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: 1238

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

Canadian Beef Check-Off Agency Scholarship Winner

The Canadian Beef Cattle Check-Off Agency is pleased to announce that Ryan Trefiak of Edgerton, AB has been awarded the 2026 $2000 scholarship. Ryan is pursuing studies in Agricultural Systems Technologies at Iowa State University. This year’s judging panel noted they were impressed by the quality and dedication of all candidates, making the selection process a difficult one. Since its launch, the scholarship program has grown into one of the Agency’s most wide-reaching communications initiatives, connecting with students across the beef industry and helping support the next generation of leaders in Canadian agriculture. Congratulations, Ryan! We wish you continued success in your studies.

Field Week: Covering distance, literally and academically

There is only so much environmental science that can be learned in a classroom or science lab. Field experience is woven throughout Lakeland College’s environmental sciences programs, with labs taking place in the natural spaces on and around campus throughout the year. Each year, however, that experience is intensified during Field Week. That’s when second-year environmental sciences students find themselves knee-deep in the river electrofishing, setting up and checking small mammal traps, deploying autonomous recording units, constructing bat houses, capturing, banding and releasing songbirds, reading soil profiles, touring mine sites and assessing wetlands. “I love the hands-on experience,” says Mackenzie Hamm, a second-year environmental sciences student majoring in wildlife and fisheries conservation. “We’ve got to learn quite a few different things. It really brings into context what we’re learning in the classroom, so I can actually apply all of that theory that we’ve been doi

Growing the future: Judy Sweet invests in Lakeland’s ag students

Judy Sweet is continuing her longstanding support of Lakeland College agricultural sciences students by investing in the Student-Managed Farm (SMF) Lab Revitalization project. Sweet’s gift will support upgrades to the calving barn on the Vermilion campus farm, enhancing agricultural teaching, applied research, animal care and industry collaboration. The improvements will also strengthen facility functionality, sustainability and long-term operational capacity. “Judy Sweet’s generosity is an investment in the future of agriculture and in the students who will lead it,” says Dr. Alice Wainwright-Stewart, president and CEO of Lakeland College. “Her continued support of Lakeland’s Student-Managed Farm helps us provide the modern facilities and hands-on learning experiences our students need to put their education into action. This gift will strengthen animal care, help advance applied research and prepare graduates to make a meaningful impact in this essential industry. We are deeply gra

Canada could add $5.4B to GDP by processing more of its crops at home: EY

Canada could generate up to $5.4 billion in additional GDP and support approximately 34,000 full-time-equivalent jobs by redirecting just 10 per cent of its raw crop exports to value-added processing here at home, according to new EY analysis released today by Protein Industries Canada. The findings come as the federal government has made domestic food processing a national priority through its National Food Security Strategy. The strategy calls for Canada to reduce its dependence on other countries by processing more of the food it grows and sets an explicit objective to increase domestic processing to strengthen self-sufficiency and drive economic growth. Canada already has an extraordinary foundation to build from. Its food and agriculture sector contributed $149.2 billion to GDP in 2024 and supported 2.3 million jobs, while Canada remains a leading producer of major crops including wheat, canola and corn. But too often, Canadian crops leave the country before the higher-value pro

Thiesse, Parman discuss farm economy, tight margins at Big Iron

Live from the Big Iron Farm and Construction Show on Wednesday, Sept. 16, Kent Thiesse, farm management analyst, and Bryon Parman, NDSU farm management specialist, joined the Red River Farm Network’s “Issues and Events Center” to discuss the farm economy and the tight margins farmers are dealing with. The conversation kicked off with both guests discussing their concerns when it comes to farm balance sheets heading into 2027. “I think there’s certainly some positivity out there in the markets,” Thiesse said. “We’ve seen a runup in both corn and soybean prices, even wheat prices. Unfortunately, we’ve also seen a runup in input costs, as well. Fertilizer costs a year ago at this time were a big concern. They’ve kind of leveled out, but they haven’t really come down much. “As we look forward and start running the pencil for next year, even with higher commodity prices, we’re maybe breakeven on soybeans and we’re in the red with corn based on the numbers I’ve looked at. We’re facing som

© 2026   Created by Darren Marsland.   Powered by

Badges  |  Report an Issue  |  Terms of Service