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Tag Archives herbicide resistance

Kochia in a wheat field.
Crops, Features

Have your kochia tested for resistance

Keeping this weed in check required a multi-pronged management approach

By
Western Canada has a kochia problem. It’s probably because kochia can tolerate things such as drought or salinity better than most crops; which allows it to proliferate in many areas of fields where the crop is less competitive. Kochia is one of the first weeds to emerge in spring and continues to grow until the […] Read more
Herbicide resistance continues to grow on the Prairies, but so will the list of management techniques to keep weeds such as wild oats at bay.
Columns, Crops

Reporter’s Notebook: How will we be farming in 20 years?

Lisa Guenther points to two agronomic problems shaping our future cropping plans

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Agriculture has undergone big changes in the last century. Yesterday’s farmers would be amazed by the technology contained in a tractor and seeder these days, or by the vaccines that protect livestock from disease. Or even by the phones we tuck into our back pockets, and occasionally drop in the muck. It’s an interesting exercise […] Read more
Tame oats exposed to Axial, a Group 1 herbicide. Susceptible plants yellow and die after being exposed to a Group 1 herbicide.
Crops, Features

Getting to know your herbicides: Group 1

A look at how Group 1 chemicals work and what you can do to manage weed resistance

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Although wild oats are an annual, Group 1-resistant wild oats have become a perennial problem on the Prairies. And wild oats aren’t the only weeds developing resistance to this chemical group. Grainews takes a look at how Group 1 chemicals work and what farmers can do to manage resistance. Group 1 herbicides are commonly applied […] Read more
Graham Collier, technical services manager at Nufarm, talks herbicide resistance during a plot tour west of Saskatoon.
Crops, Features

Which weeds will develop resistance?

Stay ahead: know which weeds are most likely to develop resistance to which chemistry

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Farmers who want to slow herbicide resistance need to understand weed biology, says Graham Collier. Collier is technical services manager at Nufarm. During a plot tour at Ag-Quest west of Saskatoon, he outlined some of the factors that contribute to herbicide resistance. One factor is the average risk of the herbicide group. Weeds are more […] Read more
Hugh Beckie was on hand during Nufarm’s field day at Ag-Quest’s Saskatoon location. Beckie is holding a GPS collar that researchers can attach to kochia plants to track how the weed disperses seeds as it tumbles across the prairie.
Crops, Features

Herbicide-resistant weeds: don’t be in denial

Herbicide resistance is a growing problem that all Prairie farmers need to address

By
Dealing with resistant weeds is a little like dealing with alcoholism, according to a Nufarm executive. The first step is to acknowledge that you’ve got a problem. Lachie McKinnon heads North American business development for Nufarm, and is also the Canadian manager. McKinnon shared thoughts on managing herbicide resistance based on his experience working in […] Read more
Managing herbicide resistance
News

Managing herbicide resistance

Gowan Canada will host a speaker series 
on Wednesday and Thursday at Ag in Motion

By
Diversity is defined in the dictionary as “the condition of having or being composed of differing elements.” In weed control, diversity means using multiple strategies, or an integrated weed management approach. For herbicides, this means using all of the modes of action available to reduce the risk of weed resistance. This may be obvious, but […] Read more
Implementing strategies to stave off herbicide resistance can bring increased costs 
to individual farmers in the short term, while the economic benefits are delayed.
Crops, Features

Managing herbicide resistance costs

Farmers considering herbicide resistance strategies are looking at the economics first

By
There are several reasons many farmers haven’t yet adopted herbicide resistance management (HRM) plans. These include a lack of information, the complexity of different management strategies and limited time. But a major reason is still economics. Many farmers worry about the costs of implementing a resistance management plan, especially if they’re uncertain about the potential […] Read more
volunteer canola
Canola, Crops, Wheat & Chaff

Tips for wild oat and volunteer canola control

Agronomy tips... from the field

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Wild oats and volunteer canola are two prevalent weeds that need to be controlled each year. When selecting your wild oat herbicide, be aware of the chemistry groups that you are using throughout your crop rotation. Group 2 herbicides have become a popular choice for wild oat control, but be careful that you’re not overusing […] Read more
Kochia not confirmed ‘triple resistant’ — yet
Crops, Features

Kochia not confirmed ‘triple resistant’ — yet

Producers should take action against kochia based on threat severity

By
Triple-resistant” kochia — kochia resistant to herbicides in Groups 2, 4 and 9 — hasn’t yet been confirmed in Alberta despite recent media reports, says Hugh Beckie, a weed scientist with Agriculture and Agri-Food Canada. Surveys have turned up two-way resistant kochia, specifically Group 2 plus Group 4, and Group 2 plus Group 9 resistant weeds, but […] Read more
Palmer amaranth. (United Soybean Board photo)
Crops, Reuters

Minnesota probes Palmer amaranth’s sudden appearance

By
Chicago | Reuters — Minnesota has launched an investigation to find the source of seed mixes contaminated with weed seeds after the aggressive, herbicide-resistant Palmer amaranth weed was found on 30 areas planted in a federal conservation program. The weed grows very fast, reaching up to eight feet in height and can hold back commercial […] Read more

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