September 06, 2012
Without proper control, early harvests could lead to an increased seed bank of glyphosate-resistant Palmer amaranth
RESEARCH TRIANGLE PARK, NC, September 6, 2012 -- The months between this year’s harvest and next spring’s planting are prime time for weeds to take over fields. In the South, that can mean another opportunity for glyphosate-resistant Palmer amaranth, or Palmer pigweed, to threaten future yields and cause unnecessary, potentially costly headaches.
“The thing that makes pigweed so problematic is it’s such a prolific seed producer,” said weed scientist Bob Scott, Ph.D., of the University of Arkansas. “A pigweed can come up and produce seed in as short as a couple of weeks.”
Without proper control, Palmer amaranth can emerge following crop harvest and produce seed in the fall months, resulting in an increase of the seed bank for the next growing season.
Farmers aiming to control pigweed before it emerges and spreads significant amounts of seed – as well as control other escaped weeds – should consider implementing a post-harvest burndown and residual program.
“No farmer wants to start the next growing season with a seed bank full of pigweed,” said Dan Westberg, Ph.D., Technical Market Manager, BASF. “With a fall burndown and residual program, farmers can reduce the seed bank of resistant weeds and have a fighting chance the following season.”
Eliminating weeds, slowing resistance
With glyphosate-resistant Palmer amaranth throughout the South, weed management experts are more adamant than ever that farmers use a complete weed management program that includes multiple herbicide sites of action.
“Regardless of what they’ve experienced this year, with a fall burndown and residual program, growers will be able to start fresh in the spring,” said Westberg. “Additionally, a fall program is an opportunity to incorporate additional sites of action to the field, making it an important tool in the ongoing challenge of managing resistant weeds.”
A fall burndown and residual program is a critical strategy in reducing seed banks.
“You have to manage weeds not just 30 days before you plant but even 30 days after you’ve harvested,” said weed scientist Larry Steckel, Ph.D., of the University of Tennessee.
Fast, effective results
One option for a fall program is a tool like Sharpen® herbicide, which is powered by Kixor® herbicide technology. It provides fast and effective results, and it has been shown to work three to five times faster than glyphosate and 2,4-D.
When tank-mixed with a residual herbicide, Sharpen herbicide can help provide extended control of weeds, which will be especially important this fall, as harvests are happening earlier than usual.
“If growers use a herbicide that offers a good burndown, they can accomplish two things at once,” said Westberg. “First, they clear out existing weeds that have the potential to spread seeds. Second, if they tank-mix with a good residual, it helps suppress any seeds in the soil that have the potential to pop up and cause problems prior to the first killing frost.”
With innovative solutions, technical support and educational tools, BASF is a farmer’s No. 1 partner for managing weed resistance by providing more corn and soybean herbicide sites of action than any other crop protection company. BASF is committed to providing farmers with new chemistries and products to help maximize their yield potential and proactively manage resistant weeds.
For more information on herbicide best practices, visit http://on.basf.com/weedbp.
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About the Crop Protection division
With sales of € 4.1 billion in 2011, BASF’s Crop Protection division is a leader in crop protection and a strong partner to the farming industry providing well-established and innovative fungicides, insecticides and herbicides. Farmers use these products and services to improve crop yields and crop quality. Other uses include public health, structural/urban pest control, turf and ornamental plants, vegetation management, and forestry. BASF aims to turn knowledge rapidly into market success. The vision of BASF’s Crop Protection division is to be the world’s leading innovator, optimizing agricultural production, improving nutrition, and thus enhancing the quality of life for a growing world population. Further information can be found on the web at www.agro.basf.com or follow us on twitter: www.twitter.com/basfagro.
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BASF Corporation, headquartered in Florham Park, New Jersey, is the North American affiliate of BASF SE, Ludwigshafen, Germany. BASF has more than 16,000 employees in North America, and had sales of $20 billion in 2011. For more information about BASF’s North American operations, visit www.basf.us.
BASF is the world’s leading chemical company: The Chemical Company. Its portfolio ranges from chemicals, plastics, performance products and crop protection products to oil and gas. We combine economic success, social responsibility and environmental protection. Through science and innovation we enable our customers in almost all industries to meet the current and future needs of society. Our products and system solutions contribute to conserving resources, ensuring healthy food and nutrition and helping to improve the quality of life. We have summed up this contribution in our corporate purpose: We create chemistry for a sustainable future. BASF posted sales of about €73.5 billion in 2011 and had more than 111,000 employees as of the end of the year. Further information on BASF is available on the Internet at www.basf.com.
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