Late Planting Impact On Weed Control

Ohio crop growers faced numerous challenges planting corn and soybeans this spring, and with the crop progressing through mid-July, they now face an interesting weed control scenario, as well.

“The late planting presents challenges and makes weed control easier at the same time,” said Mark Loux, Ohio State Extension weed specialist. The unusual planting season resulted in an abnormal timeline for producers’ weed control systems.

Because farmers couldn’t get into fields as early as they would have liked to this spring, Loux said farmers saw significant weed pressure throughout June in both no-till and conventional tillage fields. In addition, some producers were not aggressive enough with their application of a burndown herbicide in no-till, and some weeds simply survived tillage this year.

Perhaps the biggest challenge to producers’ weed control strategies boiled down to simple logistics.

“When we’re planting that late, everyone gets jammed up and some missed applications,” Loux said. “So, we have some fields that are really clean and some that are really messy.”

In his travels around the state Loux said he was concerned that some producers had not yet sprayed a post-emergence herbicide. There is no point in waiting, he said, because establishing control of weeds as early as possible is critical in late planting situations.

Aside from the obvious challenges, a potentially shortened growing season does yield some positive impact on weed control.

“The good news in a late planting situation is you don’t have as many weeks of weeds, and the crop grows faster,” Loux said. “If you start weed-free and make that work, you can spray your post-emerge a little earlier and it makes control a little easier if you get the right start.”

He continues to see glyphosate-resistant marestail as the key weed problem in the state, and 2011 may prove to be an enlightening year for some farmers because of the late planting.

While traditionally found in the southwestern portions of Ohio, Loux said resistant populations of marestail are now found throughout the state.

“We have a lot of marestail this season,” he said. “We can’t control it post-emergence very well. We have some problems in beans because farmers didn’t pick the right combination of burndown herbicides, or they didn’t want to spend enough money.”

He also noted that in some cases, control efforts proved challenging because burndown application timing was much later than usual this season, and accordingly some products didn’t work as well as in a typical year.

Since control efforts were hampered in some areas, Loux is hopeful affected producers will better understand how significantly their fields are infested with resistant weed populations and plan accordingly for next year.

“Because we have up to two types of resistance in some marestail populations, the biggest thing is to realize you have a problem,” he said. “More of it is going to go to seed this year than last year. When you plan for next year, consider a fall application of herbicide, and be aggressive enough to control it next year.”

The basic control recommendation in no-till soybeans, where Loux sees the most weed control issues, is to use a comprehensive spring burndown herbicide protocol while using the correct rate of a residual control product at the same time. Beyond that, farmers can modify a post-emergence application of glyphosate as needed.

He said some plans do include a fall application for marestail or other problem weeds, as well.

“For historically resistant fields, farmers can consider some Liberty Link soybeans to break up the use of glyphosate and get those issues under control,” Loux advised. “Some farmers aren’t willing to do that, though, because the variety selection there isn’t as diverse.”

(Source: Ohio Ag Connection)

 

Leave a Reply

Herbicides Stories

HerbicidesArysta Touts Burndown Herbicide For Brome Management In Wheat
June 4, 2014
Arysta LifeScience North America recommends PRE-PARE Burndown Herbicide for effective brome management in winter wheat. Read More
HerbicidesFall Herbicide Applications More Effectively Manage Resistant Italian Ryegrass
May 14, 2014
Field studies show that a fall application of certain herbicides before weed emergence, leads to more successful crop planting and weed control in spring. Read More
Waterhemp in soybean stubble
HerbicidesThe Weed Resistance Problem: A Matter Of Billions
April 1, 2014
Not only is the amount of money being spent to control these yield robbers high, but the toll it has taken on the human population is growing lager by the day. Read More
HerbicidesHerbicides 2014: A Weed Killer For Every Weed
December 2, 2013
As weed resistance continues to proliferate, there are simply more options available than ever before in weed control — with more on the horizon. Read More

Trending Articles

Green Valley Ag facility
Retail FacilitiesGreen Valley Ag Adopts A.J. Sackett’s Precision Fertilizer Blending® Technology At New Facility
July 8, 2014
Sackett's Precision Fertilizer Blending® Technology is making huge strides around the world. Green Valley Ag adopts the technology at its new facility to support its advancing agronomic needs. Read More
Retail FacilitiesWaconia Manufacturing Builds Facility Designed For Speed, Efficiency
July 7, 2014
To make its new hub facility more efficient, Cooperative Elevator enlisted the aid of Waconia Manufacturing. Read More
EquipmentSummer Show Preview 2014: Superior Sprayers Take The Field
July 3, 2014
In this final installment of our coverage of the major categories of Big IRON that retailers can expect to test-drive at this summer’s events, here is a look at 19 sprayers. Read More
Scouting a soybean patch at Green Valley Ag.
EmployeesCropLife Compensation Survey: Battling Talent Drain
July 2, 2014
Retailers too often lose employees to companies outside of agriculture, while recruiting efforts are most often limited to competitors and other ag-focused organizations. Read More
HerbicidesDow AgroSciences Introduces SureStart II Herbicide
June 16, 2014
The enhanced formulation has improved viscosity and increased stability under heat and controls more than 60 high-anxiety grasses and broadleaf weeds found in corn fields. Read More
HerbicidesBASF Investing $270 Million To Expand U.S. Herbicide Production
June 11, 2014
BASF has invested more than $270 million to expand herbicide production capacities in the U.S., including more than 20 new products to be launched over next two years. Read More

