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AHRI and The Queensland Department of Agriculture and Fisheries (QDAF) recently conducted half day seminars focusing on harvest weed seed control. Lead by Michael Walsh (AHRI), these seminars provided research information and practical experience in the use of techniques that target weed seeds during harvest.

Presenters included Michael Widderick (QDAF), Ray Harrington (Darkan grower), Lance Turner (Corrigin grower), Rod Messina (Mullewa grower) and Maurie Street (Grain Orana Alliance).

RESOURCES

Targeting weed seeds at harvest
Michael Walsh, AHRI

Harvest weed seed control was developed in response to herbicide resistance. Michael explores the science behind narrow windrow burning, chaff carts, Bale Direct and the HSD.

Other resources:
- AHRI research
- AHRI insight: Spoiled rotten
AHRI insight: Focus
GRDC webinar recording: Beginner's guide to HWSC
 

DOWNLOAD THE PRESENTATION (PDF: 2.5 MB)
How to burn 10,000 ha of windrows
Rod Messina, Mullewa grower

Rod Messina is possibly the world record holder for hectares of narrow windrow burning. His presentation includes all his tips to go pro, plus other weed control tactics he's now using on farm.

Other resources:
- AHRI insight: Tips 
AHRI insight: Windrow burning – a good place to start
AHRI insight: Burning wet windrows
​- AHRI's financial factsheet including nutrient removal
Windrow chute CAD drawings 
WeedSmart 10 Point Plan: Create and burn narrow windrows
- WeedSmart webinar recording: narrow windrow burn like a pro
GRDC video playlist: IWM – narrow windrow burning

DOWNLOAD THE PRESENTATION (PDF: 6.2 MB)
Chaff carts & weed management
Lance Turner, Corrigin grower

Lance knows the chaff cart is not a silver bullet, but reckons it’s a pretty big linchpin for his weed management system. His presentation covers his 10 year experience of using chaff carts.

Other resources:
AHRI’s Ryegrass Integrated Management (RIM) program
AHRI’s financials factsheet including nutrient removal (new chaff cart) (second-hand chaff cart) 
WeedSmart 10 Point Plan: Tow a chaff cart
WeedSmart webinar recording: grazing chaff dumps
WeedSmart webinar recording: chaff carts as part of the arsenal
GRDC video playlist: IWM – Chaff carts

DOWNLOAD THE PRESENTATION (PDF: 5.9 MB)
Evolution of the Harrington Seed Destructor
Ray Harrington, Darkan grower

Ray has the mindset of seed set control at all costs! His presentation covers the evolution of the HSD and the many tactics he uses on farm in the war against weeds.

Other resources:
- AHRI's financial factsheets including nutrient removal
- WeedSmart 10 Point Plan: Check out the HSD
- WeedSmart video: Capture weed seeds at harvest: HSD
- GRDC Ground Cover TV: Harvester mounted weed destructor

DOWNLOAD THE PRESENTATION (PDF: 1.4 MB)
Potential for weed seed control in Northern NSW
Maurie Street, Grain Orana Alliance

Maurie discusses whether harvest weed seed control (HWSC) will work in the north like it does in WA. His presentation covers the northern weeds, environment and farming systems, along with how to pick the best HWSC option for you.

Other resources:
- Grain Orana Alliance (GOA) website
- GOA resistance survey results: GRDC radio
- Video: Windrow burning in Northern NSW
- GRDC webinar recording: Beginner's guide to HWSC
WeedSmart Ask an Expert: Getting started with HWSC

DOWNLOAD THE PRESENTATION (PDF: 2.9 MB)
Central QLD crop survey results
Michael Widderick, QDAF

Michael covers the need for harvest weed seed control in northern winter crops as a way to improve weed management. His presentation includes an overview of the results of the weed seed retention survey.

Other resources:
- Central QLD survey results (PDF: 1.2 MB)

DOWNLOAD THE PRESENTATION (PDF: 1.6 MB)