What the Heck Is Pyroxasulfone Anyway?

From Mark Loux, Ohio State University Extension C.O.R.N. Newslettter:

Fierce was recently approved for use on soybeans, and we have had a few questions about this product, specifically about marestail control. Fierce could be used in corn last season, and there is information on it in the corn herbicide section of the “Weed Control Guide for Ohio and Indiana,” including ratings (although not on marestail). There is also information on it in the December 18, 2012 edition of C.O.R.N.

Fierce is a mixture of Valor and pyroxasulfone, a new active ingredient that can be found in various products from several companies. While pyroxasulfone is from a new class of chemistry, it has the same mode of action and similar spectrum of control as acetamide herbicides – metolachlor, acetochlor, dimethenamid.

Pyroxasulfone is primarily an annual grass herbicide, but it has substantial activity on a number of broadleaf weeds, including lambsquarters, pigweed, waterhemp, and black nightshade, and somewhat less activity on common ragweed and velvetleaf. Valor is effective on a number of these weeds but Fierce should be more effective or provide a longer period of residual control compared with Valor, for the control of common ragweed, waterhemp, and Palmer amaranth. Valor is already effective on many of these broadleaf weeds though, so the addition of pyroxasulfone really brings control of grasses more than anything else. Pyroxasulfone has very little activity on marestail, so we do not expect Fierce to be more effective than Valor on marestail.

Other pyroxasulfone corn products for which the spectrum of residual control is due to pyroxasulone alone include Zidua (BASF – pyroxasulfone) and Anthem (FMC – pyroxasulfone + Cadet). FMC also markets Anthem ATZ, the premix of pyroxasulfone + Cadet + atrazine, which has activity similar to most atrazine premixes. Anthem ATZ is labeled for use at rates that provide only early-season control, and should be followed by application of broad-spectrum POST corn herbicides.

