repeated exposure to ALS inhibitor herbicides.
- Need an alternative MOA to control ALS resistant kochia (see below).
Potential Management Practices
- Thorough preplant tillage will control early emerging kochia and provide a uniform kochia stage at the first postemergence application.
- Use pre-emergence burndown herbicides for control of early emerging kochia.
- If practical plant known kochia problem fields last to allow more complete emergence, thus, allowing control by tillage or burndown herbicides.
- Norton soil applied were applicable provides excellent kochia control.
- Correct early identification of weeds is critical.
- Apply the correct post herbicide solution according to the weeds identified.
- It is strongly suggested to use conventional rates of Progress (TM) to control .25” dia kochia.
- Spray in late afternoon after temperatures decline.
- Adjust rates according to environmental conditions.
- Adjust rates according to sugar beet stage.
- Included Upbeet (TM) for improved control of redroot pigweed.
- Micro-Rates will not control ALS resistant kochia.
- If using Micro-Rates and kochia is present, then Progress Micro-Rates should be utilized. However, Progress Micro-Rates will not provide adequate
control of ALS resistant kochia.
- Kochia is a cool season weed, return to Micro-Rate applications when it stops emerging.
- Hand labor may not be needed to remove escaped kochia plants.
- Control kochia in other crops with herbicides that are not ALS inhibitors, ie., Bronate (TM) or Starane (TM) in cereals or Liberty (TM) in LibertyLink (TM)