Harvest weed seed control

Capture weed seed survivors at harvest using chaff lining, chaff tramlining, chaff carts, narrow windrow burning or weed seed impact mill. There are currently nine Harvest Weed Seed Control (HWSC) tools being used by Australian grain growers. All remove weed seeds at harvest but they come at a different capital cost, running cost and cost of nutrient removal. To compare these tools we must first consider the running cost, and then add the nutrient cost to get a realistic comparison.

Resources:

  • WeedSmart’s Peter Newman has also put together a model on HWSC so you can calculate the cost of different HWSC options on your farm. Download the model.
  • You can learn more about harvest weed seed control in our Diversity Era course, Harvest Weed Seed Control 101.
  • Access two of the Kondinin Group’s Research Reports on mill technology by clicking on the images below.

Narrow Windrow Burning

This option is relatively easy to adopt and has good results for farmers. Some of the downsides to this option include it being time-consuming; the high level of nutrient removal and the risk of fire escapes to name a few.

Learn more about Narrow Windrow Burning

View all resources
Article
Article Apr 08, 2022

Aussie HWSC innovation goes global

When Australian farmers and researchers began using harvest weed seed control, it kick-started a revolution in weed management. Read More
Article
Article Oct 13, 2021

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

Harvest time is an important opportunity to assess weed burden across the farm and be proactive about driving down the weed seed bank. Read More
Article
Article Oct 13, 2020

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 Oct 12, 2020

Mat Freeman, Walkaway WA

While fixing the constraints associated with non-wetting sands is the primary reason for mouldboard ploughing, there is also a weed control benefit. Read More

Chaff Cart

Chaff carts are towed behind harvesters at harvest with the aim of collecting the chaff fraction as it exits the harvester. There are a number of options to manage the chaff, including burning it or placing it in chaff dumps to be used as livestock fee

Learn More About Chaff Carts

View all resources
Article
Article Apr 08, 2022

Aussie HWSC innovation goes global

When Australian farmers and researchers began using harvest weed seed control, it kick-started a revolution in weed management. Read More
Article
Article Oct 13, 2021

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

Harvest time is an important opportunity to assess weed burden across the farm and be proactive about driving down the weed seed bank. Read More
Article
Article Aug 26, 2021

Chaff carts were made for feeding livestock

Baled chaff collected at harvest as a weed control measure is providing a cheap energy source for sheep in confinement paddocks. Read More
Audio
Podcast

S06E20: Regional Update – Adrian Perks, Farmer, Esperance, WA

In this Regional Update, we catch up with Adrian Perks, who is based in Condingup in WA, 70 kilometres north east of Esperance. Read More

Bale Direct

The Glenvar Bale Direct System was developed by the Shields family at Wongan Hills. Essentially, it consists of a large square baler directly attached to the harvester that produces bales from the chaff and straw residues at harvest.

Learn More About Bale Direct

View all resources
Article
Article Apr 08, 2022

Aussie HWSC innovation goes global

When Australian farmers and researchers began using harvest weed seed control, it kick-started a revolution in weed management. Read More
Article
Article Oct 13, 2021

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

Harvest time is an important opportunity to assess weed burden across the farm and be proactive about driving down the weed seed bank. Read More
Article
Article Jun 23, 2020

Harvest weed seed control in a nutshell

There are six HWSC systems currently being used on Australian farms and they have all been developed by farmers. Read More
Article
Article Jun 30, 2015

Which harvest weed seed control tool is right for you?

Our harvest weed seed control special edition e-news was included in a recent GRDC Weed Alerts email. Read More

Impact Mills

Impact mills pulverise the entire chaff fraction, destroying 85% to 98% of the weed seeds that enter the impact mill.

Learn More About Impact Mills

View all resources
Article
Article Apr 08, 2022

Aussie HWSC innovation goes global

When Australian farmers and researchers began using harvest weed seed control, it kick-started a revolution in weed management. Read More
Article
Article Mar 21, 2022

Warren Treasure, Moonyoonooka WA

Warren Treasure, Geraldton WA has found the iHSD impact mill’s all-in-one weed seed destruction to be a real boon over the last five seasons. Read More
Article
Article Mar 03, 2022

I’Anson Family Farms, Marrabel SA

Kym and Katie I’Anson are treating the serious soil constraints on their farms to grow more even crops and squeeze out the weeds. Read More
Audio
Podcast

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

Chaff Tramlining

Chaff tramline machines, like the EMAR chaff deck, are used in controlled traffic farming systems to divert the chaff fraction (containing weed seeds) onto permanent tramlines.

Learn More About Chaff Tramlining

View all resources
Article
Article Apr 08, 2022

Aussie HWSC innovation goes global

When Australian farmers and researchers began using harvest weed seed control, it kick-started a revolution in weed management. Read More
Article
Article Oct 30, 2021

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
Article Oct 13, 2021

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

Harvest time is an important opportunity to assess weed burden across the farm and be proactive about driving down the weed seed bank. Read More
Audio
Podcast

S06E22: Regional Update – Andrew Ruhle, Farmer, Darling Downs

On this edition of the Regional Update, we catch up with Darling Downs and Western Downs grower, Andrew Ruhle. Read More

Chaff lining

This cheap and simple solution involves creating a chaff chute which is attached to the back of the harvester to divert the chaff fraction (containing weed seeds) in a narrow row at the centre of the harvester instead of onto the tramlines, meaning it can also be used in non-CTF farming systems.

Learn More About Chaff Lining

View all resources
Article
Article Apr 08, 2022

Aussie HWSC innovation goes global

When Australian farmers and researchers began using harvest weed seed control, it kick-started a revolution in weed management. Read More
Article
Article Oct 13, 2021

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

Harvest time is an important opportunity to assess weed burden across the farm and be proactive about driving down the weed seed bank. Read More
Audio
Podcast

S06E22: Regional Update – Andrew Ruhle, Farmer, Darling Downs

On this edition of the Regional Update, we catch up with Darling Downs and Western Downs grower, Andrew Ruhle. Read More
Article
Article May 19, 2021

Central NSW growers investigate IWM options

Two growers Central NSW growers demonstrated their use of chaff deck systems to manage herbicide resistant ryegrass. Read More

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