WEED OF THE MONTH: Foxtail

Quick facts:

  • Giant foxtail commonly occurs in cultivated fields, pastures, waste ground, landscapes and any open area with nutrient-rich soil. Since giant foxtail was found in the United States in the 1930s, the populations have spread rapidly and become problematic to many fields across the Corn Belt.3
  • These three factors are commonly mentioned as causes of increased giant foxtail prevalence:4
    • Lack of full-season control
    • Planting crops in wide rows
    • Herbicide resistance

Resistance statistics:*

According to WeedScience.org:

*Resistance confirmation does not necessarily include all weeds and may vary among different areas of each state.

Weed management tips:

Joe Armstrong, field scientist, Dow AgroSciences, recommends:

  •  Scout early. Giant foxtail germinates in the spring and early summer. The top of a giant foxtail leaf is fuzzy, and dense hairs are visible on the top of the leaf blade when it is bent and held in light. The bottom of the leaf blade typically does not have hair on it.
  • Program approach. Eliminate early season competition and protect yield potential in corn and soybean crops by using a preemergence herbicide with residual control. This will also open a wider application window for postemergence herbicides as you plan your program for next year.

Dow AgroSciences weed control solutions:

Corn
SureStart® II herbicide
Keystone® NXT herbicide
Keystone® LA NXT herbicide
FulTime® NXT herbicide
Surpass® NXT herbicide
Durango® DMA® herbicide
Duramax® herbicide
Enlist™ Weed Control System, when commercialized*

*Regulatory approvals are pending for the Enlist herbicide solution and crops containing Enlist herbicide tolerance traits. This is not an offer for sale of Enlist.

Soybean
Sonic® herbicide
Surveil™ Co-pack herbicide
Durango® DMA® herbicide
Duramax® herbicide

Enlist™ Weed Control System, when commercialized*

*Regulatory approvals are pending for the Enlist herbicide solution and crops containing Enlist herbicide tolerance traits. This is not an offer for sale of Enlist.

Additional Information:

More information can be found through these weed science resource:s

1PLANTS Profile. U.S. Department of Agriculture Natural Resources and Conservation Service website. http://plants.usda.gov.
2MSU Weed Science: Giant Foxtail. http://www.msuweeds.com/worst-weeds/giant-foxtail/.
3University of Missouri Extension. Identifying Grass Seedlings. http://extension.missouri.edu/p/IPM1024-7.
4Penn State College of Agricultural Sciences. Giant Foxtail. http://extension.psu.edu/pests/weeds/weed-id/giant-foxtail.

®™DOW Diamond, Colex-D, DMA, Duramax, Durango, Enlist, Enlist Duo, Enlist E3, FulTime, Instinct, Keystone, N-Serve, Sonic, SureStart, Surpass and Surveil are trademarks of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. ®Roundup Ready is a registered trademark of Monsanto Technology LLC. Always follow IRM, grain marketing and all other stewardship practices and pesticide label directions. Roundup Ready® crops contain genes that confer tolerance to glyphosate herbicides. Glyphosate herbicides will kill crops that are not tolerant to glyphosate. B.t. products may not yet be registered in all states. Check with your seed representative for the registration status in your state. FulTime NXT, Keystone LA NXT and Keystone NXT are federally Restricted Use Pesticides. Duramax, Durango DMA, FulTime NXT, Instinct II, Keystone LA NXT, Keystone NXT, Sonic, SureStart II, Surpass NXT and Surveil Co-pack are not registered for sale or use in all states. FulTime NXT, Keystone LA NXT, Keystone NXT, SureStart II and Surpass NXT are not available for sale, distribution or use in Nassau and Suffolk counties in the state of New York. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Do not fall-apply anhydrous ammonia south of Highway 16 in the state of Illinois. Enlist E3 soybeans are being jointly developed by MS Technologies and Dow AgroSciences. Regulatory approvals are pending for the Enlist herbicide solution and crops containing Enlist herbicide tolerance traits. The information presented here is not an offer for sale. Always read and follow label directions. ©2014 Dow AgroSciences LLC