Soybean School: Fighting field bindweed


Field Bindweed is a heavily-vined, troublesome weed that can cause growers headaches when it gains a foothold in soybean fields.

On this edition of the RealAgriculture Soybean School, Ontario Ministry of Agriculture, Food and Rural Affairs weed specialist Mike Cowbrough looks at control options for the perennial pest in both identity-preserved (IP) and conventional soybeans.

We catch up with Cowbrough at the Elora Research Station in what he calls the “spray and pray” zone — an area of the farm where the research team looks for effective treatments to tackle tough-to-control weeds like field bindweed.

Six weeks after application, the trial has been a real roller-coaster ride: “Some things look good at first, and then petered out. Others have consistently been very good,” says Cowbrough. Based on his observations, “in IP soybeans, there’s really only one post-emergent herbicide that gives us suppression of field bindweed top growth, and that’s a product called Blazer at the highest labeled rate.”

Shifting over to conventional soybeans, Cowbrough says growers have two Group 4 herbicides to consider when choosing either the Xtend or Enlist soybeans system. The trials show that both 2,4-D and dicamba give “very nice” control of field bindweed. Overall, he gives the nod to dicamba as the top choice “because it just has a little bit more consistent control.” (See the video below.)

Tap here for more Soybean School videos.


Wake up with RealAgriculture

Subscribe to our daily newsletters to keep you up-to-date with our latest coverage every morning.

Wake up with RealAgriculture

Other Episodes

Soybean School (view all)Season 12 (2023) Episode 1

Please register to read and comment.

Privacy Preference Center


Necessary cookies help make a website usable by enabling basic functions like page navigation and access to secure areas of the website. The website cannot function properly without these cookies.

gdpr, __cfduid, PHPSESSID, wordpress_test_cookie, woocommerce_items_in_cart, woocommerce_cart_hash, wp_woocommerce_session, wordpress_logged_in, wordpress_sec, wp-settings, wp-settings-time, __cf_mob_redir, wordpress_cache, realag


Measuring interactions with the ads on the domain.



These are used to track user interaction and detect potential problems. These help us improve our services by providing analytical data on how users use this site.



Preference cookies enable the website to remember information that changes the way the website behaves or looks, like your preferred language or the region that you are in.

chartdefaults, comment_author, comment_author_email, comment_author_url
JSESSIONID, _os_session,anonymous_votes,csrf-param,csrf-token,user,user-id,user-platform,intercom-session,intercom-lou,intercom-session
personalization_id, tfw_exp


Register for a RealAgriculture account to manage your Shortcut menu instead of the default.