Stop weed seed set

Take no prisoners

It sounds a little obvious, but annual weeds must set seed if the species is to persist, so stopping weed seed set is a critical strategy to manage herbicide-resistant weeds. Stopping seed set does two things, 1. It reduces the size of the weed seed bank, and 2. It acts as a second knock to clean up survivors to other selective herbicides, preventing resistance evolution and prolonging the life of the selective herbicides.

One comment that you will hear time and time again from successful grain growers is, “we never miss an opportunity to stop seed set”. Sure, the opportunity does not always present itself, but when it does we owe it to ourselves to stop seed set at all costs and take no prisoners.

Check out the GRDC’s latest fact sheet on pre-harvest herbicide use (including crop topping).

The key takeaways:

  • Aim for 100% control of weeds and diligently monitor for survivors in all post-weed control inspections.
  • Crop top or pre-harvest spray in crops to manage weedy paddocks,
  • Consider hay or silage production, brown manure or long fallow in high-pressure situations.
  • Use all appropriate strategies in the pasture phase to reduce the weed seed bank prior to the cropping phase.
  • Consider shielded spraying, optical spot spraying technology, targeted tillage, inter-row cultivation or chipping.
  • Windrow (swath) to collect early shedding weed seed.
  • Use two or more different weed control tactics (herbicide or non-herbicide) to control survivors.
  • In cotton farming systems, consider late-season strategic tillage operations for better overall weed and Helicoverpa pupae control.

Articles

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WeedSmart Big 6 on WA’s Low and Mid rainfall farms

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WeedSmart for organic croppers

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Jackson family, Gurley NSW

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What are the economic benefits of diverse rotations?

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Can I take an integrated approach to summer fallow management?

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Windrowing barley plus HWSC in the high rainfall zone

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Can annual ryegrass be beaten in the Northern region?

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Tackle weeds and herbicide resistance with the Big 6

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Plan your attack on the weed seed bank

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Resistant ryegrass challenges disc seeding systems

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Expanded options for spot sprayers

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Investigating the role of competitive wheat against three northern region weeds

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Are we gaining ground against herbicide resistant weeds?

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Resistant ryegrass found in summer crops and further north than ever

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Simon Burgess, Conara Tasmania

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Stop ryegrass in its tracks: First step is to prevent seed set

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Michael Nichols, Sisters Creek, Tas

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How does crop competition support other weed control tactics?

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

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Jamie and Susie Grant, Jimbour Qld

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What can I do at harvest to reduce my future weed burden?

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Advances made in weed recognition technologies

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Elton and Pam Petersen, Moonie Qld

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Kurt Mayne, Rolleston Qld

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Make seedbank management your priority this year

Take no prisoners It sounds a little obvious, but annual weeds must set seed if the species is to persist, so stopping weed seed set is a critical strategy to manage herbicide-resistant weeds. Stopping seed set does two things, 1. It reduces the size of the weed seed bank, and 2. It acts as a […]...
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Jason Rogers, Moree NSW

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Take no prisoners It sounds a little obvious, but annual weeds must set seed if the species is to persist, so stopping weed seed set is a critical strategy to manage herbicide-resistant weeds. Stopping seed set does two things, 1. It reduces the size of the weed seed bank, and 2. It acts as a […]...
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Crop topping, using Sharpen & getting ready for harvest

Take no prisoners It sounds a little obvious, but annual weeds must set seed if the species is to persist, so stopping weed seed set is a critical strategy to manage herbicide-resistant weeds. Stopping seed set does two things, 1. It reduces the size of the weed seed bank, and 2. It acts as a […]...
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Take no prisoners It sounds a little obvious, but annual weeds must set seed if the species is to persist, so stopping weed seed set is a critical strategy to manage herbicide-resistant weeds. Stopping seed set does two things, 1. It reduces the size of the weed seed bank, and 2. It acts as a […]...
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Andrew & Jocie Bate, Gindie Qld

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Beefwood Farms, Moree NSW

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Day family, Lockhart NSW

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Tim Rethus, Horsham Vic

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Take no prisoners It sounds a little obvious, but annual weeds must set seed if the species is to persist, so stopping weed seed set is a critical strategy to manage herbicide-resistant weeds. Stopping seed set does two things, 1. It reduces the size of the weed seed bank, and 2. It acts as a […]...
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Take no prisoners It sounds a little obvious, but annual weeds must set seed if the species is to persist, so stopping weed seed set is a critical strategy to manage herbicide-resistant weeds. Stopping seed set does two things, 1. It reduces the size of the weed seed bank, and 2. It acts as a […]...
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Mark Sandow, SA

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Podcasts

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S8E20: Regional Update – Dan Skerman, Grower and Agronomist, Dalby, Qld

This week on the Regional Update, we are joined by grower and Nutrien agronomist Dan Skerman, who talks about his summer/winter rotation and the weed control practices he deploys on the farm. Read More...
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S08E19: Crop preparation ahead of harvest and optimum harvester set-up for HWSC

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S08E14: How to deal with resistant ryegrass incursions and an update on the Single Shot

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S08E02: Harvest recap across the regions

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S07E19: Crop topping tips to stop weed seed set pre-harvest

Stopping weed seed set with crop topping is critical to prevent weeds coming back with a vengeance next year. Listen to this podcast for tips on your region. Read More...
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S07E13: Tackling brome and ryegrass in the Mallee at WeedSmart Week Mildura

