By TOM J. BECHMAN
If this story was just about new herbicide active ingredients, it would be very short, notes Bill Johnson, Purdue University Extension weed control specialist. The pipeline on brand-new products is running very lean, he says. However, there are new names and new combinations of existing ingredients.
“The companies are positioning materials to help with weed resistance,” Johnson says. “Most of the new options will add choice in the soil-applied herbicide residual market.”
• The pipeline of truly new weed-control chemistry is almost dry.
• Most new products are geared at the soil-applied, residual control market.
• Manufacturers formulate products to help fight glyphosate-resistant weeds.
Johnson and Tom Jordan, also a Purdue University Extension weed control specialist, reviewed new names you may hear this spring. Some products still await U.S. EPA approval.
Fierce: Valent hopes to launch this product primarily for soybeans, but also for reduced-tillage corn. It’s a premix of flumioxazin, the active ingredient in Valor, and pyroxasulfone, Johnson says.
The idea is to add another mode of action, the specialists note. This product could be especially helpful in picking up waterhemp and pigweed.
LeadOff: DuPont offers this product, which will be labeled for fall and spring applications. It helps pick up winter annuals applied in the fall, Johnson says. Apply early preplant and preemergence in corn and soybeans. It contains the same active ingredients as Basis Blend, although the active ingredients in LeadOff are in a different ratio.
Op-Till PRO: BASF introduces this herbicide for soybeans with three modes of action, labeled in late December. Johnson notes that it contains the active ingredients of three existing products: Sharpen, Outlook and Pursuit. Expect it to provide a broad spectrum of control, Johnson observes.
Parallel Plus: This generic contains the same active ingredients found in Bicep. MANA will market it as a herbicide that can lay an excellent base for a two-pass weed control program. It provides pre- and postemergence control of grasses and small-seeded broadleaves in corn. Jordan expects its primary use will be as a soil-applied residual foundation product for corn.
Zemax: This Syngenta product will combine the active ingredients of Dual and Callisto. So its two modes of action will be mesotrione and S-metolachlor. The goal is for this preplant or preemergence product to provide residual control of grass and small-seeded broadleaves in corn early in the season.
Zidua: Offered by BASF, this herbicide will contain pyroxasulfone, initially identified as K1H-485, by itself. Its target will be delivering residual control of grasses and small-seeded broadleaves, including glyphosate-resistant waterhemp.
Where to get the full scoop on weed control
Once upon a time Indiana Prairie Farmer printed the entire list of trade-name herbicides available for use in Indiana and how they were to be used. The list has grown so long it’s no longer possible to do so. In fact, the table containing this list now has 235 entries!
If you want that much detail, you can still get it. The 2012 Ohio and Indiana Weed Control Guide, published as a joint project between Purdue University and Ohio State University, contains that table. In all, there are 195 pages of information.
It’s available in print for a fee. In Indiana, call 614-292-1607. In Ohio, order at county Extension offices.
This article published in the February, 2012 edition of INDIANA PRAIRIE FARMER.
All rights reserved. Copyright Farm Progress Cos. 2012.