These herbicides are used to selectively remove or suppress the tops of Canada thistle in crops which will grow rapidly enough to provide a closed canopy and shade the ground before new thistle shoots recover (Soybeans in drilled plantings or corn in 30 inch rows).

Control of Canada Thistle in CRP and Other Noncrop Acreage • FNR-436-W Herbicides that are efective on Canada thistle will injure or kill most broadleaf plants (including legumes) and glyphosate will injure or kill grasses. In many areas, spot treatment of Canada thistle provides suicient control of thistle while minimizing

Canada thistle is a highly competitive, persistent plant that grows in dense, impenetrable colonies. A high density of spiny-leafed Canada thistle reduces the availability of quality forage and the diversity of flora and fauna species. Location Found on …

If you grow Enlist E3 soybeans, you can’t apply dicamba — but you can apply 2,4-D choline, which is effective against thistles. If you have Liberty-tolerant soybeans, Johnson suggests a tankmix of Liberty and Classic if you are trying to control patches of thistles. Remember that Liberty is a contact herbicide, he says.

Canada thistle is most susceptible to certain herbicides between the bud and flower stages. However, most herbicides have maximum crop height or stage restrictions for application; refer to the herbicide label for these restrictions. SOYBEANS Herbicidea,b Rate Effectiveness Basagran + COC 1 qt Good Classic + NISc 0.5-0.75 oz Fair-Good

2022年12月4日 · Whether you are controlling Canada thistle with chemicals or organically, you will need to do so repeatedly. The first step towards getting rid of Canada thistle is making your yard and garden less friendly to it. While Canada thistle will grow anywhere, it grows best in soil with low fertility and open areas.

Glyphosate (marketed as Round-up and many other brands) can be applied to Canada thistle plants at or beyond the bud stage. An herbicide containing a 40% or higher concentration of glyphosate should be used, and it should be mixed to a 2% product spray solution.

2023年8月28日 · Effective Herbicides. Effective herbicides for Canada thistle control in the fall include, but are not limited to: 2,4-D (requires spring retreatment and may not provide satisfactory control alone), aminopyralid, clopyralid (control is more-effective in early fall), dicamba, glyphosate (non-selective; this herbicide can kill desirable plants in ...

We recommend using a selective post-emergent herbicide containing one of the active ingredients, such 2,4-D, to kill Canada thistle. A herbicide containing systemic activity will help target the Canada thistle down to its roots and leave desired plants unharmed.