The herbicide for each job is determined by a vegetation management plan. We take into consideration the vegetation that needs to be controlled, land use, stakeholder’s concern, cost, and the safety of the herbicide to the applicator and livestock.
The blue dye allows the applicator and customer to easily identify what has been sprayed, and also minimizes overspray.
Depending on how much rain has fallen on the site, the effectiveness of the herbicide can be lessened if it rains within 2-3 hrs of the application. If this is the case, the site would be reassessed in ten to fourteen days and may need to be redone.
There are Health Canada approved herbicides available that have 30 min to 1 hour rainfast.
How quickly application results are evident depends on the type of herbicide used.
For example, Roundup affects the weed in two to four days with visible browning and deterioration within seven to ten days.
Cool weather can also slow the herbicide’s activity.
The longevity of the herbicide depends on the herbicide used and if it is a residual herbicide or not.
Absolutely not. Although it helps if you know what weeds you have before we come, we will identify the weeds before we apply to ensure the proper herbicides are used.
If you’d like to try to identify the weeds on your own, here is a copy of the “Weed Identification in Alberta” booklet that should help.
We have also included pictures of some common weeds in our Weed ID section.