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  • Southern IPM blog posts

    June 2021
    M T W T F S S
  • Funded by USDA National Institute of Food and Agriculture

    The Southern Region IPM Center is located at North Carolina State University, 1730 Varsity Drive, Suite 110, Raleigh, NC 27606, and is sponsored by the United States Department of Agriculture, National Institute of Food and Agriculture.
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Georgia Farmer Barry Martin Shares His Perspective on Cover Crops

Barry Martin is a Hawkinsville, Ga., farmer who plants peanuts, cotton, corn, soybeans, wheat and grain sorghum, and uses strip till. He plants a cover crop in large part to control weeds, such as the herbicide-resistant Palmer amaranth. “A good cover of rye seems to prevent its germination,” he says. Learn more (watch the video).

Palmer amaranth management cutting into Georgia cotton farmers’ profits

By Clint Thompson, University of Georgia

Georgia cotton farmers are successfully managing the state’s most problematic weed, glyphosate-resistant Palmer amaranth, by using many methods, including hand-pulling the weed out of their fields. But tackling the weed is drastically cutting into their already limited profits, according to University of Georgia weed scientist Stanley Culpepper.

“When you ask most of our growers if they’re doing OK in regard to managing Palmer amaranth, the answer is, ‘Absolutely not.’ But it’s because of the cost of management, not the methods of management,” said Culpepper, a researcher with the UGA College of Agricultural and Environmental Sciences. Continue reading

Weather, management will determine extent of resistant weed problem next year

In Southwest Farm Press

Roundup-resistant Palmer amaranth has been bad in the Texas High Plains and Rolling Plains this year. And it could be worse in 2015.

Weather will play a role, say weed scientists Peter Dotray and Wayne Keeling, both with Texas AgriLife Extension in Lubbock. Dotray also has teaching and research responsibilities with Texas Tech.

“Rain made it seem like the light switch just turned on,” in early summer, Dotray said. “If it’s dry next year, resistant-weed infestations may not be as bad, but we know the source of plant resistance is here.”

Continue reading

Controlling weeds in wheat is difficult but not impossible

From Southwest Farm Press

Controlling weeds in wheat may never have been particularly easy, but increasing pressure from herbicide-resistant weeds makes the chore a bit more complicated.

But it’s not impossible, says David Drake, Texas AgriLife Extension agronomist who works out of the Research and Extension Center in San Angelo. Drake says six factors play important roles in effective weed control.

Continue reading

Invader Batters Rural America, Shrugging Off Herbicides

In the New York Times, August 11, 2014

By Michael Wines

The Terminator — that relentless, seemingly indestructible villain of the 1980s action movie — is back. And he is living amid the soybeans at Harper Brothers Farms.

About 100 miles northwest of Indianapolis, amid 8,000 lush acres farmed by Dave Harper, his brother Mike and their sons, the Arnold Schwarzenegger of weeds refuses to die. Three growing seasons after surfacing in a single field, it is a daily presence in a quarter of the Harper spread and has a foothold in a third more. Its oval leaves and spindly seed heads blanket roadsides and jut above orderly soybean rows like skyscrapers poking through cloud banks. It shrugs off extreme drought and heat. At up to six inches in diameter, its stalk is thick enough to damage farm equipment.

Continue reading

Arkansas researchers test new tools that destroy weed seeds

From Delta Farm Press

Most farmers are aware of the concept of “air seeding;” i.e, distributing wheat or rice or bermudagrass seed with an airplane or a spreader truck or even by hand.

What some may not think about is another method of air seeding, spreading seed, especially of glyphosate or other herbicide-resistant weeds like Palmer amaranth, out the back of their combine during harvest operations.

Continue reading

New weed scouting tool available for southern growers

From Delta Farm Press

You’re walking your fields, and you come across a weed that you know you’ve seen before. But you can’t call the name.

If that’s happened to you this spring or even in the last year or two, you need to download the new Ag Weed ID on your mobile phone. This free app, which is powered by Penton Farm Progress, can be invaluable in helping you ID and control problem weeds this spring.

Continue reading

Weed resistance problems vex Southeast wheat producers

In Southeast Farm Press

North Carolina leads the way for Upper Southeast wheat acreage with another big and promising crop in the ground this year. But increasing problems with resistance to ryegrass-controlling herbicides is a big threat to the crop.

Continue reading

Researchers Identify Herbicide Resistant Mechanism In Waterhemp

In the Missouri Ruralist

Responding to the first known report of waterhemp showing resistance to HPPD (4-hydroxyphenylpyruvate dioxygenase)-inhibiting herbicides, such as Callisto, Impact, and Laudis, weed science researchers at the University of Illinois have identified two unique mechanisms in the plant that have allowed the weed to “get around” these herbicides.

Continue reading

Herbicide-resistant weeds: How Australian wheat farmers turned the tide in their favor

While U.S. farmers have been grappling with herbicide-resistant weeds for the past few years, Australian wheat farmers have been battling them since the 1980s. According to a news story in Science magazine, Australian farmers are beginning to incorporate non-chemical weed control strategies into their farming practices—and finding that they are effectively controlling the weeds. Yet weed scientists caution farmers to practice integrated weed management and not rely on one single method.

Continue reading