Reading Time: 2 minutes Do we have Palmer amaranth in Ontario? How do I tell it apart from other pigweeds? Thankfully, Ontario does not have Palmer amaranth, a pigweed species that in the U.S. is resistant to five different herbicide modes of action (Table 1 below). However, we do have waterhemp, another pigweed species that is often confused with […] Read more
Pest Patrol: Do we have Palmer amaranth in Ontario?
#PestPatrol with Mike Cowbrough, OMAFRA
Weed management. It’s time to get ahead before it’s too late
With herbicide resistance on the rise, is integrated weed management an idea whose time has finally arrived?
Reading Time: 5 minutes If you want to know how bad weed resistance can get, ask the cotton farmers of Georgia about Palmer amaranth. From a single field in Macon County in 2005, glyphosate-resistant Palmer amaranth has exploded across the southern U.S. Cotton Belt. A member of the pigweed family, Palmer amaranth has seriously affected weed management in cotton […] Read more
Herbicide-resistant weeds are our biggest threat
There’s no reason why the West must become an Arkansas-style nightmare because of weed resistance, but we may be heading there anyway
Reading Time: 7 minutes Neil Harker calls herbicide-resistant weeds the biggest threat to sustainable crop production in Western Canada. “We’ve been the grim reaper talking about this for ages, but this is a watershed moment,” says the research scientist with Agriculture and Agri-Food Canada in Lacombe, Alta. “There are places in North America going back to the plow and […] Read more
A message from April Stewart, Country Guide's Associate Editor
