Glyphosate-resistant giant ragweed has spread in southern OntarioRead more: http://www.digitaljournal.com/article/300579#ixzz16CjbMRxQ
It is believed the giant ragweed is the only weed species in Canada that is resistant to Roundup. In comparison, the United States has about 15 different weed species exhibiting resistance to glyphosate.
Roundup is Monsanto's trademark glyphosate-based herbicide. Monsanto has created a number of different crop seeds that are genetically modified to tolerate Roundup, including corn (maize), cotton, canola, and soy beans.
The company is currently working on creating a Roundup-ready strain of wheat.
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