Home Crop Monitoring Ontario Diagnostic Days, Ep 1: Controlling waterhemp and fleabane, plus avoiding herbicide...

Ontario Diagnostic Days, Ep 1: Controlling waterhemp and fleabane, plus avoiding herbicide injury in soybean


The annual Ontario subject crop diagnostic days held at Ridgetown, Elora, and Winchester will once more go digital in 2021.

The organizing committees of those three extremely profitable in-field training and studying occasions are once more partnering with crop researchers and extension, together with help from RealAgriculture and a number of sponsors to convey you a collection of eight Ontario Diagnostic Days episodes.

We want to thank the next sponsoring organizations: The Grain Farmers of Ontario, AGRIS Co-operative, BASF, Bayer/DeKalb, Corteva/Pioneer, Nice Lakes Grain, Maizex Seeds, The Mosaic Firm, PRIDE Seeds, RealAgriculture, and Syngenta.

The digital video collection offers the OMAFRA subject crop staff, analysis colleagues from the College of Guelph, and business agronomists a chance to ship diagnostic insights in a brand new method, sharing what attendees have come to count on from Diagnostic Days at Ridgetown, Elora, and Winchester. As a part of the providing, persevering with training credit (CEU) may also be obtainable.

Take a look at this primary episode that includes College of Guelph weed scientist Dr. Peter Sikkema, and OMAFRA weed administration specialist Mike Cowbrough. Host Shaun Haney and Sikkema focus on the dramatic unfold of waterhemp throughout Ontario and management choices for growers, whereas  Cowbrough presents recommendations on how growers can handle soil-applied herbicides and keep away from injury in soybeans. (Extra concerning the collection after the participant. You’ll see a full abstract of the episode is beneath.)

The collection kicks off with this one-hour episode on Tuesday, July 19. A brand new episode will then be printed each two weeks, on Tuesdays at 9 am Japanese, via to November 2, 2021. Every episode will spotlight a common subject crop agronomic theme and might be obtainable right here on RealAgriculture for viewing, in addition to the OMAFRA Discipline Crop Information web site. All episodes may also be obtainable in our most important podcast feed.

Traditionally, these in-person diagnostic days have offered among the finest alternatives for licensed crop advisors (CCAs) to accumulate a broad vary of CEUs.

Licensed crop advisors will be capable to accumulate eight CEUs by registering for the occasion right here. Registration is required for processing CEU credit score requests and will be completed as much as December 1, 2021. Instructions for making use of for CEUs might be offered throughout every episode.

The movies are free and registration shouldn’t be required for Grain Farmers of Ontario members, media, and these not in search of CEU credit.

Registration Charges  — Solely required if making use of for CEU Credit

·      $100 (plus HST) for eight CEU credit. A receipt/affirmation e-mail might be offered.

There’s a saying concerning subject excursions: “Your mind can only absorb what your feet can endure.” We sincerely hope that by providing these one-hour subject tour stops, at house, it can save you your self some sunscreen, bug spray, and drained soles.

Phase #1: Managing glyphosate resistant waterhemp

  • Dr. Peter Sikkema, Weed Administration Professor, College of Guelph
  • Glyphosate resistant waterhemp confirmed in 2014 at Lambton County, seven seasons since, now discovered from Essex to Leeds-Grenville 700 km
  • Now proof against Teams 2, 5, 9, and 14
  • Clip #1 — How did we get right here? Waterhemp has developed in the final 20 years, rapidly. How did it get right here? Nobody is aware of for certain, however genetics got here all the best way from Missouri
  • Take a look at the weed density in these plots!
  • Administration choices? Deploy a two-pass system: put down your soil-applied, and come again in post-emerge to handle escapes, for instance
  • A 3-product system can obtain practically 100 per cent management
  • The important thing: handle “escapes” or misses (impacted by emergence, rainfall, and so on.)
  • How shut are we to not having a herbicide choice? Lengthy-term crop and weed administration applications, and cut back over-reliance on a single mode of motion

SEGMENT #2: Managing soil-applied herbicide injury in soybeans, Teams 14 and 15

  • Mike Cowbrough, OMAFRA Weed Administration Specialist
  • How massive of a problem is herbicide injury? It’s seen yearly, and at all times with different components at play (premature rain, compaction, carryover)
  • Elevated uptake of herbicide at emergence can kill the plant, however axillary buds usually take over
  • Mixing of merchandise can improve the chance, too. Some leaf distortion is feasible and that can keep
  • Penalty to high progress
  • Mitigate the chance? Contemplate soil kind (decrease OM, coarse texture could be worse). There are different choices, however restricted
  • We obtained used to zero crop injury, and we have to keep in mind that not all crop injury equates to yield loss

SEGMENT #3: Glyphosate-resistant Canada fleabane management in winter wheat

  • Again to Dr. Peter Sikkema, Weed Administration Professor, College of Guelph
  • Let’s attempt and quantify the dimensions of the issue: Stretches from finish to finish of the first agriculture producing space of southern Ontario
  • The vary in yield loss in winter wheat is way decrease vs. different crops, and that’s all about emergence timing
  • It may be a summer season or winter annual. Winter annual kind is extra aggressive with winter wheat, however spring-germinated fleabane is much less aggressive towards the already-growing wheat crop
  • Choices? Infinity. Now, InfinityFX. Pixxaro M, Lontrel.
  • Timing of management: all 4 herbicides had been utilized in the spring, or in the autumn, or each spring and fall. Solely as soon as? Go in in the spring, however early.
  • Cowl crops play a task too. After winter wheat harvest, cowl that subject for a 95 per cent discount in Canada fleabane in the next corn crop
  • Why is yield loss with winter wheat much less? The emergence sample! Fall seeded crop. It really works!
  • How far will fleabane journey and must you speak to your neighbours about their difficulty? It will get carried on wind, thoughts
  • Often the seed lands 100 m of mom plant


  • How do you identify resistant populations? Ship it for testing
  • However think about/assume escaped fleabane is glyphosate resistant
  • Perennial sow thistle issues. How do you handle for a canopy crop and fall utility? There’s a window after harvest with annuals, however perennials must be managed later
  • Fleabane matures in late August to September — little or no seed at wheat harvest. BUT it is going to re-grow
  • How a lot late-emerge fleabane and waterhemp this season is shocking to Sikkema. Later rain has led to extra weed flushes and soil-applied herbicides have run out
  • Grassy weeds above the cover — determine and make a plan (Italian or annual ryegrass in winter wheat, bluegrass, cheatgrass)


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