Reading Time: 3 minutes Below the soil surface lurks the weed seed bank — the predominant source of weed pressure on current and future crops. “You do not want to draw on this bank account,” said provincial crop specialist Harry Brook. “It is a source of annual and perennial weeds that will wait for years before the right conditions […] Read more
A large weed seed bank is a ‘gift that keeps taking’
No till, chaff collection, forage in rotation, and chemical control all reduce weed pressure
The stars (unfortunately) aligned for kochia this summer
This could be the year that triple-resistant kochia is confirmed in Alberta
Reading Time: 4 minutes Farmers never really stood a chance against kochia this year. First, it was a dry year following a dry year, and kochia thrives in dry conditions. Then those dry conditions drew salts in the soil toward the surface — and kochia loves saline soils. And finally, those saline soils delayed emergence in kochia, so any […] Read more
North Dakota still on lookout for Palmer amaranth
CNS Canada –– Officials in North Dakota continue to hunt down suspicious plants in a bid to keep the aggressive weed Palmer amaranth from establishing there. Palmer amaranth, a pigweed species, made its first confirmed appearance in North Dakota last month, in a soybean field in McIntosh County, in the south-central area of the state. […] Read more
It’s the time of year when crop scouting pays big dividends
Weed escapes, herbicide resistance, disease, and pests can all be assessed after spraying, says expert
Reading Time: < 1 minute Spray, then scout, says provincial crop specialist Mark Cutts. “It is very important to recognize that scouting after a herbicide application is vital to weed control, said Cutts. “In the majority of cases, producers will find that the chemicals have worked. However, in certain situations, field scouting may show the weeds weren’t properly controlled. Producers […] Read more
A 50/50 chance your kochia is glyphosate resistant
Triple-resistant kochia has also been found in Alberta and Saskatchewan
Reading Time: 3 minutes There’s an easy way to tell if you have glyphosate-resistant kochia in your field — flip a coin. “Half the fields that have kochia in them now have resistant populations,” said federal research scientist Charles Geddes. Five years ago, only five per cent of kochia populations in Alberta fields were resistant to glyphosate (the active […] Read more
Weed pressure ramps up in late spring
Weeds that emerge a week before the crop can cause up to 50 per cent yield loss
Reading Time: 3 minutes In a late spring like this one, you might be tempted to skip spraying for weeds to make up for lost time — but that decision could cost you. “The last few years, we’ve had early springs, so people weren’t feeling like they were under the gun,” said Harry Brook, crop specialist with Alberta Agriculture […] Read more
Six factors to consider if your soil moisture level is low
To date, all indications are pointing to a dry spring, given the below-average precipitation received in many areas of the Prairies this winter. There are exceptions to every rule of course, but a lot of farmers had relatively dry soils going into winter, so we asked some agronomists and provincial crop experts what factors could[...]
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Cannabis firm Aurora in talks to buy both CanniMed, Newstrike
Toronto | Reuters — Canadian marijuana producer Aurora Cannabis is in talks with rivals CanniMed Therapeutics and Newstrike Resources to buy both businesses in a friendly deal that would create the nation’s top weed company, people familiar with the matter told Reuters on Friday. The deal signals an easing of tensions following an offer in[...]
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Giant hogweed is one big and scary weed
Noxious weeds: Giant hogweed can reach heights of six metres
Reading Time: 2 minutes It’s not often a weed grabs the attention of both urban and rural landowners across the province, yet in 2015, giant hogweed was a weed everyone had an eye out for. As we wrap up the growing season in 2017, this prohibited noxious short-lived perennial is still on folks’ minds and is often mistaken for[...]
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Devil’s trumpet is a potentially deadly invader
Noxious Weeds: Jimsonweed
Reading Time: < 1 minute Although its exact origin is unknown, devil’s trumpet — otherwise known as jimsonweed — is found in many countries around the world in both agricultural and ornamental settings. Introduced to this province as a contaminant of agricultural seed, this smelly weed is under review by the provincial Agriculture Ministry and it has been recommended to[...]
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