Varro

Features and Benefits

• Strong performance on grass weeds like wild oats, barnyard grass, Persian darnel, green and yellow foxtail, canary seed and Japanese brome
• Group 2 technology allows for control of problematic Group 1-resistant wild oats and foxtail
• Allows crop rotation flexibility to sensitive crops like dry beans and lentils
• Enhances the overall control of its broadleaf tank-mix partners
• Exceptional crop safety
• Registered for ground and aerial application

Varro for Wild Oat Control

Source: 5 Bayer Internal Trials.
Your results may vary according to agronomic, environmental and pest pressure variables.

Varro for Green Foxtail Control

Source: 3 Bayer Internal Trials.
Your results may vary according to agronomic, environmental and pest pressure variables.

Varro for Yellow Foxtail Control

Source: 2 Bayer Internal Trials.
Your results may vary according to agronomic, environmental and pest pressure variables.

Weed Control

¹ Velocity m3/Varro + AMS for use on spring and winter wheat only. In durum wheat, add a non-ionic surfactant.

Get the Max from your Tank Mix

Our tank mix tool can help you find the best tank mix partner for the Bayer herbicide you’re using.
Tank Mix Tool

Resistance is a naturally occuring, inherited ability of some weed biotypes to survive a herbicide treatment that should, under normal use conditions, effectively control a weed population. Some herbicide resistant weeds have naturally developed one or more mechanisms that allow them to survive a herbicide treatment.

For a weed to be considered resistant it must:

• Normally be controlled by the herbicide
• Survive a usually lethal dose of the herbicide
• Be heritable, meaning it is passed from generation to generation

Herbicide-resistant individuals are naturally present within a weed population at very low frequencies.

Did you know that there are over 20 Group 1 herbicides on the market?

How does resistance develop?

The image below demonstrates the interaction between a weed species and a particular mode of action and the development of herbicide resistance at different speeds. It’s clear to see that over time the use of a herbicide quickly changes from being very effective to becoming extremely ineffectual. In fact, by the fifth year of application the herbicide is failing to eliminate herbicide-resistant weeds. It is particularly alarming that there is a dramatic increase in failure rate from the fourth to fifth season.

What can you do to delay the onset of herbicide resistance?

• Don’t rely solely on herbicides for weed control
• Develop field-specific long-term weed management plans
• Rotate herbicide groups year over year

General guidelines for herbicide rotations:

• Avoid repeated use of the same herbicide or herbicides having the same mode of action in the same field year to year
• Limit the number of applications of a single herbicide or herbicides having the same site of action in a single growing season
• Use mixtures or sequential treatments of herbicides having different Groups, which are active on the same target weeds whenever possible
• Use non-selective herbicides pre-seed or pre-emergence to control early flushing weeds (prior to crop emergence) and/or weed escapes

1. CROP ROTATION

Rotate crops as often as possible to utilize the unique modes of action available within the crop.

2. TIME FERTILIZATION

Time and place fertilizer to benefit your crop, not weeds.

3. TARGET PROBLEM WEEDS

Systematically target problem weeds and respond quickly to changing weed populations.

4. SCOUT OFTEN

Scout often and take note of individual weed response to all applications (pre-emergent, post-emergent and pre-harvest).

5. REMOVE ALL WEEDS

Make sure you remove all weeds before they set seed – even if you have to pull by hand. Remember the old English proverb: One year seeding, seven years weeding.

6. PERIMETER WEED MANAGEMENT

Leaving a 1m-wide weed-free zone around your cropping fields (so new weeds can’t propagate and expand throughout your fields).

7. OUTCOMPETE WEEDS

Decrease your row spacing and increase seeding rates to optimize plant populations, maximize crop competitiveness and minimize time to crop canopy closure.

8. MAXIMIZE YOUR HERBICIDE’S EFFECTIVENESS:
• Match selection of herbicide(s) with your most difficult weeds
• Use full-labelled rates
• Include the best tank mixes and adjuvant(s)
• Use correct spray volume (follow label directions)
• Use correct nozzle spacing and droplet size
• Don’t spray at excess travel speeds, follow label directions
• Apply during the best weather conditions (warm, humid, and sunny conditions with minimal wind)
• Maximize rainfastness intervals
• Time of day (herbicides are most effective when sprayed between 8:00am and 9:00pm)

Herbicide resistance is everyone's problem. This product is a Mix It Up solution.

Visit MixItUp.ca for more simple strategies and solutions.