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How Crop Rotation Helps Fight Herbicide Resistance

July 30, 2020
This agronomic image shows corn

Imagine you’re combining your field at harvest. Your rows look clean, but then you hit a patch or 2 of weeds. These cases of weed escapes can happen to the best of us.

But when should you be worried about the level of weed pressure you see? For that matter, could crop rotation – something you already have planned for next season – be used to help outsmart even the toughest weeds in your fields?

Weed escapes are a common problem that can interrupt your harvest, lead to an increased weed seed bank and cause resistance to develop. A field in which there are weed escapes left unchecked could be a sign of trouble.

Resistance can develop when we allow weeds to adapt to agronomic or weed control methods. For instance, if you repeatedly use a single site of action (SOA), weeds can build up a tolerance to that herbicide.

How concerned are you about the spread of herbicide resistance in your area?

Use Herbicide Programs with Multiple Effective SOAs and Rotate Crops

By using multiple effective SOAs, you never give the weeds a chance to get comfortable. This can be maximized in a crop rotation. A strong weed management program in corn this season can boost your soybean program on that same field next season, because the rotation should make it easier to choose different herbicide groups with the different crops.

Long-term, this strategy can help you delay the onset of herbicide resistance on your farm.

Recommended Herbicide Programs

In corn, we recommend Acuron® corn herbicide. Acuron contains 4 active ingredients (AIs), including the unique component bicyclopyrone, and 3 effective sites of action. Bicyclopyrone works with the other AIs in Acuron to provide powerful weed control, long-lasting control and proven crop safety. This enables Acuron to better protect corn from tough, yield-robbing weeds to outyield any other herbicide. When used in a preemergence application at full label rates, Acuron helps you find 5-15 more bushels an acre.*

Calculate how much more potential revenue you could earn with an extra 5-15 bu/A.

For dicamba-tolerant soybeans, we recommend Tavium® Plus VaporGrip® Technology herbicide, the market’s first premix residual dicamba herbicide. Through the contact control of dicamba, Tavium manages the emerged weeds you see, and through the residual control of S-metolachlor, it manages the weeds you don’t see yet. This powerful combination provides up to 3 weeks longer residual control than dicamba alone.

The Syngenta soybean herbicide portfolio also includes Boundary® 6.5 ECBroadAxe® XC and Prefix® herbicides, for effective weed control across a range of geographies and soil types.

Visit ResistanceFighter.com or talk to your local Syngenta retailer or sales representative about knocking out tough and resistant weeds in your area next year.

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All photos are either the property of Syngenta or are used with permission.

©2020 Syngenta. Adepidyn and the Syngenta logo is a trademark of a Syngenta Group Company. All other trademarks are property of their respective owners.

*Acuron yield advantage range based on 2016 Syngenta and University trials comparing Acuron to Corvus®, Resicore®, SureStart® II and Verdict® applied preemergence and at full label rates. For more information on Acuron versus an individual product, ask your Syngenta representative.

Trials reflect treatment rates and mixing partners commonly recommended in the marketplace. Product performance assumes disease presence. Performance assessments are based upon results or analysis of public information, field observations and/or internal Syngenta evaluations.