No Small Issue

Speaking to a group of Mississippi-based crop consultants this past winter, Chuck Foresman pulled no punches on the looming threat glyphosate resistance poses to growers in the Mid-South. Weed experts like Foresman have tracked glyphosate resistance from the time it first appeared in Macon County, GA, to its current migration north and west across the Cotton Belt. The resistant strain now has a firm grasp in parts of Arkansas and Tennessee.

“Growers need to be prepared for glyphosate weed resistance on their property, particularly the folks living and working in the cotton growing South. I’d be prepared to manage weed resistance on my property whether I have it or whether I don’t, because its going to be a visitor on those acres sooner or later,” says Foresman, Syngenta’s Senior Technical Brand Manager, Herbicide Resistance.

Syngenta has a model that helps break down the status of glyphosate weed resistance in the U.S. The company estimates that there are currently about 8 million acres of row-crop land infested with at least one glyphosate resistant weed. What’s even more worrisome is that the company expects that number to grow to 38 million by 2013, growing at a rate of 43% a year. “Its no small issue – this glyphosate resistance weed issue,” says Foresman.

Spread the Word

The message Foresman spreads is simple: there is no magic bullet currently on the horizon for glyphosate resistance. He believes if a cure-all were found in a lab tomorrow, it would still take another decade for the product to become commercially available. Each chemistry undergoes years of testing to ensure it satisfies government regulations as well as those of its manufacturer. So how do we handle resistance in the meantime?

“The company line is integrated weed management. That would include several of these herbicides that we have available to us to take the pressure off of glyphosate,” says Foresman. The Syngenta portfolio offers several options to diversify the treatments placed on each crop.

Syngenta has gotten good feedback on its Gramoxone, which can be applied at planting with Caparol. Foresman said the two together do a good job on resistant strains of Palmer amaranth. Reflex is also an option that has proved to be very effective on Palmer amaranth.

Foresman recommends Sequence when the crop is at the one or two leaf stage. Sequence is a combination of glyphosate and Dual Magnum, “so you get a residual that is also shown to be very effective on pigweed species, on Palmer amaranth and on grasses.” In the next application, Foresman says a glyphosate plus Envoke brings in another mode of action which is very effective against morningglories.

Syngenta has seen excellent results with Suprend at layby, providing two extra modes of action in knockdown as well as residual control. Foresman says he has seen growers have success using glyphosate or MSMA with Suprend to take care of grasses.

“In the system I just described, you weren’t applying glyphosate alone in any of those situations. It basically subscribes to what we’ve been talking about. You use an integrated weed management approach where you’re using diverse herbicides and trying to take the pressure off of glyphosate,” says Foresman.

Leave a Reply

Weed Control Stories
Weed Control

Farmers Moving to Dominant Traits

November 16, 2016

In 2016, cotton growers demonstrated their preference for innovative weed-driven trait solutions.

Weed Control

Post-Direct and Hooded Options for Pigweed Control

July 7, 2016

Considering how Palmer amaranth – or pigweed – seems to just keep coming this year, directed layby applications are critical for maintaining consistent pigweed control.

Weed Control

Cut Down on Weed Escapes

June 28, 2016

As new types of resistance appear, keep a sharp eye out for pigweed escapes.

Weed Control

New Webcast Outlines Flag the Technology Program

June 22, 2016

A new webcast explaining the use and value of the University of Arkansas’ Flag the Technology program has been added to the Focus on Cotton online series from the Plant Management Network and Cotton Incorporated.

Weed Control

Preserving Weed Management Tools through Good Stewardship

May 9, 2016

Cotton growers looking for ways to cut trips across their fields to save money and time could be doing more harm than good – especially when it comes to weed management.

Weed Control

Participation Urged for Texas Palmer Amaranth Study

May 3, 2016

Texas A&M AgriLife Extension is conducting an online survey to determine weed management systems commonly used by cotton growers, as well as the current extent of glyphosate-resistant Palmer amaranth in West Texas.

Weed Control

How to Manage PPO Resistant Pigweed in Cotton

February 4, 2016

Mississippi State Extension specialists say managing Palmer amaranth with multiple resistance to glyphosate, ALS and PPO herbicides will be complicated, but not impossible.

Around The Gin
Product News

Valent Introduces Valor EZ Herbicide for 2017

December 1, 2016

Valent has introduced Valor EZ Herbicide as a residual herbicide partner for the new next generation seed systems in cotton and soybeans.

Product News

Wearable Cotton Sensors Developed

November 29, 2016

Conductive cotton fabrics have been developed into flexible wearable sensors, creating new options for cotton textiles.

