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A kochia seedling.
Crops

Step one: Identify your weed enemy

Step two: Identify the best means to combat it. Here are some ways to help determine the treatments for weeds, insects and diseases

By
Reading Time: 4 minutes Is that cow cockle or cocklebur? It’s easy to tell when it’s grown so much that it’s already cost you yield, but not so easy when it’s first popping out of the ground. And once you know for sure, what are your control options? Insect control is even trickier. Is that critter eating my crop, […] Read more
Pest Patrol: Have genetically engineered (GE) crops resulted in more herbicide-resistant weeds in Ontario?
Crops

Pest Patrol: Have genetically engineered (GE) crops resulted in more herbicide-resistant weeds in Ontario?

#PestPatrol with Mike Cowbrough, OMAFRA

By
Reading Time: 2 minutes There is a belief that the increased acreage planted to genetically engineered (GE) crops has led to an increase in herbicide-resistant weeds. However, results from the University of Guelph’s herbicide-resistant weed-testing laboratory indicate otherwise. Table 1 (below) summarizes the number of species confirmed as resistant to common herbicides used in Ontario during the past 40 […] Read more
Eastern black nightshade is a weed that seems to hide well, and requires diligent scouting.
Crops, Soybeans

Dry weather weed control in IP soybeans

Weed control in IP soybeans is always a challenge. This year, it was nearly impossible… but not on all farms

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Reading Time: 5 minutes Good weed control in Eastern Canada’s identity-preserved soybean fields this year appears to be just as patchy as the spring and summer rains, particularly in southern Ontario and parts of Quebec. Even Roundup Ready beans were slow to canopy in between rescue rains and required more in-season attention than usual. Then, as crops headed toward […] Read more
Photo: File
Crops, Reuters, Soybeans

EPA approves Monsanto’s dicamba weed killer

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Reading Time: < 1 minute U.S. seeds and agrochemicals maker Monsanto Co. has secured approval from the U.S. Environmental Protection Agency for a new dicamba-based weed killer designed for its next generation biotech soy and cotton varieties, the company said on Wednesday. While approval had been expected, it is seen as a major step forward for the company’s newest herbicide […] Read more
Yellowing and stunting of sow thistle 10 days after an application of Classic (left) compared to an unsprayed strip (right).
Crops

Pest Patrol: What is the best strategy for managing perennial sow thistle?

#PestPatrol with Mike Cowbrough, OMAFRA

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Reading Time: 3 minutes With lateral roots that go as deep as two metres and seed production approaching 10,000 per plant, perennial sow thistle is extremely difficult to eradicate. Its impact can be minimized, however. Management that reduces top growth will lower seed production and root mass over time.  But be forewarned. If you decide to take a year […] Read more
The three worst forage weeds
Crops, Forages

The three worst forage weeds

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The benefit of attending of Saskatchewan Agriculture’s Crop Diagnostic School at Swift Current last July was having the opportunity to get an up-close look at problems farmers face every season. One of the experts on hand was Rachel Turnquist, a regional forage specialist with Saskatchewan’s Ministry of Agriculture. Turnquist gave us a look at what[...]
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Four steps to managing herbicides
Crops

Four steps to managing herbicides

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Cutting herbicide resistance risks comes down to managing herbicides, in part. Here are four tips for doing that better, courtesy of Kate Sanford Mitchell, who manages Bayer CropScience’s herbicide and insecticide portfolios for oilseeds.
Figure 1. The spring following a fall application of glyphosate (left) compared to no application (right).
Crops

Pest Patrol: A refresher on fall weed control

#PestPatrol with Mike Cowbrough, OMAFRA

By
Reading Time: 2 minutes Many farmers know the benefits of applying herbicides to perennial weeds in the fall, especially with perennial sow-thistle and dandelion (Figure 1 at top of page). Often, producers will see a reduction in the population of these weeds the next year as well as a delay in their shoot emergence, with both effects providing a[...]
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Field horsetail with one of nine different treatments being evaluated in 2016 (left) compared to un-sprayed check (right).
Crops

Pest Patrol: What can be done about field horsetail?

#PestPatrol with Mike Cowbrough, OMAFRA

By
Reading Time: 3 minutes I get asked about field horsetail management more than any other weed, and it’s the one that I have the least amount of effective solutions for. Sure, you can get reasonably good top-growth control with the right herbicide, but the success is short-lived due to field horsetail’s tenacity. I often joke that the best way[...]
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Manitoba Agriculture group honing their weed identification skills before launching the province wide weed survey.
Crops

New weed garden to help sharpen identification skills

Funds remaining from former zero-till research farm will support a spot to see 
more than 80 of the province’s weed species

By
Reading Time: 2 minutes It’s been said a weed is but an unloved flower, but now weeds have a garden of their own in WestMan. That’s important because sometimes it can be hard to tell some weed species apart, and control methods can be vexingly target-specific. That makes it important to know just what you’re dealing with, and is[...]
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