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By Marcelo Teixeira and Roberto Samora
SAO PAULO (Reuters) - The Brazilian unit of seed and agrochemicals maker Monsanto on Thursday said it will run field tests with genetically modified soy seed INTACTA2 XTEND in Brazil in the 2019-20 crop, looking to launch the variety commercially the following year.
INTACTA2 XTEND seeds have been engineered to resist some weed killers, including those containing a chemical called dicamba. The use of dicamba-based products caused controversy in the United States last year with accusations that the product drifted and damaged neighbouring crops.
"This new technology will boost weed control, particularly of some weed varieties that are resistant to glyphosate," the company said.
Earlier generations of Monsanto GM soy seeds contained glyphosate genes, which made them resistant to weed killers based on that chemical. But some weed varieties became resistant to herbicides containing glyphosate, prompting the company to look for new materials.
Brazilian regulators approved late in 2016 a request from Monsanto to sell the dicamba-resistant seeds, but the company had declined to release plans to market the product in the country until now.
The United States faced a weed-killer crisis last year caused by new formulations of dicamba-based herbicides, which farmers and weed experts say harmed crops because they evaporate and drift away from where they are applied.
The manufacturers need to convince U. S. regulators, though, after farmers flooded state agriculture departments with complaints about crop damage associated with the products.
Dicamba-based herbicides will carry tighter usage instructions this year in the United States, and the U. S. Environmental Protection Agency could block sales if complaints persist.
(Additional reporting by Tom Polansek in Chicago; Editing by Bill Trott)
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)