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S06E37: Controlling late season weeds and driving down the weed seedbank

After couple of good years of rain in the Southern Region, weeds like ryegrass are popping up through the crop. So how do we deal with them? Read More...
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S06E35: How giving the soil a light tickle can help with uniform weed control

On this edition of the podcast, we’re looking at how giving the soil a light tickle can help with uniform weed control with Shane Kelly from Kelly Tillage. Read More...
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S06E33: Why crop topping is a great tool to prevent weed seed set

It's hard to believe that harvest is just around the corner! In light of this fast approaching reality, we wanted to talk about crop topping and spray topping. Read More...
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S06E10: New green-on-green autonomous spraying technology overview

Goldacres technical guru, David Tuppen talks to us about the latest innovations in spray technology. Read More...
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US weed control group GROW joins forces with WeedSmart and our pre-harvest guide

Take no prisoners It sounds a little obvious, but annual weeds must set seed if the species is to persist, so stopping weed seed set is a critical strategy to manage herbicide-resistant weeds. Stopping seed set does two things, 1. It reduces the size of the weed seed bank, and 2. It acts as a […]...
Audio
Podcast

Crop topping, using Sharpen & getting ready for harvest

Take no prisoners It sounds a little obvious, but annual weeds must set seed if the species is to persist, so stopping weed seed set is a critical strategy to manage herbicide-resistant weeds. Stopping seed set does two things, 1. It reduces the size of the weed seed bank, and 2. It acts as a […]...

Case Studies

View all
Case Study
Case Study

Jackson family, Gurley NSW

The 1700 ha family operation is based on a robust winter cropping program featuring wheat, barley, chickpea, canola and linseed to help keep weed numbers low and manage risk. Read More...
Case Study
Case Study

Rhys Daniels, Capella Qld

The Daniels run a predominantly summer-cropping program and have many tactics in place to keep their weed numbers down. Read More...
Case Study
Case Study

Simon Burgess, Conara Tasmania

Reconfiguring paddocks for irrigation can bring up many issues related to previous management and land use, including weeds. 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...
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

Elton and Pam Petersen, Moonie Qld

The Petersens have rapidly regained control of glyphosate-resistant summer grasses using automated spot-spraying technology. 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

Kurt Mayne, Rolleston Qld

Kurt Mayne is impressed with the benefits that have come with the addition of an optical sprayer to their weed control program. Read More...
Case Study
Case Study

Messina family, Mullewa WA

Weed-identifying cameras are allowing for real-time weed detection and tailored herbicide application in-crop. 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 & Jocie Bate, Gindie Qld

A desire to alleviate compaction on their farm is the driving force behind Andrew and Jocie Bate's agtech venture into robotics. Read More...
Case Study
Case Study

Beefwood Farms, Moree NSW

Glenn Coughran has used optical sprayers as the foundation of a rejuvenated weed control program over the last 14 years. Read More...
Case Study
Case Study

Day family, Lockhart NSW

Mark Day and his brother Steven run a highly efficient cropping rotation on their family farm at Lockhart, NSW. 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

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...

Videos

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Biological control of crop weeds – development of novel tools and approaches for integration

In this webinar we discuss the use of pathogens and insects to control crop weeds safely in the environment. Read More...
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Precision weed control – where are we at?

Mark Saunders and Ben White (Kondinin Group) discuss the latest advances in spraying technology, green-on-green and green-on-brown camera developments, AI and robotics, drone and weed mapping, and more. Read More...
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Detect, then spray

The Singles have been using the air-borne weed sensor, Single Shot, to rapidly detect and map weeds on their dryland cropping property. Read More...
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Optical spray has a good fit in CQ

Kurt Mayne has been impressed with the benefits that have come with the addition of a WEED-IT to their weed control program. Read More...
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Farming moisture : Beating weeds

Take no prisoners It sounds a little obvious, but annual weeds must set seed if the species is to persist, so stopping weed seed set is a critical strategy to manage herbicide-resistant weeds. Stopping seed set does two things, 1. It reduces the size of the weed seed bank, and 2. It acts as a […]...
Video
Video

Mechanical desiccation of mungbeans

Take no prisoners It sounds a little obvious, but annual weeds must set seed if the species is to persist, so stopping weed seed set is a critical strategy to manage herbicide-resistant weeds. Stopping seed set does two things, 1. It reduces the size of the weed seed bank, and 2. It acts as a […]...
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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...
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Video

WeedSmart Week Forum Day Videos

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

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

Take no prisoners It sounds a little obvious, but annual weeds must set seed if the species is to persist, so stopping weed seed set is a critical strategy to manage herbicide-resistant weeds. Stopping seed set does two things, 1. It reduces the size of the weed seed bank, and 2. It acts as a […]...
Video
Webinar

WeedSmart in HRZ – practical options for dealing with ryegrass

Take no prisoners It sounds a little obvious, but annual weeds must set seed if the species is to persist, so stopping weed seed set is a critical strategy to manage herbicide-resistant weeds. Stopping seed set does two things, 1. It reduces the size of the weed seed bank, and 2. It acts as a […]...

Fact Sheets

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Fact Sheet

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Windmill grass – Northern Region

Understand the ecology and effective management tactics to better manage this key weed. Read More...
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Alternative herbicides for management of Group A herbicide-resistant barley grass in field pea

Control of Group A herbicide-resistant barley grass in field peas can be difficult. This factsheet outlines alternative herbicide options. Read More...

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