Illinois Fertilizer & Chemical Association
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Five-Herbicide Corn Tech

USDA is considering how to regulate Bayer's developmental five-way herbicide-tolerant corn trait, which will ultimately tolerate in-season applications of 2,4-D, dicamba, glufosinate, glyphosate and quizalofop (FOPS herbicides).
USDA's Animal and Plant Health Inspection Service (APHIS) received a petition from Monsanto (now a legal entity owned by Bayer) to deregulate the new GM corn trait, called MON 87429, last spring, so the company can use it for hybrid seed production. After reviewing comments from the public, the agency announced its next step this week: the launch of an environmental impact review for the new trait.
"In reviewing the public comments and information received during and after the comment period on Bayer's petition, APHIS concluded that an environmental impact statement is necessary to assess the potential impacts to the environment from deregulating MON 87429 maize," the agency said in its news release.
The new five-way trait would replace Bayer's development of XtendFlex corn, a three-way trait that tolerates dicamba, glufosinate and glyphosate and was deregulated by USDA in 2016. The company is still waiting on EPA to approve use of current dicamba herbicides on XtendFlex corn, so it isn't yet commercialized. In the interim, Bayer has been working on this new, five-way traited corn, which it calls HT4, and is re-focusing much of its research efforts there.
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