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Field patches where kochia is dominant are candidates for mowing or, in the case of herbicide resistant plants, hand-weeding before it sets seed.
Crops

Strike early when fighting kochia in canola

Kochia has few means of control, so know the options

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Glacier FarmMedia – Kochia is one of the fastest-spreading and most resistant weeds common in canola. The key is to control it before it sets seed, experts say, and that means striking when it’s small. Herbicide resistant kochia has been a management headache for growers across the Prairies. Pre-seed burnoff is the first tool in
Growers need to understand their seed technologies and the weed spectrum they’re dealing with.
Crops

Keeping your herbicides on target

Herbicide resistance, seed technologies add complexity to spray decisions

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Glacier FarmMedia – Off-target movement of herbicides carries a risk to your crops, the neighbour’s crop and insurance premiums. With the arrival of Group 4 and Group 9 herbicide technologies, growers may think weed management is simpler. But resistant weed biotypes confound that notion and challenge growers and their advisors with tank-mix solutions and application
“You need to make every drop of the herbicides count while they’re still working.” – Kim Brown-Livingston.
Crops, News

Herbicide resistance can’t be ignored

A weed control strategy will encompass the entire production system

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Herbicide resistant weeds have been present in Manitoba since the 1980s but they are now becoming a critical issue that cannot be ignored. Kim Brown-Livingston, Manitoba Agriculture’s weed specialist, called it the biggest problem facing producers. More resistance is cropping up and no new modes of action have been available on the Prairies in the
One researcher says it’s time to move beyond using only the sprayer to control weeds.
News

The case for integrated weed management

Research scientist Charles Geddes says having the right agronomic strategy is key to combating herbicide resistance

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New research shows cultural controls can combat the growing problem of herbicide-resistant weeds. “Herbicide resistance is an increasing and growing issue across the Prairies and it is likely to have a greater impact in the future moving forward as well,” said Charles Geddes, research scientist in weed ecology and cropping systems with Agriculture and Agri-Food Canada. Geddes spoke Feb. 16 at
Think of weed control like boxing. It’s better over time to know the combinations that lead to wins, rather than hoping for a lucky knockout punch.
News

Weed control can’t count on knockout punch

The chemical control era is waning, so adoption of new combinations is very important

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Herbicides have been the No. 1 weapon against weeds since the 1940s. They’ve been effective but the last few decades have shown that genetics are a more powerful force than chemistry. Weeds are gaining genetic resistance to herbicides faster than new chemistries can be developed. “In addition to all of these new cases we’re seeing,
Students bring KAP resolution on kochia
News

Students bring KAP resolution on kochia

Perennial forages can help stamp out weeds, but lost revenue needs to be offset, ag students say

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A group of agriculture students say farmers should be incentivized to combat herbicide-resistant kochia by growing perennial forages. The weed is spreading faster than ever in Manitoba, and something must be done “before we have to return to historic practices of hand-picking weeds,” University of Manitoba student Richard Davy told Keystone Agricultural Producers members on
Kochia has been difficult to control during the prolonged drought of the past several years.
News

Kochia control waning in North Dakota

Two popular products also widely used in Manitoba seem less effective

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A North Dakota State University study showed that some kochia populations in western North Dakota likely have developed resistance to commonly used pre-plant burndown herbicides. For many years, no-till farmers have used Aim (carfentrazone) and Sharpen (saflufenacil) either just before or just after planting to control emerged kochia and other annual weeds. In Manitoba, carfentrazone is the active ingredient in Aim EC,
Editorial, Op/Ed

Editor’s Take: Many tools

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Everything changed for agriculture after the Second World War. As the world went to war, the sector was largely driven by horsepower. By war’s end, it was poised for rapid mechanization and the Green Revolution. which brought about increased use of fertilizer and herbicides, all products of wartime research efforts. The widespread use of nitrogen
“There are waterhemp populations, mostly in the States, that are resistant to nine different herbicide groups. At that point, you have no options left.” – Kim Brown Livingston.
Crops, News

The end of the chemical era draws near for farms

The future of weed control is going to require a more balanced approach

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Chemical herbicides have long been the jewel in the crown of weed management, but after seven decades of use, natural selection is turning back the calendar. Herbicide resistance in weeds was first discovered in the 1980s and the problem has steadily increased. With no new chemistries introduced in more than 30 years, it’s clear that
A new research chair aims to give Manitoba farmers new and better tools to fight weeds in their fields.
News

New research chair aimed at weeds

Farmers’ dollars help kick start new research chair position at U of M

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A new University of Manitoba research chair is taking the fight against weeds to the next level. The Manitoba Crop Protection Chair in Weed Management is dedicated to research that will support integrated weed management strategies. In late September, the university announced the appointment of Dilshan Benaragama to the new role. “This is a great

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