Poast® Ultra is the benchmark for safe, reliable and effective annual grass control.
Poast Ultra will control the following grasses:
Poast Ultra is labeled for use on 50 crops, including soybeans
Note: Don’t forget to purchase Merge® surfactant.
BASF conducts extensive research to determine the appropriate rate that will provide optimal control under a range of environmental conditions. Reduced rates are not recommended since they will probably provide inconsistent weed control.
Yes. Merge must always be added when Poast Ultra is used alone or tank-mixed with a broadleaf herbicide.
Normally, quackgrass should be sprayed in the 1- to 3-leaf stage for optimum weed control with Poast Ultra. If environmental conditions are good and the quackgrass is still actively growing Poast Ultra applied at the 4- to 5-leaf stage will provide acceptable control. A dense crop canopy will provide competitive pressure and aid control considerably.
The effectiveness of Poast Ultra should not be affected if spraying is delayed, even if the herbicide remains in the tank overnight. Ensure that proper agitation is carried out before recommencing spraying, to redistribute Poast Ultra or Merge that has settled out.
Allow 4-7 days between the application of Poast Ultra and any other chemical not recommended as a tank-mix combination on the label.
Poast Ultra is extremely rainfast. Only one hour is required following application. Additionally, dew has virtually no detrimental effect on Poast Ultra performance.
Poast Ultra is always crop safe, regardless of the environmental conditions. However, the performance of any herbicide is subject to environmental conditions. Increases in environmental stress, such as hot and dry weather, or particularly cool conditions will result in diminished herbicide performance. However, relative to other herbicides, Poast Ultra has proven to be the most effective across a broad range of environmental conditions.
Poast Ultra does not freeze. Ensure that containers are well shaken before use.
Poast Ultra is registered for use on alfalfa, however this tank-mix is not registered or recommended.