Latest News

StewardshipMonsanto Joins Panel Of Innovators To Advance Research …
July 30, 2014
Monsanto Co. and The Climate Corp., its division, recently joined a roundtable of experts at the White House to share ideas and research approaches to help the world’s farmers manage and adapt to the impact of climate change on the global food supply. Read More
Crop InputsSoybean Checkoff Produces Big ROI
July 30, 2014
Under the soy checkoff program, all U.S. soybean farmers contribute a small percentage of their gross soybean sales for research and marketing projects that maximize their profit potential. Read More
CropLife 100Learfield Sports, CHS Agree To Football-Centric, Colleg…
July 30, 2014
CHS Inc. will embark on a highly integrated collegiate sports sponsorship platform with 24 Division I universities in 19 states designed to reach the farmer-owned cooperative's rural owners and customers. Read More
LegislationUSDA Implements Key Farm Bill Crop Insurance Provision
July 30, 2014
The new Supplemental Coverage Option, available through the federal crop insurance program and set to begin with the 2015 crop year, is designed to help protect producers from yield and market volatility. Read More
CropLife 100Wilbur-Ellis Forms New Organizational Structure For Its…
July 30, 2014
The new structure will provide more responsive internal support and will allow regional vice presidents and area managers to spend more time with customers, on talent development and on operational excellence across branches. Read More
Palmer pigweed in cotton
HerbicidesNew Training Modules On Herbicide Resistance Now Availa…
July 30, 2014
The Weed Science Society of America has announced the availability of three new education modules on herbicide resistance in weeds. Read More
HerbicidesWillowood To Market Glufosinate
July 28, 2014
Willowood USA recently announced that Federal EPA has approved its technical registration for glufosinate. Read More
InsecticidesHow To Scout For Corn Earworms In Corn
July 28, 2014
In her weekly report, University of Missouri Agronomy Specialist Jill Scheidt discusses what to look for when scouting for corn earworm. Read More
Crop InputsDuPont Pioneer, Weyerhaeuser Enter Technology License A…
July 28, 2014
The agreement brings together agricultural and forestry know-how to sustainably improve crop productivity for corn growers around the world. Read More
EquipmentAGCO Launches Global iPad App
July 28, 2014
The free AGCO Global iPad App can be downloaded from the Apple iTunes Store and features the full family of RoGator self-propelled sprayers and TerraGator high-floatation spreaders. Read More
Eric SfiligojYuma Centennial Ag Supply Earns 2014 National Environme…
July 28, 2014
Colorado-based ag retailer receives top trophy in 24th annual DuPont Crop Protection/CropLife ceremony. Read More
CropLife 100Pinnacle Forms Alliance With Wildlife Managment, Seed O…
July 25, 2014
The strategic alliance will provide Tecomate with key wildlife products, processing facilities, distribution centers and sales through Pinnacle’s ever-growing retail network. Read More
ManagementFranken Presses White House On RFS Support
July 25, 2014
Al Franken and a group of Senate democrats recently met with senior White House official John Podesta to urge the administration to change its position on an EPA proposal. Read More
ManagementASA, FarmLink To Launch ‘Operation Benchmark̵…
July 25, 2014
The American Soybean Association (ASA) and FarmLink are teaming up to help farmers close the $11 billion gap between what they harvested in 2013 and what they could harvest annually. Read More
StewardshipNorthey: Farmers Commit $1.4 Million to Try New Water Q…
July 25, 2014
The practices that are eligible for funding include cover crops, no-till or strip till and using a nitrification inhibitor when applying fall fertilizer. Read More
Precision AgFarmers Learn How Changing World Will Impact Iowa
July 24, 2014
Technology and understanding global consumer demand for Iowa farm products brought hundreds of farmers and agribusiness leaders to Ames recently for the annual Iowa Farm Bureau Federation Economic Summit. Read More
HerbicidesPurdue: Late Season Weeds May Require Manual Removal
July 24, 2014
Hand-rouging and pulling late season weeds by hand may be the best way to remove them, more so than using a herbicide, a Purdue Extension weed scientist says. Read More
Soybean Field
InsecticidesTransform WG, Closer SC Insecticides Receive R&D 10…
July 23, 2014
Dow AgroSciences has received the award from R&D Magazine for Transform WG insecticide and Closer SC insecticide with Isoclast active. Read More