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Category: Weeders of the West

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Why do they [weeds] keep coming back? Well, weeds save a lot in the weed seedbank

Albert T. Adjesiwor with the University of Idaho shares why weeds are so hard to eliminate and recent research into weed seedbanks.

Russian-thistle dispersion and the effect of plant size and stubble height

Oregon State University's Fernando Oreja and Judit Barroso share their research into reducing Russian-thistle dispersion post-harvest.

Is No-Till Sustainable?

To till or not to till...that is the topic of this discussion. We invite you to share your insights and opinions!

Protecting hazelnut trunks from herbicide injury

Contributed by Oregon State University's  Ryan Hill and Marcelo Moretti, this post shares their studies of the effects of glufosinate to understand how to better…

Regulated Sugar Beet (Truvera® Triple-Stack Trait) Resistant to Glyphosate, Glufosinate, Dicamba Herbicides Being Evaluated in Several US Regions Including the Pacific Northwest

It is believed that human/weed interactions accelerated at the inception of agriculture! Prior to 1996, weed control in some crops was a major challenge. There…

Pacific Northwest Herbicide Resistance Initiative (PNWHRI) – Take the Problem Weeds Survey!

Good news everyone! Pacific Northwest land grant universities and three regional USDA-ARS units are launching a new Herbicide Resistance Initiative! Our goal is nothing short…

Wild Carrot Control in Non-crop Sites

Wild carrot, or Queen Anne’s lace, is a widespread and difficult to control nuisance weed across most of western Oregon. It is prolific in roadsides,…

Managing Herbicide Resistance: A Community-Focused Approach

When I arrived on the Palouse in June 2021 to take over for Dr. Katie Dentzman on a project looking at community-based management of herbicide…

Herbicide Mixtures for Resistance Management? Well, It Is Complicated!

If you have ever listened to any presentation or read any scientific, extension, or fact sheet on herbicide management, chances are that you would have…

Distribution of ALS‐Resistant Downy Brome Populations in Eastern Oregon

Downy brome (Bromus tectorum L.) is a difficult-to-control winter annual weed species in the dryland winter wheat fields of the Pacific Northwest.

Herbicides Are NOT The Solution

Many growers are looking to the agricultural chemical and seed industries for solutions to herbicide resistance in weeds. While I do not have a crystal…

Christmas Tree Weed Control – Developing New Herbicides

Oregon leads the United States in the production of Christmas trees, with almost 8.5 million trees sold in 2015. Weed control is essential in Christmas…

Palmer Amaranth is Lurking in Fields in the Pacific Northwest: Is it in Your Field?

On April 21, 2022, I wrote an article for this blog titled ‘Watch out for Palmer amaranth in the Pacific Northwest’ based on anecdotal evidence…

Clearing the Waters About Water

Let’s take a moment and clear the waters a bit about water.

What is The Value of Weed Biology Research to Applied Management?

I finished graduate school at WSU in the spring of 2017. Just last week, a weed science team from WSU (Ian Burke, Drew Lyon, Frank…

Waterhemp Is Here, Is Palmer amaranth Next?

When I took my current job at the University of Idaho about two years ago, one of my fears was that Palmer amaranth, one of…

Aggressor (quizalofop) Herbicide Application Timing

You may have heard about the importance of the timely application of herbicides, or maybe even experienced it yourself. With the new CoAXium wheat varieties…

The Reemergence of Preemergence Herbicides

Since the introduction of Roundup Ready crops in the mid- to late-1990s, postemergence herbicides have played an increasing role in weed control for many crops…

Developing New Herbicides to Manage Kochia in Hop Yards

Kochia (Bassia scoparia) is a severe weed problem in hop yards in eastern Washington and Idaho. This annual weed is an erect, herbaceous bush-type plant…

Watch out for Palmer amaranth in the Pacific Northwest

As I write this article, the 2022 cropping season is in full swing in the Treasure Valley of southwestern Idaho and eastern Oregon. Onions have…
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