Fall Herbicides Insight
Western Canada
FIVE REASONS WHY APPLYING FALL HERBICIDE IS A SMART MOVE
Control: Once the crop canopy is removed, winter annuals and biennials soak up moisture and the last rays of sun before winter. In that window before freezing, some winter annuals are able to produce thousands of seeds. If you let the plants go to seed, you'll be fighting those weeds for years to come. A fall herbicide application helps control weeds before they become established.
Timing: A fall burnoff herbicide application post-harvest and before the temperature drops will remove later germinating weeds. This will help to greatly reduce weed biomass in the field.
A soil-applied extended weed control herbicide application in the late fall starts working in the spring after the snow melts and/or spring rain. This creates a barrier that stops spring weeds from emerging.
Weather Conditions: In Western Canada, fall weather conditions are often more favorable for herbicide application compared to other seasons. Cooler temperatures and higher humidity can enhance herbicide efficacy.
Crop Rotation: Applying herbicides in fall allows for more effective weed control, allowing growers to plant a wider variety of crops in the next spring without being restricted by weed problems.
Reduced Competition: Controlling weeds in the fall reduces competition for resources such as water, nutrients, and sunlight, which gives the crops a better chance to establish themselves and grow vigorously in the spring.
Resistance Management: Continuous use of the same herbicides can lead to the development of herbicide-resistant weeds. Rotating herbicides and using them at different times of the year, including in the fall, can help manage herbicide resistance.
Fall Herbicides Learning Centre
FOCUS® FALL HERBICIDE ADVANTAGE
When combined with glyphosate, FMC's Focus® herbicide controls winter annuals like wild mustard and stinkweed in the post-harvest season, as well as wild oat control the following spring.
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EXPRESS® BRAND HERBICIDE ADVANTAGE
Express® brand herbicides deliver complete burnoff with no re-growth. That's year-round weed control flexibility, with the ability for quick re-cropping.
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FALL HERBICIDE APPLICATION TIPS
Following best practices with your fall herbicide applications can ensure your herbicide program sets your spring season up for success.
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WHY FALL IS THE BEST TIME TO CONTROL WEEDS
Applying herbicides in the fall can alleviate early-season pressure. Learn more about the benefits of fall herbicide application.
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HOW HERBICIDES IN FALL CAN REDUCE INSECT PRESSURE IN SPRING
A fall weed management program can have a positive impact on reducing insect pressure by targeting the weeds that provide support for insect populations.
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Fall Herbicide Strategy: Conserve moisture, protect nutrients and control weeds
Spring conditions can often throw a wrench into your growing strategy, with excess moisture and early emerging weeds getting in the way. Of course, time is also often in short supply.
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Your Fall Herbicide Line-up
Fall Herbicides
Delivers fast, effective burndown of tough broadleaf weeds.
Enhance the activity of glyphosate on tough biennial and perennial weeds and keep your re-cropping options open for next spring with Express® SG herbicide.
Use Express® PRO herbicide to get a head start on spring with up to 15 days of powerful systemic action that's even more effective when applied in the fall.
Get comprehensive weed control for cereal crops and excellent resistance management with 3 modes of action when adding Express® FX herbicide to glyphosate.
Express® FT herbicide delivers fast burndown plus extended activity on tough flushing weeds.
Focus® herbicide has a unique mode of action combination that, when applied post-harvest, provides fall burnoff of emerged labeled weeds, PLUS extended activity on key grassy and broadleaf weeds such as kochia, lamb’s-quarters, wild mustard, stinkweed and wild oats in the spring.
Designed for spring wheat (excluding durum) growers, Focus® NXT herbicide delivers effective fall control of emerged winter annual weeds when tank-mixed with glyphosate, as well as extended activity in the spring on troublesome grassy and broadleaf weeds in the black soil zone.
Authority® 480 herbicide provides extended activity on challenging weeds like kochia, redroot pigweed, lamb’s quarters, wild buckwheat and cleavers. Its liquid formulation can be easily tank-mixed with glyphosate or applied alone and does not require soil incorporation.
Authority® Supreme herbicide delivers consistent, extended control of many grassy and broadleaf weeds in front of field peas, chickpeas and soybeans. By combining Group 14 and 15 modes of action, it also provides highly effective resistance management. Authority® Supreme herbicide can be tank-mixed with glyphosate.
Intruvix® II herbicide is fast… and it lasts. It brings the only four mode-of-action (after adding glyphosate) burndown, to fight resistance and control over 30 of the toughest broadleaf weeds.
PrecisionPac® Fall Herbicides
PrecisionPac® herbicides provide tough weed control solutions to prevent establishment of hard-to-control weeds. you need with no leftovers to store.
CF herbicides provide strong fall burndown performance with multiple modes of action built to tackle tough weeds and resistance.
CF-18-878 herbicide delivers powerful burndown with multiple modes of action for resistance management.
PF-100-0050 herbicide combines strong burndown with extended grassy and broadleaf weed control ahead of spring wheat, lentils, and field peas in the spring.
FH-20 herbicide is a new pre-harvest herbicide designed to aid in the dry down of both the crop and green weeds.
DB-878 herbicide delivers strong burndown activity on key emerged broadleaf weeds.
DB-878 PRO herbicide adds extended activity on hard-to-control broadleaf weeds.
SZ-75 herbicide delivers fast burndown with strong residual kochia control.
SZ-100 herbicide provides powerful burndown plus extended activity on key broadleaf weeds.
FMC Clean Fields Community Yields
When you choose an FMC fall herbicide your community wins too.
Thanks to growers like you, the FMC Clean Fields, Community Yields program has contributed over $710,000 to 315 community projects across Western Canada in just five years.
FMC will donate 10 cents* to community-based organizations, chosen in your area by your local retailer, for every acre of our eligible fall-labelled herbicides sold between July 15 and October 31, 2026.
Participating products:
- Authority® 480 herbicide
- Authority Strike™ herbicide
- Authority® Supreme herbicide
- Express® FT herbicide
- Express® FX herbicide
- Express® PRO herbicide
- Express® SG herbicide
- Focus® herbicide
- Focus® NXT herbicide
- Intruvix® II herbicide
And PrecisionPac blends:
- CF herbicide
- CF-18-878 herbicide
- CF-18-878 PRO herbicide
- FH-20 herbicide
- DB-878 herbicide
- DB-878 PRO herbicide
- NC-00439 herbicide
- NC-0050 herbicide
- PF-100-0050 herbicide
- SZ herbicide
LEARN MORE ABOUT FMC CLEAN FIELDS COMMUNITY YIELDS
*Terms and Conditions Apply
Get a head start on your spring season with Fall Herbicides
