Mix and rotate herbicides

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots.

  • Mix two herbicides at full rates where possible
  • Rotate between mixes, not just between individual herbicides

We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a good message, but an even better message, based on what we now know, is that mixing herbicides is even more effective than rotating between them. And combining the two messages is the best approach that growers and agronomists can take. What we mean by this is to mix two herbicides, both at full rates, and then rotate to another herbicide mix. Weeds find it easy to evolve resistance to simple, predictable weed control. Mix and rotate is neither simple nor predictable for the weeds.

 

Articles

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Article
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How can I strengthen the pulse phase to combat weeds?

Many herbicide-tolerant pulse varieties are very specific in their tolerance to different active ingredients, even from the same mode of action group. Read More...
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How can I use the WeedSmart Big 6 to keep old chemistry working?

Any herbicide program that relies heavily on one or two herbicide modes of action for a target weed is bound to fail eventually. Read More...
Case Study
Case Study

Michael Nichols, Sisters Creek, Tas

When herbicide resistant annual ryegrass arrived on their farm Michael Nichols knew he needed to prevent a ‘stop farming’ event. Read More...
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How does crop competition support other weed control tactics?

Crop competition is a quiet achiever in weed control that also has a synergistic effect when applied with other tactics. Read More...
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News

Velocity resistance flags the value of herbicide resistance testing pre-harvest

High-level resistance to Velocity is confirmed in wild radish. Test survivor weeds this season. Read More...
Article
News

Maximising the benefits of new pre-em chemistry

New pre-emergent herbicides on the market give growers more options for mixing and rotating modes of action. Read More...
Article
News

Plan your attack on the weed seed bank

Here we summarise the key components of the WeedSmart Big 6 strategies and the principles that underpin them. Read More...
Article
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New herbicide helps pulse growers tackle resistant grass weeds

The commercial release of Ultro® (carbetamide) brings a completely different mode of action into the weed control program for pulses. Read More...
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News

Double down on the double break in the high rainfall zone

A long-term trial at Lake Bolac demonstrated the strategies that control ryegrass in high rainfall zone cropping systems. Read More...
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What can I do to control large FTR grass in fallow?

Feathertop Rhodes grass is a major weed in chemical fallows in Australia, and is notoriously hard to kill with glyphosate, but there are other options. Read More...
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News

Testing informs herbicide choice

Herbicide resistance resistance testing proved useful even on a property where there had been limited use of herbicides. Read More...
Article
News

Safe sorghum planting while controlling weeds

Changes to the label use patterns and the launch of a new seed safener product can expand the usefulness of S-metolachlor in sorghum. Read More...
Article
Ask an Expert

Can pulse cover crops tackle multi-resistant ryegrass in irrigated systems?

Field pea provides an effective winter fallow clean to manage resistant ryegrass ahead of planting rice or wheat. Read More...
Case Study
Case Study

Jamie and Susie Grant, Jimbour Qld

Proactive use of automated optical weed detection technology, allows continuous spraying and treating smaller and smaller weeds. Read More...
Case Study
Case Study

Peter and Kylie Bach, Pittsworth Qld

Peter and Kylie Bach are using crops to compete with weeds throughout the year, aiming for 130% utilisation of their cropping land. Read More...
Article
Ask an Expert

How can I set up my summer crops to help manage weeds?

It pays to plan ahead to manage weeds in winter fallows destined from summer crops – such as cotton, sorghum, mungbean and sunflower. Read More...
Article
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What strategies will rein in wild turnip in the northern region?

Wild turnip steals crop yield and requires additional control measures that together cost over $10 million every year across Australia. Read More...
Article
News

Advances made in weed recognition technologies

Australian researchers are developing technologies that will deliver ‘green-on-green’ weed recognition and targeted control in-crop. Read More...
Article
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What impact does dry seeding have on pre-emergent herbicide efficacy?

When dry seeding, it is essential that the maximum amount of pre-emergent product reaches the soil surface. Read More...
Article
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How can I maximise grass weed control using hybrid canola?

