Manage resistance by rotating modes of action


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One of the many things to think about while managing herbicide resistance on your land is the rotation of modes of action. Many growers don’t realize how much Group 14 herbicide they are using. While there are many common add-ins used with glyphosate, more than half of them are from Group 14 — which, while important, can be overused. It is critical to use all of the groups; to rotate Groups 1, 2, 9, and 14 with other modes of action, for full-spectrum resistance management.

Proportion of Group 14 herbicides (Source: 2017 Ag Data Market Research)


There has been plenty of research done which proves that providing crops with less early-season weed competition will increase yield. In fact, some companies even promote earlier application of post-emergent herbicides to do so.


Edge granular herbicide is a broad spectrum soil residual herbicide effective on a broad range of grass AND broadleaf weeds – wild oats, barnyard grass, green and yellow foxtail, kochia, cleavers, redroot pigweed, lamb’s-quarters, wild buckwheat and more. It can be used alone as a rotation with other herbicide groups, or a base layer in a herbicide layering program. With a Group 3 mode of action, Edge is an excellent resistance management tool for lentils, peas, canola, dry beans, mustard, and other specialty crops. And since it controls weeds as they germinate, Edge will help increase yields, too.


This fall, Gowan Canada has introduced an incentive for farmers to apply Edge on their acres: buy seven minibulks, get the 8th one free. This promotion is handled directly by retailers, so there is no waiting for rebate cheques. See your local retailer about Gowan’s buy 7, get the 8th one free promotion.

Visit Gowan Canada to learn more about Edge Granular Herbicide and other products.

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