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Tag Archives palmer amaranth

AAFC’s Breanne Tidemann says kochia (seen here) appears to be spreading to areas of Alberta where it wasn’t seen previously.
Crops, Features

Into the weeds: 2024 in preview

Prairie specialists consider which weeds are most likely to succeed as the season proceeds

By
The past few seasons have been a challenging time for farmers on the Canadian Prairies. Extreme heat, lack of precipitation and steep increases in production costs have caused some sleepless nights for many producers. As if those weren’t enough to contend with, another potential threat to crops will soon rear its ugly head: weeds. Grainews […] Read more
Planting perennial forages in ditches is recommended to help keep kochia from getting a toehold.
Crops, Features

Weed alerts on the southern front

A North Dakota weed expert cautions Prairie farmers about kochia, waterhemp and Palmer amaranth and their evolving herbicide tolerances

By
Of all the things shared by Prairie farmers on both sides of the Canada-U.S. border, an abiding love of their land, fretting over the weather and a no-nonsense, ‘get ‘er done’ attitude are among those that come to mind. Unfortunately, this also includes weed problems. Weeds know no borders, of course, so when weed trouble […] Read more
File photo of palmer amaranth — the taller yellowish plants — infesting a U.S. cotton field. (Photo courtesy ARS/USDA)
Crops

Palmer amaranth pops back up in Ontario

Weed infamous in U.S. for multiple herbicide resistances

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A single plant that showed up this summer on the edge of a southwestern Ontario cornfield is cause for concern among Canadian farmers, weed specialists warn. Writing Monday in the ag ministry’s Field Crop News, Ontario provincial weed management specialist Mike Cowbrough said the plant in question, found in Wellington County, is confirmed as palmer […] Read more
With the increasing incidence of herbicide resistance, producers must adjust their strategies to manage kochia and other resistant weeds.
Crops, Features

Your provincial weed outlook for 2023

Make sure these weeds are on your radar this year

By
For as long as agriculture has existed in Western Canada, farmers have been waging a battle to control yield-robbing weeds in their fields. It will be a similar story in 2023. The difference this time around is that battle could be shaped largely by the location where it is being fought. While Manitoba received significant […] Read more
Palmer amaranth. (United Soybean Board photo)
Crops

Arkansas confirms first-ever glufosinate-resistant broadleaf

Researchers find Palmer amaranth strains in two counties

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Researchers in the southern U.S. have found what they say is the first broadleaf weed in the world to beat the active ingredient in BASF’s Liberty herbicide. The University of Arkansas last week announced its ag researchers had found glufosinate-resistant Palmer amaranth in crops in two eastern Arkansas counties across the Mississippi River from Memphis. […] Read more
Waterhemp.
Crops, Features

Watch for expansion of waterhemp, Palmer amaranth and kochia in 2020

Serious weed threats continue to advance and grow, farmers urged to test for resistance

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For growers in Manitoba, waterhemp is a serious threat in 2020, reports Tammy Jones, a Manitoba Agriculture weed specialist. This weed was present last year in both eastern and central Manitoba, and Jones’ “biggest fear” is that more will be found in the province this year. And, as reported by Canola Council of Canada (CCC), […] Read more
A waterhemp infestation can reduce soybean yields by 40 to 95 per cent.
Columns, Hart Attacks

War on weeds, take no prisoners

Hart Attacks: It will take money and commitment to just to hold enemy line

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A recent issue of the Manitoba’s provincial farm newspaper, the Manitoba Co-operator, carried some depressing news. The province might be losing the war on herbicide resistant weeds; reports from the U.S. say despite some kind of trade deal with China, U.S. farmers figure they will need more than a $25 billion bailout in 2020 — […] Read more
To date, AAFC’s Dr. Hugh Beckie has not seen Palmer amaranth in the Prairies. However, he says, 
“if it did come up it would be through the floodwater in the Red River Valley.”
Crops, Features

Palmer amaranth continues to spread north

Producers should learn to spot the tall, fast-growing 
weed before it becomes a problem

By
Amaranth is extremely nutrient-rich. It was important to the Aztecs, and is still cultivated in South America and Mexico. It germinates easily, grows rapidly and produces huge numbers of seed. But the crop that sustained the Aztec economy famously wreaked havoc on the American cotton industry, and is now affecting corn and soybean producers in […] Read more

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