For a competitive canola crop to halve grass weed seed set, use a vigorous variety, robust pre-em herbicide and the best agronomic package. Read More...
Case Study
Case Study

Single family, Coonamble NSW

The Singles gain good weed control year round using crops and fallow in both winter and summer on their farm near Coonamble. Read More...
Article
Ask an Expert

How can I ensure my complex tank mix is compatible and will spray out?

Having many products in a tank mix, makes it increasingly difficult to prevent adverse chemical reactions from occurring in the ‘brew’. Read More...
Case Study
Case Study

Jason Rogers, Moree NSW

Keeping weed numbers down, managing patches and minimising weed seed set has been a high priority for Jason Rogers, Moree. Read More...
Case Study
Case Study

Andrew Kenny, Badgingarra WA

Andrew and Gina Kenny (Badgingarra, WA) use an integrated program of crop rotation, mouldboard ploughing, grazing and chaff lining to keep their weed numbers low. Read More...
Article
Article

Post emergent herbicides

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Article
Article

Increase pre-em efficacy through a mix and rotate strategy

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Case Study
Case Study

Tim Rethus, Horsham Vic

Wimmera grower Tim Rethus and his family are taking an integrated approach to the weed management with a strong focus on weed-free crops. Read More...
Case Study
Case Study

Trevor Syme, Bolgart WA

Trevor and Renae Syme are throwing everything they’ve got at revamping non-wetting sands and driving down weed numbers on their property at Bolgart, WA. Read More...
Article
News

Efficient herbicide use pays off

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Article
Ask an Expert

How does mixing herbicide MOAs buy more shots?

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Article
Ask an Expert

Stewardship of synthetic auxin herbicides

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Article
News

Surveys highlight the cross-resistance to herbicides

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Article
Ask an Expert

How can I avoid sub-lethal dosing when spraying weeds?

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Case Study
Case Study

Curry family – Junee, NSW

A desire to minimise the build-up of herbicide-resistant weeds on their Junee property in southern NSW is a driving force behind the Curry family farming operation. Read More...
Case Study
Case Study

Mark Sandow, SA

Herbicide-resistant annual ryegrass has been an ongoing challenge for grain producers in the Mintaro area of South Australia since the 1980s. Read More...
Article
News

Dual trait herbicide tolerance extends IWM options

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Case Study
Case Study

Colin McAlpine, WA

Colin has thrown everything he can at reducing the weed burden on his farm while taking all precautions to protect the available herbicide modes of action. Read More...
Article
News

Can we grow broadleaf crops without clethodim?

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Case Study
Case Study

Greg Martin, VIC

Greg Martin believes resistance had evolved due to a lack in rotation of chemical groups and not enough importance given to controlling survivors. Read More...
Case Study
Case Study

Grant Wilson, VIC

The Wilson’s use a conservative rotation with up to one-third of the farm under vetch or fallow at any one time. Read More...

Podcasts

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Audio
Podcast

S07E11: Dealing with stress on the farm and resistance testing wins

Owen Catto from The Regional Men’s Health Initiative joins us to share some tips on dealing with stress and we hear from Tim Boyes on resistance testing wins. Read More...
Audio
Podcast

S07E09: How smart phase farming can increase yield and a resistance status update

On this podcast, find out about the benefits of smart phase farming and we also get a resistance status update. Read More...
Audio
Podcast

S07E02: Farmers facing price and supply crunch to kill weeds

We discuss the stewardship around Adama's new pre-emergent herbicide, Ultro, and comment on the ongoing supply issues of herbicides and fertilisers. Read More...
Audio
Podcast

S06E39: Getting residual herbicides right after harvest

We discuss how to best use residual herbicides after harvest, how using an optical spray can maximise your use of residual herbicides, and crop topping. Read More...
Audio
Podcast

S06E31: Grazing resistant ryegrass key to weed control success for Scholz family

Murray and Emma Scholz are having a real win with grazing to keep ryegrass at bay. Peter Boutsalis provides an update on clethodim resistance and shares some practical tips on how to keep on top of ryegrass. Read More...
Audio
Podcast

S06E25: With a 450,000 ha cotton crop predicted, getting weed control right counts

On this podcast, we chat to the Northern Grower Alliance CEO, Richard Daniel about some surprising survey results on optical spraying. Read More...
Audio
Podcast

