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Tag Archives herbicides

Canada fleabane.
Crops

New crop protection products for this summer

New Technology: More options provide greater grower flexibility

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Reading Time: 3 minutes Each new year tells its own tale and offers a new mix of tough cropping decisions, with the hope of a perfect growing season and higher yields. Weed and disease management are constant challenges for growers, however, particularly with changing species, the risk of resistance and the impact of weather throughout the growing season. The […] Read more
Biologists isolate novel genes from cauliflower to improve crop nutritional value. A study committee of the National Academies of Sciences, Engineering and Medicine looking at gene-altered crops notes a genetically engineered characteristic that alters the nutritional content of a crop is “unlikely to have the same environmental or economic effects as a characteristic for herbicide resistance.” (Peggy Greb photo courtesy ARS/USDA)
Crops

U.S. study finds no risks to people, planet in GMOs

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Reading Time: 4 minutes It’s time for the task of regulating new crop varieties to focus on plants’ characteristics rather than on how the plants were developed, a team of U.S. scientists recommends in a new report. A study committee of the National Academies of Sciences, Engineering and Medicine on Tuesday released an “extensive” study of genetically engineered crops, finding […] Read more
Vetch pressure with no pre-plant treatment in soybean.
Crops, Soybeans

Pest Patrol: Any updates on vetch control in soybeans?

#PestPatrol with Mike Cowbrough, OMAFRA

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Reading Time: 2 minutes In a 2014 column, I expressed my optimism for a herbicide treatment to control vetch (Viccia cracca) before planting soybeans. I wrote, “2,4-D Ester 700 applied seven days prior to soybean planting looks like a promising tool for the control of vetch in soybeans provided vetch has emerged at the time of application. More trial […] Read more
Each waterhemp plant can produce one million seeds, with some producing up to five million.
Crops, Soybeans

Waterhemp knocking at Canada’s door

This cousin of the feared Palmer amaranth has reached the Canadian border, and could soon begin marching across the West

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Reading Time: 4 minutes A new alien is lurking in the fields of North Dakota and Minnesota, preparing to invade Canada and cause no end of trouble. The potential enemy is a noxious weed called waterhemp, a member of the pigweed family and a cousin of Palmer amaranth, a glyphosate-resistant weed currently plaguing cotton and soybean growers in the […] Read more
Crops

Pest Patrol: Do we have Palmer amaranth in Ontario?

#PestPatrol with Mike Cowbrough, OMAFRA

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Reading Time: 2 minutes Do we have Palmer amaranth in Ontario? How do I tell it apart from other pigweeds? Thankfully, Ontario does not have Palmer amaranth, a pigweed species that in the U.S. is resistant to five different herbicide modes of action (Table 1 below). However, we do have waterhemp, another pigweed species that is often confused with […] Read more
A high clearance sprayer on a field in a prairie landscape
Crops, Guide Business

Where do you cut when you have to cut costs?

As crop prices drop, growers have a new focus on cost containment. Weed control is always a big bill, so it’s only natural this gets a hard look — but taking the wrong steps could cost you money

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Reading Time: 4 minutes High crop prices always make the decision to apply crop protection products relatively easy. Just a few years ago, when canola was north of $700 per tonne and wheat was sitting near $500 per tonne, the question was never “Should I spray?” it was “Why wouldn’t I spray?” After all, at those prices if you […] Read more
In Arkansas, there’s only one tool left for managing herbicide-resistant Palmer amaranth — the hoe.
Crops

We need to get our herbicide resistance response right

Dealing with what's become a global problem could end up being one of Canada's key competitive advantages as a grain-exporting nation

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Reading Time: 7 minutes In Australia, the problem is so bad growers are catching chaff with mechanical seed destructors or burning it in windrows in order to destroy weed seeds. In the U.S. Cotton Belt, the unthinkable has happened and crews walk through fields, hand-roguing Palmer amaranth at $150 per acre. In Europe, they’re resorting to more and more […] Read more
Figure 1. The average area sprayed (per cent) at four different treatment areas over two growing seasons in Oxford County.
Crops

Pest Patrol: What advances in precision agriculture would benefit weed control?

#PestPatrol with Mike Cowbrough, OMAFRA

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Reading Time: 2 minutes Auto steer and real-time kinematics (RTK) that allow an operator to repeatedly get within millimetres of a target are, to me, the most obvious investment that you could make to improve the efficiency of mechanical weed control practices like inter-row cultivation. Operator fatigue and accidental damage to the crop would be greatly reduced by integrating […] Read more
“It absolutely amazes me how rapidly a weed like glyphosate-resistant Canada fleabane came on the scene.” — Dr. Peter Sikkema, University of Guelph, Ridgetown Campus
Crops

The case for long-term weed programs

With Enlist soybeans and Roundup Ready Xtend coming, the time to start stretching your weed control horizon is right now

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Reading Time: 5 minutes As a concept, a long-term weed management plan may be nothing new. Even so, however, the reasons to adopt it are looking stronger than ever thanks to a combination of new technologies and a weed-resistance threat that keeps intensifying. The concept certainly has merit, says Dr. Peter Sikkema, professor of weed science with the University […] Read more
Canada fleabane control with a post-emergent application of Banvel II (right) compared with an unsprayed check.
Crops

Pest Patrol: What’s the best way to get rid of glyphosate-resistant fleabane?

#PestPatrol with Mike Cowbrough, OMAFRA

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Reading Time: 2 minutes I’m seeing what I assume is glyphosate-resistant Canada fleabane all over the place. What is the best strategy to get rid of this weed in a corn, soybean and cereal rotation? CORN: Control of glyphosate-resistant Canada fleabane has been most consistent with post-emergence herbicide applications, but good control can be achieved with pre-emergence herbicides. Of […] Read more

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