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Tag Archives weed control

Cleavers can be tricky because they are both a spring and winter annual.
Crops, Features

Timing is key to whipping weeds

It’s easiest to kill weeds when they’re actively growing. Make sure you know when that is

By
Whether you’re telling a joke or treating a weed, timing is critical. And as anyone who has failed at weed control will confirm, it’s no laughing matter. Once you let weeds gain a foothold they can soon get out of hand, so it’s crucial to identify the life cycle of the weeds in your field […] Read more
leafy spurge
Features, Livestock

Training cattle to eat leafy spurge

With leafy spurge acres spreading, it’s time to bring on some new tactics

By
There’s a reason why “spurge” rhymes with “scourge.” The last economic impact analysis of the noxious weed in Manitoba, which came out in 2010, concluded that leafy spurge costs the province $40.2 million every year due to lost grazing capacity, costs of chemical controls on roadsides and indirect costs. In 2010, there were roughly 1.2 […] Read more
Palmer amaranth.
Crops, Features

Stem Shock: new herbicide in development

A new mode of action based on RNA could soon be killing a weed near you

By
It’s been over 20 years since chemical companies released a new mode of action in herbicides. But a B.C.-based company is cooking up a whole new type of herbicide. “We use a different mode of action for the actual killing of the plants than a lot of traditional herbicides. Most herbicides, by reducing the specific […] Read more
Herbicide resistance is a global problem that requires a local solution, says
Kate Sanford Mitchell. Farmers, researchers and industry from North America 
to Australia are trying to find effective ways to control resistant weeds.
Crops, Features

Resist herbicide resistance

Farmers don’t create herbicide resistance, but management practices can encourage it

By
While many farmers think about herbicide resistance in Australia, the U.K. and the U.S., the reality is that it’s a Canadian problem, too, says Kate Sanford Mitchell. We need to listen to extension specialists who are sounding the alarm about herbicide resistance, she adds. “Weed resistance is a global problem that requires a local solution,” […] Read more
Kochia in a wheat field.
Crops

Costs of disease and weed resistance

By
In Western Canada, a number of factors have helped keep disease resistance low, including variability of hosts, pathogens, environmental conditions, crop rotation and judicial use of fungicides. However, there is resistance. Weed resistance in both grass and broadleaf weeds has been identified in fields since 1988. Resistance has been identified to many herbicide groups including […] Read more
Is rotating your herbicides enough?
Crops, Features

Is rotating your herbicides enough?

Integrated weed management can slow herbicide resistance, but rotation is just one piece

By
Integrated weed management (IWM) is not rotating herbicides or modes of action. IWM is combining one of more different weed management techniques, such as chemical, cultural, physical or biological weed control. Some IWM methods are easy to implement, such as making sure you select good, certified seed that will grow vigorously and out-compete weeds. Seeding […] Read more
cornfield
Corn, Crops

What to watch for in young corn

A strong start to your corn crop will ensure you a rewarding harvest

By
The first step in guaranteeing a profitable harvest is ensuring corn plants are thriving in the early stages of growth. At the planting to seedling stage, corn is most susceptible to seed and root rot diseases. Disease such as seedling blight, and root rots caused by pythium, fusarium or rhizoctonia could affect seedlings, particularly in […] Read more
The diamondback moth is one of the more common insect pests that can reduce yield in mustard crops.
Columns, Crops

Weeds, disease and insects in mustard

In the final part of a 4-part series on mustard agronomy, Ross McKenzie turns his attention to pests

By
Weed control is generally my greatest concern when growing mustard. Weed competition can greatly reduce mustard yields by competing for available light, nutrients and moisture. Although mustard seedlings are not very competitive with weeds, there are ways that growers can reduce the early effects of weeds: burndown of weeds in fall and/or early spring before […] Read more
Slow resistance with layered herbicides
Crops, Features

Slow resistance with layered herbicides

Gowan representatives say layering isn't just about dressing for fickle weather anymore

By
Layering herbicides is a way to manage or delay herbicide resistance on the farm. The key is to apply a residual before seeding. The residual creates a herbicide layer in the soil. That layer kills weeds as they try to push emerge. With fewer weeds, there is less selection pressure on herbicides used later in […] Read more
Canada thistle
Crops, Features

Canada thistle still on ‘least wanted’ list

Early and thorough control is essential to keep Canada thistle under control

By
Canada thistle has been a thorn in farmers’ sides since before Confederation. In 1865, when the Canada Thistle Act of Upper Canada was signed into law, Her Majesty required all citizens of Upper Canada “to cut, or to cause to be cut down all the Canada thistles growing theron.” The Act continued, “If any owner, […] Read more

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