Farm Talk

Crops

August 28, 2012

Be informed before using soybeans for livestock forage

Parsons, Kansas — Many Missouri producers are asking if it is safe to use soybeans for livestock forage.

The topic was brought up repeatedly by attendees at the Missouri State Fair in Sedalia.

Tim J. Evans, toxicology specialist at the University of Missouri College of Veterinary Medicine, answered inquiries on the subject by researching the chemical mechanism of action of a commonly used herbicide, Cobra.

“Current drought conditions have caused farmers to consider grazing, baling or ensiling soybeans for livestock consumption,” said Evans. “As is routine, much of the soybean crop has been sprayed with herbicides, especially Cobra, which contains lactofen and petroleum distillates. It is important that farmers be aware of what is known and what is unknown about this product before letting animals consume soybean plants to which this product has been applied.”

Lactofen is classified as a diphenyl ether (nitrophenyl ether) contact herbicide, which acts by destroying plant cell membranes. Lactofen is considered slightly toxic following ingestion and has been associated with liver disease and other abnormalities in rodents following chronic exposure to relatively high doses.

Naphthalene and other compounds in Cobra can also be associated with animal illness.

“With the information currently available, and apparently without specific testing for the safety of feeding Cobra-treated soybeans to animals, the manufacturer must include information on the label pertaining to the consumption by livestock of treated crops,” said Evans. “The label states that animals should not be allowed to graze on previously treated green forage or stubble. It states that treated soybean silage (ensiled soybeans), as well as treated hay and straw, should not be fed to cattle.”

Evans emphasized that the label also clearly states that hay or straw from treated plants should not be used for animal bedding.

Farmers, livestock producers and veterinarians are encouraged to be familiar with the manufacturer’s label instructions and livestock withdrawal times, as well as the material safety data (MSDS) sheets, for Cobra and all other commonly used, commercially available herbicides.

It should also be noted that some herbicides can enhance some plants’ palatability and ability to accumulate nitrate.

Producers can read about the effects of other herbicides and pesticides on crops that may eventually be used as animal feed on the MU Integrated Pest & Crop Management website at ipm.missouri.edu/IPCM /index.cfm?ID=388.£

 

1
Text Only
Crops
  • Scientists complete chromosome based draft of wheat genome

    Several Kansas State University researchers were essential in helping scientists assemble a draft of a genetic blueprint of bread wheat, also known as common wheat. The food plant is grown on more than 531 million acres around the world and produces nearly 700 million tons of food each year.
    The International Wheat Genome Sequencing Consortium, which also includes faculty at Kansas State University, recently published a chromosome-based draft sequence of wheat's genetic code, which is called a genome. "A chromosome-based draft sequence of the hexaploid bread wheat genome" is one of four papers about the wheat genome that appear in the journal Science.

    July 22, 2014

  • Drought & poor wheat harvest in Kan. has effects on nat’l economy

    The Kansas wheat harvest may be one of the worst on record — and the loss doesn't just hurt Kansas, according to a Kansas State University expert.

    July 15, 2014

  • Watch for corn leaf diseases

    In general, corn in southeast Kansas looks about as healthy as any reasonable producer might hope.

    July 1, 2014

  • Consider wind when applying herbicides

    Jill Scheidt, agronomy specialist with University of Missouri Extension in Barton County, scouted fields west of Lockwood on June 18 for the crop scouting program.

    June 24, 2014

  • WheatTour-007.jpg SW Mo. wheat tour yields nutrient tips

    Laying down nitrogen on the wheat fields is quite possibly one of the most complex and critical operations facing producers.

    June 17, 2014 3 Photos

  • Corn planting nears completion, early condition good

    With corn planting nearly complete and emergence keeping pace with the five-year average, the U.S. Department of Agriculture released its first forecast for the condition of the 2014 U.S. corn crop.

    June 10, 2014

  • Harvesting short wheat

    In many areas of Kansas, prolonged drought has resulted in short wheat and thin stands. Harvesting wheat in these situations can be a challenge.

    June 3, 2014

  • Controlling large weeds in Roundup Ready soybeans

    Controlling large weeds is often considerably more difficult than controlling smal-ler weeds. The following are some suggestions for controlling larger troublesome weeds in soybeans.

    May 28, 2014

  • aflatoxin-corn.jpg Aflatoxin risk looms large for corn growers

    To diversify their farms and tap into high demand for one of agriculture’s most profitable crops, dryland farmers more familiar with growing wheat and milo are eager to try their hand at corn.

    May 21, 2014 1 Photo

  • Kan. wheat crop smallest since 1996

    WICHITA, Kan. (AP) — Kansas is expected to produce its smallest winter wheat crop since 1996, an indication of a deepening drought across the nation's wheat belt, the government said in its first official forecast of the growing season.

    May 13, 2014

Hyperlocal Search
Premier Guide
Find a business

Walking Fingers
Maps, Menus, Store hours, Coupons, and more...
Premier Guide
Seasonal Content