S06E17: Group G tips and lucerne as a fence line weed control tool

We've got new info on Group Gs and nitrogen placement. Also, have you thought about growing a crop to compete with weeds in non-cropped areas? Read More...
Audio
Podcast

S06E13: Benefits of continuous spraying when weeds are small and Terrad’or explainer

On this podcast we look at good spraying practice with WA farmer Tim Critch learn about Nufarm's new Group G herbicide, Terrad'or. Read More...
Audio
Podcast

S06E11: Lupins will benefit from new addition of Reflex in weed control tool kit

In this episode we get the details on the stewardship of Syngenta's new product, Reflex. With so many new products hitting the market and plenty more in the pipeline, it’s beneficial to find out the details about these new products and how they might fit into farming systems. Read More...
Audio
Podcast

What role Group G herbicides are playing in farming systems

This episode focuses on the use of pre-emergent herbicides and knockdowns, with a special focus on group Gs. Read More...
Audio
Podcast

Getting mixing right to avoid glugs & efficacy issues

This episode focuses on getting tank mixes right to avoid glugs and ensure they’re as effective as they can be. Read More...
Audio
Podcast

S05E04: Research is showing that mixing herbicides is the way to go

AHRI researcher Roberto Busi talks about resistance in wild radish and annual ryegrass and why it’s so important to mix and rotate herbicides on the podcast. Read More...
Audio
Podcast

Our new Diversity Era course ‘Pre-emergent Herbicides 101’ is now live

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...

Case Studies

View all
Case Study
Case Study

Michael Nichols, Sisters Creek, Tas

When herbicide resistant annual ryegrass arrived on their farm Michael Nichols knew he needed to prevent a ‘stop farming’ event. Read More...
Case Study
Case Study

Jamie and Susie Grant, Jimbour Qld

Proactive use of automated optical weed detection technology, allows continuous spraying and treating smaller and smaller weeds. Read More...
Case Study
Case Study

Peter and Kylie Bach, Pittsworth Qld

Peter and Kylie Bach are using crops to compete with weeds throughout the year, aiming for 130% utilisation of their cropping land. Read More...
Case Study
Case Study

Single family, Coonamble NSW

The Singles gain good weed control year round using crops and fallow in both winter and summer on their farm near Coonamble. Read More...
Case Study
Case Study

Jason Rogers, Moree NSW

Keeping weed numbers down, managing patches and minimising weed seed set has been a high priority for Jason Rogers, Moree. Read More...
Case Study
Case Study

Andrew Kenny, Badgingarra WA

Andrew and Gina Kenny (Badgingarra, WA) use an integrated program of crop rotation, mouldboard ploughing, grazing and chaff lining to keep their weed numbers low. Read More...
Case Study
Case Study

Tim Rethus, Horsham Vic

Wimmera grower Tim Rethus and his family are taking an integrated approach to the weed management with a strong focus on weed-free crops. Read More...
Case Study
Case Study

Trevor Syme, Bolgart WA

Trevor and Renae Syme are throwing everything they’ve got at revamping non-wetting sands and driving down weed numbers on their property at Bolgart, WA. Read More...
Case Study
Case Study

Curry family – Junee, NSW

A desire to minimise the build-up of herbicide-resistant weeds on their Junee property in southern NSW is a driving force behind the Curry family farming operation. Read More...
Case Study
Case Study

Mark Sandow, SA

Herbicide-resistant annual ryegrass has been an ongoing challenge for grain producers in the Mintaro area of South Australia since the 1980s. Read More...
Case Study
Case Study

Colin McAlpine, WA

Colin has thrown everything he can at reducing the weed burden on his farm while taking all precautions to protect the available herbicide modes of action. Read More...
Case Study
Case Study

Greg Martin, VIC

Greg Martin believes resistance had evolved due to a lack in rotation of chemical groups and not enough importance given to controlling survivors. Read More...
Case Study
Case Study

Grant Wilson, VIC

The Wilson’s use a conservative rotation with up to one-third of the farm under vetch or fallow at any one time. Read More...

Videos

View all
Video
Webinar

Combat Velocity® resistant wild radish with the WeedSmart Big 6

AHRI researcher Dr Roberto Busi explains in this webinar how he discovered Velocity® resistant wild radish populations in two paddocks in the northern Wheatbelt of Western Australia. Read More...
Video
Webinar

No survivors – weed control in cotton, what does it look like in 2022?

