Reading Time: 3 minutes 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
Palmer amaranth pops back up in Ontario
Weed infamous in U.S. for multiple herbicide resistances
Arkansas confirms first-ever glufosinate-resistant broadleaf
Researchers find Palmer amaranth strains in two counties
Reading Time: 2 minutes 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
Recognize the threat of these invasive weeds
How big a problem can waterhemp and Palmer amaranth really be? Let’s not find out
Reading Time: 7 minutes Has everyone been crying wolf about waterhemp? After all, haven’t we been hearing warnings in southern Ontario about the weed for the past 15 years, and who has lost a bushel? Well, it was actually 17 years ago — 2002 — when the species was first confirmed in Lambton County, and the good news is […] Read more
PHOTOS: How to identify Palmer amaranth
Reading Time: < 1 minute The amaranth species look fairly similar as seedlings. Nobody wants to wait until they’re in seed to figure that out. When in doubt, ask an agronomist.” — Tammy Jones, Manitoba Agriculture. For the latest information, visit the North Dakota State University website.
Better herbicide tolerance
Better technologies are coming, but we’ll need patience and shrewd management until they arrive
Reading Time: 4 minutes Count off the many challenges facing a farmer in any growing season and outside of weather conditions, the biggest impediment has to be weed management, particularly as it relates to herbicide tolerance. In spite of the importance of varietal or hybrid selection and fertility, and the potential for yield losses from insect pests and diseases, […] Read more
North Dakota still on lookout for Palmer amaranth
Reading Time: < 1 minute 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
Minnesota finds source of Palmer amaranth on CRP land
Reading Time: 2 minutes Reuters — An invasive weed likely entered Minnesota through seed planted on land in a U.S. conservation program, state agriculture officials said on Thursday, bringing to a close an official probe of a growing threat to agricultural production. Infestations of the weed, Palmer amaranth, have affected other states in the U.S. Midwest through seed planted […] Read more
Palmer amaranth threatening U.S. corn fields
Reading Time: 3 minutes Winterset, Iowa | Reuters — A U.S. government program designed to convert farmland to wildlife habitat has triggered the spread of a fast-growing weed that threatens to strangle crops in America’s rural heartland. The weed is hard to kill and, if left unchecked, destroys as much as 91 per cent of corn on infested land, […] Read more
Minnesota probes Palmer amaranth’s sudden appearance
Reading Time: 2 minutes 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
Waterhemp knocking at Canada’s door
This cousin of the feared Palmer amaranth has reached the Canadian border, and could soon begin marching across the West
Reading Time: 4 minutes A new alien is lurking in the fields of North Dakota and Minnesota, preparing to invade Canada and cause no end of trouble. The potential enemy is a noxious weed called waterhemp, a member of the pigweed family and a cousin of Palmer amaranth, a glyphosate-resistant weed currently plaguing cotton and soybean growers in the […] Read more
A message from April Stewart, Country Guide's Associate Editor
