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Crop Tech

November 13, 2009
 
 

Get a Jump on Weeds

There's finally a herbicide name that actually fits its use. Prequel, a new DuPont herbicide for corn, jump-starts the growing season. Containing the active ingredients rimsulfuron and isoxa-flutole, it's been tested as a burndown and a residual grass and broadleaf herbicide applied pre-emergence in front of conventional and herbicide-tolerant corn hybrids.

Jeff Carpenter, corn portfolio manager for DuPont Crop Protection, says Prequel's multiple modes of action provide for longer-lasting, more consistent early season control of weeds, such as ragweed and pigweed.

"Prequel keeps fields clean early to give corn the best start,” Carpenter says. University of Illinois weed scientist Aaron Hager notes, "Early season weed interference tends to cause loss in yield potential earlier in corn's life than in that of some other agronomic crops.”

DuPont says the best results for burndown activity Prequel will be obtained if applications are made when weeds are small. When weeds are taller than 3", an additional burndown herbicide is recommended. Prequel demonstrates additional burndown and residual activity on emerged weeds when tank-mixed with full or reduced rates of atrazine.

Prequel is formulated as a water-dispersible granule that is a new proprietary formulation from DuPont. Applied at 1.66 oz. of product per acre, it is absorbed by roots and foliage. Warm moist conditions have been shown to accelerate residual activity.

The rates (and composition) of the component materials are such that a subsequent post-emergence herbicide may be needed to achieve satisfactory weed control.

 


Corn hybrids containing the new trait platform called SmartStax get the opportunity to reduce crop insurance premiums in 2010.
Stacked Insurance

U.S. farmers who plant corn hybrids containing SmartStax, a multievent technology developed by Monsanto Company and Dow AgroSciences, in 2010 will be eligible to reduce their crop insurance premium rate as part of the Pilot Biotechnology Endorsement program through the USDA's Federal Crop Insurance Corporation.

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FEATURED IN: Farm Journal - Mid-November 2009

 
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