Farmers Urged To Fight Palmer Amaranth Before Problem Grows

Farmers still have a fighting chance to stop Palmer Amaranth, a tough yield-robbing weed, from spreading in Iowa.

The Iowa Soybean Association (ISA) and Iowa State University Extension and Outreach are working together to provide information to keep the weed at bay. Native to the southwestern U.S., Palmer was first officially identified in Iowa last September. There’s now documented cases in Harrison, Page, Muscatine, Fremont and Davis counties. Herbicide resistance, primarily to glyphosate, is an issue.

“We’re at a point that we can really restrict how quickly it spreads,” said Mike Owen, ISU weed specialist. “If we ignore it, in the next 10 years it could be infesting half the (row crop) acres in Iowa.”

That will decimate yields and the bottom line.

Experts say Palmer outbreaks in the South have caused complete crop failures. A mild to moderate infestation can result in soybean yield losses of up to 30 percent, with a potential revenue hit of more than $200 per acre.

Early identification and action is paramount to mitigate the spread of Palmer, which resembles waterhemp, in the state.

“There’s increasing importance to know what weed species you have in order to figure out better prescriptive control methods,” said Dr. Ed Anderson, ISA senior director of Supply and Production Systems.

ISU weed specialists are available to help identify Palmer Amaranth, which is vital for appropriate planning. Late May is the time to start scouting for Palmer, but it will germinate throughout the growing season.

Recommended control strategies for Palmer include soil-applied, residual herbicides and multiple effective modes of action. Group 3, 15 and some group 14 products work well. Post-emergent products are limited due to herbicide resistance, and should be used sparingly. Cover crops and spot cultivation are also effective measures.

Waterhemp is a “relatively wimpy weed” and can be controlled with weaker herbicide doses unlike Palmer, which makes identification so important.

Contact Owen at 515-294-5936 or [email protected] for management help. For additional information or media inquiries, contact ISA’s Aaron Putze at 515-334-1099 or [email protected]. For more take-action tips to manage Palmer Amaranth, go to www.takeactiononweeds.com.

Source: Iowa Ag Connection

Topics:

