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MANA Details Five New Soybean Herbicides

February 28, 2013
By: Nate Birt, Top Producer Deputy Managing Editor google + 

A collection of new soybean herbicides from MANA aims to incorporate multiple modes of action into weed-control programs.

"There clearly is a place for an early foundation pre-emergence pre-mix soybean herbicide that simplifies requirements for multiple products," says James Whitehead, technical development manager for MANA Crop Protection.

"That is, it’s put out as a pre-emergence product to be followed sequentially in-season with a post-emergence material. And we want convenience there and that we put multiple modes of action together, whether it be two or three, and the multiple modes of action will come in and control the weeds that we’re targeting."

Management of PPO inhibitors, whose function is to break down cell membranes in weeds, also represents a concern for the company.

"We’re putting a lot of selection pressure on PPOs," Whitehead says. "We’ve got to be careful we don’t overuse those and burn them out. Because we do not have new modes of action coming in that can take their place."

The following are highlights of the new soybean herbicides, as spotlighted by Whitehead this week during a crop consultant meeting in Memphis. Click on the herbicide name to learn more on the MANA website.

Vise (active ingredients: metolachlor and fomesafen)

  • Good soil residual activity
  • Good activity on small-seeded broadleaf weeds, where resistance often originates
  • Two residual modes of action for resistant weed management
  • Unique compatibility with premium glyphosates
  • Excellent crop safety
  • Flexibility to common rotationoal crops

The product has some limitations, Whitehead says, including rate limitations throughout the season and some yearly use limitations.

Tailwind (active ingredients: metolachlor and metribuzin)

  • Employs often underutilized metribuzin, a photosynthetic inhibitor
  • Good soil residual product
  • Great activity on small-seeded broadleaves
  • Reduces selection pressure on ALS and PPOs

He cautions that some soybean varieties are more sensitive than others to specific products.

Rumble (active ingredient: fomesafen)

  • Good activity on small-seeded broadleaves
  • Unique compatibility with premium glyphosate and paraquat formulations
  • Generally accepted to be rainfast

Fomesafen is one of the few products that can go out post-emergence to control Palmer amaranth, Whitehead says. That means Rumble can serve as a bridging strategy to MANA’s unique products planned for the future, products that will serve a growing market.

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RELATED TOPICS: Soybeans, Research, Herbicide



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