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Avoid This Tank Mix

Mixing the herbicides Frontline XL and Puma Super are a bad idea, even if the label says it is OK, a MAFRI official says. “Neither Bayer nor Dow supports the tank mix because of antagonism, especially when conditions are less than perfect,” says John MacGregor, farm production advisor for Steinbach.

MacGregor said some Frontline packaging contains labelling that indicates tank mixing with Puma Super but the box is stamped “do not mix.” The tank mix is also incorrectly listed in the Guide to Field Crop Protection’s tank mix chart.

Approach Canola Weed Control Differently

This spring has been anything but typical in many parts of the prairies, and that is leading some producers to question whether they should change their weed control strategy.

“In a typical spring, early weed control in canola gives the best returns as it keeps the crop weed free during the cotyledon to four-leaf stage when it is most vulnerable to weed competition,” says Canola Council of Canada agronomist Derwyn Hammond. “However, this spring stressed plants and thin or uneven emergence issues are common in many fields.”

Drought or frost stress. Should I wait to spray?

My stand is thin and delayed. Can I wait and get the weeds with a single pass or will I have to spray multiple times?

The answers to these questions will be field specific, says Hammond, but the bottom line is still that weeds emerging ahead of or at the same time as the canola crop will cause the most yield loss. This is best summarized in the fact sheet at the following link: https://canola-council. merchantsecure.com/canola_resources/product36.aspThe

Canola Council stresses growers should evaluate each field on a case-by-case basis. This is one year in which it might make sense to split apply herbicides.

Check the following links for information on sprayer calibration and managing spray drift:

Calibration tips –http://www.omafra.gov.on.ca/english/engineer/facts/88-129.htm

Managing drift –http://www.ag.ndsu.edu/pubs/plantsci/weeds/a657w.htm

For more information in your area, contact:

Derwyn Hammond, Manitoba Region, 204-729-9011

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