Leave a Reply

Crop Inputs Stories

Soybean Plant closeup
Crop InputsDow Launching New Soybean Burndown Herbicide
June 30, 2016
With the 2016 growing season nearing the halfway mark, many growers are scouting soybean fields to find unwelcome marestail plants Read More
Valent David Nothmann
Crop InputsValent Names David Nothmann Vice President Of Marketing
June 27, 2016
Valent U.S.A. Corp. has announced the appointment of David Nothmann as vice president of marketing. Nothmann will be responsible for Read More
AdjuvantsPrecision Laboratories Introduces Intact Xtra For Use With Dicamba-Based Herbicides
June 27, 2016
Precision Laboratories announces the launch of Intact Xtra, an adjuvant designed for applicators who want to maximize spray applications and Read More
Crop InputsFields of the Future: WinField Doubles Down with Agri-Education Center Investment (w/Photo Gallery)
June 16, 2016
Land O’Lakes, Inc., joined by Agriculture Secretary Tom Vilsack, today will host Fields of the Future, a live broadcast about Read More
Trending Articles
The Andersons Waterloo
ManagementFirst Indiana Facility Certified Under 4R Nutrient Stewardship Certification Program
June 27, 2016
The 4R Nutrient Stewardship Certification Program has announced that The Andersons, Inc.’s Waterloo, IN, facility has been added to its Read More
Food IT
Industry NewsCalifornia Event Will Mix Ag And Tech Professionals To Explore IT Solutions
June 20, 2016
Silicon Valley is hot on agriculture, and an upcoming event in California will bring together the food and tech industries Read More
Monsanto Luling Plant
Eric SfiligojWhat’s Next For Monsanto?
May 31, 2016
For the folks at Monsanto’s headquarters in St. Louis, MO, it has been an eventful few weeks. Back on May Read More
Soybean Plant closeup
Industry NewsMonsanto Rejects Bayer Bid; Open To More Talks
May 25, 2016
Monsanto Co, the world’s largest seed company, turned down Bayer AG’s $62 billion acquisition bid as “incomplete and financially inadequate” Read More
Eric SfiligojPity The Monsanto Haters
May 23, 2016
An old saying goes thus: “Be careful what you wish for. You just might get it.” Given current events, there Read More
Monsanto Luling Plant
Crop InputsReport: Bayer Eyeing Monsanto For Possible Mega-Merger
May 16, 2016
Bayer AG is exploring a potential bid for U.S. competitor Monsanto Co. in a deal that would create the world’s Read More
Latest News
Heritage Cooperative
CropLife 100Heritage, Agland Co-op Explore Mutual Merger Interest
June 30, 2016
According to a report in The Ohio Country Journal, Heritage Cooperative and Agland Co-op have entered into negotiations to consider Read More
Soybean Plant closeup
Crop InputsDow Launching New Soybean Burndown Herbicide
June 30, 2016
With the 2016 growing season nearing the halfway mark, many growers are scouting soybean fields to find unwelcome marestail plants Read More
ManagementUpdates on Glyphosate Use in the EU and Bayer/Monsanto
June 29, 2016
Editors Paul Schrimpf and Eric Sfiligoj discuss the latest important developments on these crop protection fronts. Read More
Industry NewsCompass Minerals Names Protassium+ Sales Director
June 28, 2016
Compass Minerals, the producer of Protassium+ sulfate of potash, has named Scott Johnson director of sales for Protassium+ North America. Read More
Eric SfiligojThe British Leave Vote Impact On EU Agriculture
June 27, 2016
Like virtually everyone else in the world this past week, I’ve watched the global reaction to Britain’s vote to exit Read More
Valent David Nothmann
Crop InputsValent Names David Nothmann Vice President Of Marketing
June 27, 2016
Valent U.S.A. Corp. has announced the appointment of David Nothmann as vice president of marketing. Nothmann will be responsible for Read More
The Andersons Waterloo
ManagementFirst Indiana Facility Certified Under 4R Nutrient Stew…
June 27, 2016
The 4R Nutrient Stewardship Certification Program has announced that The Andersons, Inc.’s Waterloo, IN, facility has been added to its Read More
CropLife 100BRANDT Contributes To Mayo Clinic
June 27, 2016
BRANDT, a leading agriculture retailer and manufacturer of specialty agriculture products, has pledged a sizable donation to the Mayo Clinic Read More
ManagementReport: U.S. Farmland Values On Average Continue Gradua…
June 27, 2016
Land price movement has been in the forefront for farmers, landowners, lenders and land brokers for a decade now during Read More
AdjuvantsPrecision Laboratories Introduces Intact Xtra For Use W…
June 27, 2016
Precision Laboratories announces the launch of Intact Xtra, an adjuvant designed for applicators who want to maximize spray applications and Read More
Key Cooperative’s new liquid fertilizer, crop chemical, and seed facility in Grinnell, IA stores 1.5 million gallons of liquid fertilizer and 120,000 gallons of crop chemicals.
Retail FacilitiesKey Cooperative Facility Features The Latest In Murray …
June 27, 2016
When Key Cooperative wanted to improve the overall efficiency at its new state-of-the-art facility in Grinnell, IA, it turned to Read More
Allen Summers Asmark Institute PSM Training
EmployeesAsmark Institute Sponsors 25 ResponsibleAg Auditor Trai…
June 21, 2016
The Asmark Institute has announced plans to provide 25 scholarships through their affiliated State fertilizer and agrichemical associations to help encourage Read More
Kennebec Elevator
CropLife 100Wheat Growers Celebrates Kennebec Elevator Grand Openin…
June 21, 2016
Over 250 patrons and guests were on hand to celebrate Wheat Growers’ Kennebec Elevator grand opening. South Dakota Secretary of Read More
Land O Lakes
Industry NewsLand O’Lakes To Acquire Ceres
June 20, 2016
Land O’ Lakes, Inc. and Ceres, Inc. have announced that they have signed a definitive merger agreement under which Land O’Lakes Read More
Food IT
Industry NewsCalifornia Event Will Mix Ag And Tech Professionals To …
June 20, 2016
Silicon Valley is hot on agriculture, and an upcoming event in California will bring together the food and tech industries Read More
LegislationVilsack Christens WinField Crop Adventure, Talks Monsan…
June 17, 2016
The WinField Crop Adventure grand opening ceremonies at Fair Oaks Farms (near Winemac, IN) welcomed USDA Secretary of Agriculture Tom Read More
Crop InputsFields of the Future: WinField Doubles Down with Agri-E…
June 16, 2016
Land O’Lakes, Inc., joined by Agriculture Secretary Tom Vilsack, today will host Fields of the Future, a live broadcast about Read More