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Texas: "Flag The Technology" Pinpoints Herbicide-Sensitive Fields

Texas: “Flag The Technology” Pinpoints Herbicide-Sensitive Fields

The Texas A&M AgriLife Extension Service and the Texas Plant Protection Association have collaborated on a Flag the Technology program that identifies crop fields sensitive to certain herbicides. With two new herbicide resistance technologies which will be widely used in cotton, corn and soybeans, program coordinators say it is critical farmers know which fields are safe for application of the…

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New Herbicide Tech Demands New Nozzle Thinking - 10 Quick Points

New Herbicide Tech Demands New Nozzle Thinking – 10 Quick Points

Expect to plant dicamba- or 2,4-D-resistant crops this year? Make sure you use the correct spray nozzles. From now on, not just any nozzle will do. In fact, the label for a new dicamba formulation for the Xtend weed control system has only one approved nozzle for use in 2017, an air induction nozzle from TeeJet, although more nozzles are expected to be added prior to the 2017 season. In fact, the…

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North Carolina: Resistant Weeds – Proper Management Crucial to Prevent New Developments Herbicide resistance in weeds is not a new phenomenon. However, as we continue to rely heavily on herbicides, we are continually exerting selection pressure for resistance. 

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North Carolina: More Herbicide Resistant Weeds On The Horizon?

North Carolina: More Herbicide Resistant Weeds On The Horizon?

As we continue to rely heavily on herbicides, we are continually exerting selection pressure for resistance.  We have been promoting resistance management for years, and nearly all cotton growers are following at least some of the basic components of a resistance management strategy.  It has been years since we saw a new herbicide mode of action come on the marketplace for any crop and especially…

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Get Ready for Weeds - 4 Videos Help Plan Against Herbicide Resistance

Get Ready for Weeds – 4 Videos Help Plan Against Herbicide Resistance

Like thieves in the night, one of U.S. soybean farmers’ biggest enemies – herbicide-resistant weeds – will start looking for ways to sneak back into U.S. soybean fields as soon as the ground starts to thaw.[content_block id=8991 slug=subscribe-oval] Resistant weeds, such as Palmer amaranth, marestail and waterhemp, pose a major threat to the industry and cost farmers significant time and money.…

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Herbicide Resistance - Preventive Approaches Start With The Tank

Herbicide Resistance – Preventive Approaches Start With The Tank

Never underestimate the power of the right tankmix, says Patrick Tranel, a University of Illinois weed scientist who was part of a team that conducted a landmark study on factors that stem herbicide resistance development. At its heart, the study looked at whether it was possible to predict if resistant populations would take shape in specific fields, based on both the farmer’s decisions and…

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Tennessee: Residual Pigweed Control with PRE Herbicides Through Heavy Cover Crops

Tennessee: Residual Pigweed Control with PRE Herbicides Through Heavy Cover Crops

All the cover crops planted last year has led to many calls on management this year.  One of the most common calls is do herbicides applied to heavy and, on occasion, sometimes still very green cover get to the soil so they can provide residual Palmer amaranth control?  We, along with other universities, have done some research on integrating PRE applied herbicides in with cover crops for Palmer…

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North Carolina Cotton: Not the Time to Let Up on Pigweed Nine years ago, York wrote that glyphosate-resistant Palmer amaranth had the potential to become the most serious problem facing cotton producers since the boll weevil (

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North Carolina Cotton: Dicamba and XtendFlex - Send in Your Comments to EPA Now

North Carolina Cotton: Dicamba and XtendFlex – Send in Your Comments to EPA Now

Planting time is near at hand and we still do not have a label for dicamba on XtendFlex cotton. The public comment period (see below) is open but there is still a ways to go before a label is granted. The EPA has indicated a label might be granted by late fall. We suspect you should add a few months to that timeline. XtendFlex cotton varieties are readily available this spring. Whether or not the…

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North Carolina Cotton: New Herbicide Options for 2016

North Carolina Cotton: New Herbicide Options for 2016

Brake F16 recently received full registration for use on cotton.  It is a mixture of fluridone and fomesafen (fomesafen is the active ingredient in Reflex).  Brake F16 was available under a Section 18 Exemption in 2015, and Brake F2 (different ratio of active ingredients) was available under Section 18 in 2014.  [content_block id=8991 slug=subscribe-oval] At the typical use rate of 1 pt per acre,…

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Herbicide Tankmixes - Why Some Work Far Better Than Others

Herbicide Tankmixes – Why Some Work Far Better Than Others

Here’s the scary part about weed resistance… From the very first application of a new herbicide, the targeted weed already is trying to gain resistance through those odd and infrequent mutations that make evolution possible. That initial mutation may not come forward on the first application or even after the first 1,000 treatments. But given time and enough applications, the weed will find a way…

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Palmer Pigweed Officially Named "Most Troublesome Weed" In U.S.

Palmer Pigweed Officially Named “Most Troublesome Weed” In U.S.

It’s now official. A survey conducted by the Weed Science Society of America (WSSA) has ranked Palmer amaranth, also known as Palmer pigweed, as the most troublesome weed in the U.S. Weeds in the Galium genus (cleavers, catchweed bedstraw and false cleavers) ranked as the most troublesome in Canada.[content_block id=8991 slug=subscribe-oval] “We certainly weren’t surprised to find Palmer amaranth…

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Iowa: Cold Temperatures and Burndown Herbicides The weather forecast appears to be favorable for field activities so people will be anxious to get into the field.

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Texas Cotton: Preplant Burndown Weed Control Options

Texas Cotton: Preplant Burndown Weed Control Options

Effective and season-long weed control in cotton starts with preplant weed management, starting clean to stay clean. The following herbicides are some viable options of burndown herbicides to start the 2016 cotton season with clean field. EPSP herbicides (Group 9) Glyphosate (e.g., Roundup PowerMax, Touchdown Total, Touchdown Hi-Tech, and WeatherMax) controls most winter annual grass and…

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Michigan Soybeans: Early Horseweed Management is Important

Michigan Soybeans: Early Horseweed Management is Important

Glyphosate- or multiple-resistant horseweed (marestail) is fairly common in many of Michigan’s no-till soybean fields (see map of Michigan below). In fact, of the 18 horseweed samples tested for resistance this winter by Michigan State University Diagnostic Services, 100 percent of them were resistant to glyphosate (Group 9) and 78 percent were resistant to both glyphosate (Group 9) and the Group…

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Michigan Wheat: Herbicide Option Considerations

Michigan Wheat: Herbicide Option Considerations

Over the next month, many of Michigan’s winter wheat acres will be treated with herbicides for weed control. While there are several herbicide options available for use in wheat, there are many factors growers should consider prior to deciding when to spray and what products to use.[content_block id=8991 slug=subscribe-oval] Cold temperatures While it looks like we are finally moving past the…

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Soybeans: Ready or Not, Weeds Are Coming

Soybeans: Ready or Not, Weeds Are Coming

In today’s world of growing herbicide resistance, farmers can use every weed-control tool they can get. Pre-emergence herbicide application is one such tool, and researchers say that it might be one of the most important.[content_block id=8991 slug=subscribe-oval] “The easiest time to control a weed is before it ever comes out of the ground,” says Jason Bond, Ph.D., Mississippi State University…

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