Agrow is part of the Business Intelligence Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC’s registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

This copy is for your personal, non-commercial use. Please do not redistribute without permission.

Printed By


First glyphosate-resistant weed confirmed in Canada

Researchers from the Canadian University of Guelph (Ontario) have confirmed findings of the first population of a glyphosate-resistant weed, the giant ragweed ( Ambrosia trifida) in Canada. Researchers began working with Monsanto Canada to confirm the emergence of a glyphosate-resistant A trifida biotype after it was first reportedly detected in 2008. The weeds have only been found in one field in Canada. As a precautionary measure, researchers are also checking the susceptibility of weed populations to glyphosate at other sites in south-western Ontario. Ten glyphosate-resistant weed biotypes, including A trifida, have been confirmed in the US, and a further seven species elsewhere in the world.


What to read next




Ask The Analyst

Please fill in the form below to send over your enquiry or check the Ask The Analyst Page to find out more about the service

Your question has been successfully sent to the email address below and we will get back as soon as possible. my@email.address.

All fields are required.

Please make sure all fields are completed.

Please make sure you have filled out all fields

Please make sure you have filled out all fields

Please enter a valid e-mail address

Please enter a valid Phone Number

Ask your question to our analysts