9/23/08 The weed demo project at the old slash dump site on Haystack Dr is officially underway. To see the herbicide application strategy emailed by Steve and a map image and photo, press “Continue Reading” below.
After Steve alerted us to the herbicide spraying that Tim D’Amato (Larimer County), and Dr. Phil Westra (CSU) conducted on 9/23, I heading over the next day to take pictures and gps readings. Thanks to Wynne for alerting us to this persistant Canada thistle infestation and to Linda Bell for starting the ball rolling with this North Fork Weed Coop demonstration project.
Here is some very useful information Steve emailed on 9/23:
Tim D’Amato is at the Haystack Dr. canada thistle site as I type. They are using two different chemicals (Milestone and KJM) and they will treat both mowed and unmowed areas with each type. They will also leave a control area of unsprayed, mowed weeds to compare the 5 individual test cases. They might also adjust some dosing ranges.
Here are the test conditions (I have a diagram). These plots go from left to right as you look from the road:
30’ path of unmowed CT treated with Milestone at a rate of 7 oz. per acre
20’ path of unmowed CT treated with KJM at 2 oz. per acre
20’ path of mowed CT treated with KJM at 2 oz. per acre
60’ path of mowed CT entirely untreated (this would have been the “bone dry” section)
20’ path of mowed CT treated with Milestone at 6.25 oz. per acre
30’ path of unmowed CT treated with Milestone at 6.25 oz. per acre
40’ path of unmowed CT treated with Milestone at 7 oz. per acre
Before snowfall, I’d like some help in evaluating the plot, taking pictures, and sending an update to Tim and Dr. Phil. They will likely come back up to see for themselves as well.