Research Agronomist Eric Koetz and WeedSmart Northern Extension Agronomist Paul McIntosh discuss key weed control challenges cotton growers are facing. Read More...
Video
Webinar

Making Every Drop(let) Count – An International Perspective on Spraying Efficiencies

WeedSmart southern extension agronomist Chris Davey and Canadian spray technology expert Tom Wolf discuss efficient and effective spray application. Read More...
Video
Webinar

First cases of glyphosate and paraquat resistant ryegrass in WA

For the first time in Western Australia, annual ryegrass from a cropped paddock was found to be resistant to glyphosate and paraquat. Read More...
Video
Webinar

S-Metolachlor usage in the northern region

WeedSmart's Paul McIntosh and Syngenta Field Biology Manager Rob Battaglia discuss how S-metolachlor works, its efficacy, and what potential resistance problems might be around the corner. Read More...
Video
Video

Get out there and take a resistance test this harvest!

In this WeedSmart Shorts video, Western Extension Agronomist Peter Newman and Southern Extension Agronomist Chris Davey explain the differences between random and selected resistance testing results. They also explain why it's important to get resistance testing done and provide an update on the latest resistance survey data. Read More...
Video
Video

Herbicide resistant hot-spots revealed in the most recent ryegrass survey

Professor Chris Preston explains where the herbicide resistant hot-spots are for herbicide resistance in ryegrass and provides some sage advice around how to get the most out of old and new chemistries. Read More...
Video
Video

Rod Birch on how the Big 6 is keeping weeds at bay at Catalina Farms

Rod Birch (Coorow, WA) gives an overview of what Big 6 principles are working for them. He also explas how they're approaching weed control at new property acquisition, 'Koobabbie', which hadn't changed hands for 115 years. Read More...
Video
Video

WeedSmart Week Forum Day Videos

Watch all the videos from our Esperance WeedSmart Week Forum Day! Read More...
Video
Webinar

Considerations for pre-emergent herbicides with dry sowing

Join Chris Davey, YPAG and WeedSmart Extension Agronomist and Mark Congreve, ICAN Senior Agronomist as they assess the sowing issues in South Australia and discuss strategies on using pre-emergents. Read More...
Video
Webinar

Farmer questions answered on Group G herbicides and optimum application temperature

In this follow-up to last year's webinar on Group Gs, Dr Chris Preston, University of Adelaide, Professor of Weed Management and WeedSmart's Greg Condon focus on farmer questions around Group G herbicide use. Read More...
Video
Webinar

How to make the right decision on using Group Gs in the North

We ask Andrew Somervaille to explain Group G use in both systems and the most optimum use of different Group G products given the range of seasonal conditions in the northern cropping region. Read More...
Video
Webinar

How do I make the right decision on using Group Gs?

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Video
Video

Double breaks – a double shot at annual ryegrass

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Video
Webinar

Testing all of your herbicides for resistance with Roberto Busi

Roberto discusses the current levels of resistance to knock-down herbicides (glyphosate and paraquat), new and old pre-emergent herbicides, and clethodim. Read More...
Video
Webinar

Glyphosate Resistance Update with Peter Boutsalis

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Video
Webinar

You don’t know what you don’t know about managing weeds

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Video
Webinar

New chemistry – what’s new, what’s coming & how to keep them for longer

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Video
Webinar

WeedSmart in HRZ – practical options for dealing with ryegrass

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Video
Video

Increase pre-em efficacy through a mix and rotate strategy

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...
Video
Video

Post emergent herbicides

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...

Fact Sheets

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Fact Sheet

Mixing and batching for agricultural chemical application technical guide

Avoid chemical mixing errors and see how growers are setting up their batching systems for added efficiencies. Read More...
Fact Sheet

Stewardship First SprayBest Guide

Rotating buys you time, mixing buys you shots. Mix and rotate buys you time and shots. Mix two herbicides at full rates where possible Rotate between mixes, not just between individual herbicides We have made a big fuss in the past over rotating between herbicides from one year to the next. This is still a […]...

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