Product News

Dow AgroSciences, U.S. Farmers Disagree with Proposal to Revoke Chlorpyrifos Tolerances

November 10, 2016

Dow AgroSciences is standing by the safety of proper use of chlorpyrifos, in the face of EPA’s release of a pre-publication copy of the Notice of Data Availability related to its assessment of human health risks associated with the insecticide.

Product News

Advanced Germplasm and Traits Help Growers Thrive in Cotton

November 7, 2016

PhytoGen offers options to improve fiber quality and control weeds, helping growers to out-best their best and thrive in cotton.

Product News

EPA Sets Comment Period for Enlist Duo Label Expansion

November 2, 2016

The U.S. EPA has set a public comment period until December 1 for proposed label amendments for Enlist Duo, which would allow use on Enlist cotton and extend product use on all Enlist crops to 19 other states.

Product News

Helping Cotton Growers Be Good Neighbors

November 1, 2016

Good fences make good neighbors. But these days, on-target herbicide applications also can help make growers good neighbors.

Product News

Americot Offers New XtendFlex Cotton Varieties for 2017

October 28, 2016

In 2017, Americot will offer three new Bollgard II XtendFlex varieties and one new XtendFlex only variety to cotton growers.

Product News

Bayer Delivers Right Combinations for Performance and Profit

October 27, 2016

The extensive economic data documenting earnings from FiberMax and Stoneville varieties helps make the Bayer lineup the first stop for variety decisions.

Latest News
Weed Control

Farmers Moving to Dominant Traits

November 16, 2016

In 2016, cotton growers demonstrated their preference for innovative weed-driven trait solutions.

Cotton Production

EPA Registers Dicamba Formulation for Use On Dicamba Tolerant Crops

November 9, 2016

The EPA has registered Monsanto's XtendiMax with Vapor Grip technology - a new, low volatility dicamba formulation - for use in weed control programs in cotton and soybean crops engineered for dicamba tolerance.

Weed Control

Managing Glyphosate-Resistant Italian Ryegrass

October 14, 2016

Problems with glyphosate-resistant Italian ryegrass escalated during 2016 in Mississippi. Extension Specialist Jason Bond offers several post-harvest management suggestions.

Weed Control

Post-Direct and Hooded Options for Pigweed Control

July 7, 2016

Considering how Palmer amaranth – or pigweed – seems to just keep coming this year, directed layby applications are critical for maintaining consistent pigweed control.

Weed Control

Cut Down on Weed Escapes

June 28, 2016

As new types of resistance appear, keep a sharp eye out for pigweed escapes.

Weed Control

New Webcast Outlines Flag the Technology Program

June 22, 2016

A new webcast explaining the use and value of the University of Arkansas’ Flag the Technology program has been added to the Focus on Cotton online series from the Plant Management Network and Cotton Incorporated.

Weed Control

Preserving Weed Management Tools through Good Stewardship

May 9, 2016

Cotton growers looking for ways to cut trips across their fields to save money and time could be doing more harm than good – especially when it comes to weed management.

Weed Control

Participation Urged for Texas Palmer Amaranth Study

May 3, 2016

Texas A&M AgriLife Extension is conducting an online survey to determine weed management systems commonly used by cotton growers, as well as the current extent of glyphosate-resistant Palmer amaranth in West Texas.

Weed Control

How to Manage PPO Resistant Pigweed in Cotton

February 4, 2016

Mississippi State Extension specialists say managing Palmer amaranth with multiple resistance to glyphosate, ALS and PPO herbicides will be complicated, but not impossible.

Weed Control

Producers Embrace Diverse Herbicide Programs

December 8, 2015

While growers wait on regulatory approval of new options, residual herbicides become increasingly important.

Weed Control

EPA Reconsidering Enlist Duo Registration; Dow Responds

November 27, 2015

Citing “new information regarding potential synergistic effects between the two ingredients on non-target plants,” EPA is reconsidering the registration of Dow AgroSciences’ Enlist Duo herbicide for corn, soybeans and cotton.

Weed Control

Post-Harvest Field Prep Can Reduce Weed Problems at Planting

October 27, 2015

As growers look across their harvested fields, they should be thinking about what’s needed to get ready for 2016 plantings.

Weed Control

Enlist Cotton Gets the Greenlight

September 7, 2015

When USDA deregulated Dow AgroSciences’ Enlist cotton trait system in late July, company representatives breathed a sigh of relief…and started gearing up for the “fun part.”

Weed Control

Cover Crop Considerations for This Fall

August 26, 2015

Growers should plan now for fall cover crops to help improve control of herbicide-resistant Palmer amaranth in next year's row crops.

Weed Control

Rain-Fed Weeds in Cotton Need Mid-Season Control

August 7, 2015

The early season rainfall in Texas has caused high weed pressure in cotton throughout the state, especially in the Rolling Plains.