Ontario Agriculture

The network for agriculture in Ontario, Canada

Field bindweed is an aggressive perennial weed that reduces crop yield and slows harvesting speed especially in soybeans and cereals. Eradication is impossible, but minimizing its impact in field crops is possible with a management strategy that includes a fall application of glyphosate at 1.5 L/ac (360 g/L concentration). The photo below was taken in late May of 2004 and compares field bindweed populations in the untreated area (right) versus a late September application of glyphosate (left).The previous fall a number of different tillage and herbicide treatments were applied to field bindweed that had regrown in this field after winter wheat harvest. The next spring, field bindweed first emerged at high densities in the areas of the field that were left untreated the previous fall. Where glyphosate had been applied the previous fall at 1.5 L/ac (360 g/L) field bindweed emerged much later (about the 7-8 leaf stage of corn),at significantly lower densities compared to the untreated areas and with minimal impact to the corn crop.

Unfortunately, one fall glyphosate application isn't going to have a long term impact. After all, we are dealing with a species with a very extensive underground root system that allows it to bounce back quickly. However, a management stratgey that incorporates fall glyphosate applications, with cover crops (i.e. underseeded red clover) and in-crop treatments that remove field bindweed top growth (through effective herbicides or tillage) will go a long way to minimizing the impact of this creeping perennial. To search for effective in-crop herbicide options for field bindweed in corn, go to www.weedpro75.com A big thanks to Peter Smith and Dr. François Tardif (University of Guelph) for collaborating on this project.

Views: 1207

Comment

You need to be a member of Ontario Agriculture to add comments!

Join Ontario Agriculture

Comment by Mike Cowbrough on October 6, 2009 at 1:33am
John, my experience has been that banvel or 2,4-D certainly won't decrease the activity of glyhosate and bindweed will show visual injury symptoms quicker than glyphosate alone. However, when you take a look next spring, you would be hard pressed to notice the difference between adding those herbicides versus leaving them out of the tank.
Comment by John Beardsley on October 5, 2009 at 5:06pm
what about .15l/ac banvel and .15l/ac 2,4-d ester?
Comment by OntAG Admin on October 5, 2009 at 2:01pm
Thanks Mike: Good advice for fall scouting and control.

Here is the latest video from Peter Gredig on his weed control strategy for one of his field.

Click the link to watch the field video report.



http://www.eHarvest.com/default.aspx?vid=vid_11212008050346069

Agriculture Headlines from Farms.com Canada East News - click on title for full story

Genomics and AI Programs to strengthen Canada’s agrifood sector

Protein Industries Canada announced an additional $15 million in funding to advance genomics and AI technologies bringing new tools to plant-breeders, farmers, ingredient processors and food manufacturers. Projects that will be considered could involve the development of tools that accelerate seed genetic work; supply chain optimization; on-farm information gathering; quality assurance and food safety protocols; and ingredient and food formulation. CEO of Protein Industries Canada Robert Hunter said this will enhance genetics that provide farmers with more resilient, high-performing options. “At the same time, our investment into artificial intelligence will support the development of tools that boost on-farm productivity and sustainability,” he said. “Together, these advancements—combined with our full value-chain approach—will strengthen Canada’s position as a global supplier of nutritious, functional plant-based food, feed and ingredients, while contributing to our goal of buildi

Cereals Canada provides updates on the Prairie crop

Cereals Canada has launched its Growing Season Progress Report. Cereals Canada works with provincial departments of agriculture in Alberta, Saskatchewan, and Manitoba throughout the growing season to gather information on seeding, crop conditions and quality, and harvest progress for spring wheat. The information is compiled and presented in an interactive, user-friendly format with maps, provincial highlights, and links to crop reports. Historical data for the past five years is also available for comparison purposes. Global buyers use the interactive report to stay informed, according to Leif Carlson, Cereals Canada director of market intelligence and trade policy. “With most wheat acres located in the Prairies, the report provides global buyers with a glimpse into how the Canadian wheat crop is progressing, from seeding to harvest,” Carlson said. “Global customers want to be kept informed about how the Canadian wheat crop is progressing over the growing season. We make it easy f

Applications Are Now Being Accepted for the 2025 Regional Knowledge Mobilization Initiatives Funding Program

The Beef Cattle Research Council (BCRC) is pleased to announce that the funding program for regional knowledge mobilization initiatives has been renewed, and applications are now being accepted. The application deadline is June 13, 2025, at 11:59 PM MT.  Funding is available for, but not limited to, events. The knowledge mobilization events eligible for funding must involve beef producers and be aligned with the Canadian Beef Research and Technology Transfer Strategy. While recurring event sponsorship is not eligible, innovative knowledge mobilization activities held independently or in conjunction with existing events will be considered.  Preference will be given to: New and innovative engagement ideas such as presenting information in a new format or demonstrating a new technology Workshops and tours related to water quality, water management and winter and summer water system choices and maintenance Demonstrations and workshops on biosecurity practices for improved calf health

Cereals Canada Launches its 2025 Growing Season Progress Report

With Canada's 2025 spring wheat crop underway, Cereals Canada has resumed regular updates to its interactive Growing Season Progress Report. The report will continue to be updated until harvest is complete across all three Prairie provinces.

WWF-Canada scaling up seed orchard program to address seed shortage across Canada

This spring, WWF-Canada is scaling up an initiative to help restore ecosystems across Canada by increasing the native plant seed supply. The organization awarded grants to 13 First Nations, organizations and businesses in five provinces to support the establishment and expansion of seed orchards — native plant growing operations that produce the locally-sourced seed needed for habitat restoration projects.

© 2025   Created by Darren Marsland.   Powered by

Badges  |  Report an Issue  |  Terms of Service