Leave a Reply

Herbicides Stories

Corn Field
HerbicidesNew Wilbur‐Ellis Herbicide Targets Volunteer Corn
April 28, 2016
Wilbur‐Ellis Co., a recognized leader in marketing and distribution of crop protection products, as well as precision agriculture technology, has Read More
HerbicidesHELM AGRO Launches New HELM Sulfentrazone 4F Herbicide
April 26, 2016
HELM AGRO US, Inc. has announced the federal Section 3 registration of its new HELM Sulfentrazone 4F herbicide. Classified as a Read More
HerbicidesHerbicide Resistance In Waterhemp Continues To Grow
April 22, 2016
Twenty-five years ago, waterhemp was virtually unknown to Illinois farmers. Today, the broadleaf weed blankets corn and soybean fields across Read More
Soybean Field
HerbicidesHELM AGRO US Unveils New Sheridan 25 WG Herbicide
April 22, 2016
HELM AGRO US, Inc. has announced the federal Section 3 registration of its new Sheridan 25 WG herbicide for selective Read More
Trending Articles
Eric SfiligojMissing The Family Ties In Agriculture
April 25, 2016
By its nature, the agriculture market is cyclical. Up and down cycles come and go with a regular pattern. For Read More
HerbicidesHerbicide Resistance In Waterhemp Continues To Grow
April 22, 2016
Twenty-five years ago, waterhemp was virtually unknown to Illinois farmers. Today, the broadleaf weed blankets corn and soybean fields across Read More
Eric SfiligojBiotech Corn Drop More Economics Vs. Consumer Rejection
April 18, 2016
Since their introduction into the agricultural marketplace, biotech crops has steadily grown in acreage in the countries of the world Read More
Crop InputsBayer: 5 Reasons We Disagree With Maryland Neonic Ban
April 12, 2016
We’re disappointed that the Maryland legislature chose not to stand up for sound science and the rights of Maryland’s homeowners Read More
Corn
OpinionChallenging Global Economic Conditions Putting More Heat On U.S. Ag Retailers
April 7, 2016
There it is. That vague, slightly sickening feeling in the pit of my stomach. Things are getting weird out there. Read More
ScoutPro iPad
Precision AgWhat’s Trending In Soil Testing And Scouting
April 6, 2016
Keeping up on soil testing and scouting, especially following unusual weather conditions, can play a role in maximizing yields. Soil Read More
Latest News
BAICOR
CropLife 100BRANDT Acquires Utah Specialty Fertilizer Company
April 28, 2016
BRANDT, a leading agriculture retailer and manufacturer of specialty ag products, has acquired a majority interest in BAICOR, L.C. BAICOR, Read More
Soybean field
Industry NewsVerdesian Life Sciences Adds Vice President Of Business…
April 28, 2016
Verdesian Life Sciences has announced the addition of Marc Treurniet to the plant health and nutrition company’s management team. Treurniet Read More
ManagementBiotech Crops Developments and Millennials
April 28, 2016
Editors Eric Sfiligoj and Paul Schrimpf talk about the latest activities in biotech crops and a major shift in the Read More
Industry NewsNachurs-Alpine, Pathway Biologic Extend Marketing Agree…
April 28, 2016
Nachurs-Alpine Solutions (Marion, OH) and Pathway Biologic (Plant City, FL) announce an extension to their exclusive marketing agreement specific to Read More
MicronutrientsCharah Add Three Warehouses For SUL4R-PLUS Fertilizer
April 28, 2016
Charah, Inc., a total solutions company providing unparalleled service and innovation for the coal-fired power generation industry, announced today that Read More
Spenser Forgey, Yahama Fortix
FungicidesIndiana Farmer Wins Arysta LifeScience FORTIX Fungicide…
April 28, 2016
Arysta LifeScience North America recently presented Spenser Forgey, a grower from Young America, IN, with a new 2016 Yamaha Grizzly Read More
Corn Field
HerbicidesNew Wilbur‐Ellis Herbicide Targets Volunteer Corn
April 28, 2016
Wilbur‐Ellis Co., a recognized leader in marketing and distribution of crop protection products, as well as precision agriculture technology, has Read More
StewardshipNRCS To Help Farmers Measure Conservation Impacts On Wa…
April 27, 2016
The USDA has announced the availability of $2 million to help farmers install edge-of-field stations that monitor water quality as Read More
Planter in Iowa
EquipmentTop 10 Twitter Pics For #Plant16
April 27, 2016
Despite some wet weather in parts of the Midwest, growers and ag retailers are working feverishly to plant this year’s Read More
HerbicidesHELM AGRO Launches New HELM Sulfentrazone 4F Herbicide
April 26, 2016
HELM AGRO US, Inc. has announced the federal Section 3 registration of its new HELM Sulfentrazone 4F herbicide. Classified as a Read More
Valley Irrigation Valley 8000 series on corn
EquipmentValley Irrigation Receives Environmental Stewardship Ho…
April 26, 2016
Valley Irrigation has been recognized as a Groundwater Guardian Green Site by the Groundwater Foundation. The Groundwater Guardian Green Site Read More
Eric SfiligojMissing The Family Ties In Agriculture
April 25, 2016
By its nature, the agriculture market is cyclical. Up and down cycles come and go with a regular pattern. For Read More
HerbicidesHerbicide Resistance In Waterhemp Continues To Grow
April 22, 2016
Twenty-five years ago, waterhemp was virtually unknown to Illinois farmers. Today, the broadleaf weed blankets corn and soybean fields across Read More
ManagementIllinois Leads The Nation In 4R Certified Nutrient Mana…
April 22, 2016
As Illinois agriculture works to educate farmers about minimizing environmental impact and optimizing the use of ag nutrients, Illinois now leads Read More
Social media
Matt Hopkins7 Social Media Trends Shaping Ag Retail In 2016
April 22, 2016
After writing my last column on why social media is a must for ag retailers, I heard from several readers Read More
Industry NewsArysta LifeScience Adds Corey Abels To Midwest Sales Te…
April 22, 2016
Arysta LifeScience North America recently announced the addition of Corey Abels as Territory Sales Manager for the Midwest region. In Read More
Soybean Field
HerbicidesHELM AGRO US Unveils New Sheridan 25 WG Herbicide
April 22, 2016
HELM AGRO US, Inc. has announced the federal Section 3 registration of its new Sheridan 25 WG herbicide for selective Read More
ManagementCentennial’s Jim Fargo Talks Ag Retail
April 21, 2016
Special guest Jim Fargo discusses challenges facing this CropLife 100 retailer. Read More