Weeds

Integration of forage crops for managing herbicide-resistant weed seedbanks in Northeastern cropping systems

mrenz@wisc.edu — Thu, 12 Mar 2026 00:00:00 -0400

Weed control is becoming increasingly challenging for field crop producers across the Northeastern United States, including New York (N.Y.). Several factors are driving this trend, including the introduction of new and invasive weed species, the growing prevalence of herbicide resistance, increasing cost of herbicide premixes, and unpredictable weather that often limits timely field operations.

What weeds say about your soil

shilo.livingsoilmgmt@gmail.com — Wed, 02 Jul 2025 00:00:00 -0400

We often like to use the easy button on so many things. In some instances, this works for a time, but what can the long-term results be and do we attempt to understand how nature interacts and responds to the practices we do in farming? Controlling weeds is one of those easy buttons that I feel we need to take a deeper look at and understand what the weeds are trying to tell us.

Managing wild oats: Winning the war in your small grains

aadjesiwor@uidaho.edu — Fri, 16 May 2025 00:00:00 -0400

Wild oats (Avena fatua) – they’re fast, sneaky and persistent. If you’re a small-grain producer, you already know this grassy weed can rob you of yield, quality and profits. But here’s the good news: With smart strategies, you can turn the tables.

The growing challenge of herbicide resistance in Idaho's beets and beyond

Wed, 22 May 2024 00:00:00 -0400

“I’m an optimist, but I have seen fields overrun by kochia, and last year we learned that we have Palmer amaranth and waterhemp,” says Dr. Albert Adjesiwor, University of Idaho Extension weed scientist in Kimberly.

Glyphosate-resistant Palmer amaranth in Idaho – what do we do now?

ben.lawrence@simplot.com — Mon, 29 Apr 2024 00:00:01 -0400

Every farming season brings us new challenges, and 2023 brought us glyphosate-resistant (GR) Palmer amaranth, a new type of pigweed in Idaho. The ramifications of identifying GR Palmer amaranth have the potential to alter current cropping systems in Idaho.

Idaho’s Turkish thistle threat

Fri, 17 Nov 2023 00:00:00 -0500

People can argue about anything, including the best definition of a weed. However, every land manager I know can agree about their loathing for invasive thistles. Unfortunately, a new species has made its way to North America and found an ideal habitat on the stark hillsides of Hells Canyon.

Weed of the month – November’s fall edition

Tue, 31 Oct 2023 00:00:00 -0400

It's one thing to identify a weed, and another to know what to do about it. Find out what weeds to target in Madison, Ada, Twin Falls, Cassia and Bonner counties.

Most problematic weeds in Idaho’s grain production systems

dougf@uidaho.edu — Mon, 30 Oct 2023 00:00:00 -0400

Which weeds are most problematic in Idaho's grain production systems? We asked.

Weed of the month – purple loosestrife

Thu, 03 Aug 2023 00:00:00 -0400

Purple loosestrife (Lythrum salicaria) is a semiaquatic perennial plant that is native to Europe and can be purchased (illegally) as an ornamental.

Weed of the month – rush skeletonweed

Thu, 20 Jul 2023 16:50:26 -0400

Clue: This plant resembles an alfalfa plant after a migration of grasshoppers has stripped all the leaves off.

Regional efforts to address herbicide resistance

dougf@uidaho.edu — Thu, 17 Nov 2022 11:05:32 -0500

Weed resistance? Better bring your A game.

What’s the payout: Using glyphosate-resistant alfalfa in grass mixtures

emeccage@foragegenetics.com — Thu, 02 Jul 2020 20:24:28 -0400

Glyphosate-resistant alfalfa has become a popular option for many growers throughout the U.S. for growing pure alfalfa. It offers improved flexibility in weed management, as well as overall cleaner hay and silage. Because growers can control a wide range of weeds using this technology, many fields are more easily managed and less stressful to control.

Grazing sheep in alfalfa for weed control

carrie.veselka@agproud.com — Thu, 05 Oct 2017 18:35:25 -0400

For alfalfa producers, mild winters come at a price. Thanks to hot summers and mild winters, alfalfa growers in California’s Central Valley can usually depend on six cuttings of hay each year, but since they do not experience a true winter, weed infestation in their dormant alfalfa stands can be a problem.