Canada Thistle An Issue In Post-Harvest Weed Control

Oct 06, 2017

Now that harvest activities are starting to wrap up some producers are thinking about post-harvest weed control.

One of the biggest post-harvest weed control issues tends to be Canada Thistle.

John Ippolito - a Regional Forage Specialist with Saskatchewan’s Ministry of Agriculture - says the requirement for regrowth after harvest is likely the biggest concern with this year’s dry conditions.

He says the plants should be allowed to regrow until there is at least eight inches of new growth prior to a herbicide application:

"In most cases glyphosate will be the herbicide of choice for control of Canada Thistle in a post-harvest application."

Glyphosate rates required for post-harvest application are essentially double the recommended pre-harvest rates. There is also a requirement for a frost free period after the application.

Ippolito says for best control the plants should still be actively growing:

"Is there regrowth up above the stubble? Also now that we've had a couple of lighter frosts, we also have to evaluate what the frost damage to those leaves has been. We still need good, viable green leaves that aren't turning brown around the edges and getting brittle on us."

Source : Discoverestevan

Video: Agriculture Secretary Rollins Speaks at American Farm Bureau Federation Convention in Anaheim

One of the highlights at the 2026 American Farm Bureau Federation Convention in Anaheim, California, was an address by U.S. Secretary of Agriculture Brooke Rollins. During her remarks, she thanked America’s farmers and ranchers and said the Trump Administration is fully aware that food security is national security.

She also acknowledged the challenging times in Farm Country with low commodity prices and high input costs and said that’s why the President stepped in to help with the recent Bridge Assistance Program.

Montana Farm Bureau Federation Executive Vice President Scott Kulbeck says that Farm Bureau members are appreciative of the help and looks forward to working with the American Farm Bureau Federation and its presence in Washington, DC to keep farmers and ranchers in business.

Secretary Rollins said the Trump Administration is also committed to helping ranchers build back America’s cattle herd while also providing more high-quality U.S. beef at the meat case for consumers.

And she also announced more assistance for specialty crop producers who only received a fraction of the $12 billion Farmer Bridge Assistance (FBA).

It’s important to note that producers who qualify for Farmer Bridge Assistance can expect the Farm Service Agency to start issuing payments in late February. For more information, farmers and ranchers are encouraged to contact their local USDA Service Center.