• DESTROYS up to 99% of targeted weed seeds as you harvest (AHRI/Uni SA)
• IMPROVES future weed control, reduces herbicide resistant weeds
• ELIMINATES burning with nothing to do after harvest
• EASY GRAIN LOSS CHECKS with rear hatch access
• SIMPLE IHSD BYPASS for windrowing and/or harvesting without iHSD
• ONE PASS PROCESSING, no chaff carts, no windrows
• BUILT-IN STONE TRAP reduces foreign objects entering the mills
• SPACE TO REMOVE SIEVES without removing iHSD (excluding John Deere 1 piece sieves)
• TESTED & PROVEN ability to handle high capacities & Australian harvests
• AUSTRALIAN designed & built after 20 years of development
• BACKED UP with service & support from a national dealer network

IHSD Instructional Video

Watch: A description of how the iHSD is built and how it works.

Watch: Stone Trap - a piece of mind and easy inspections

Watch: How to perform daily pre-harvest inspections

Ray’s idea was brilliantly simple - what if there was a way to reliably destroy weed seeds mechanically during the harvest process? Enter iHSD technology: the chaff stream from a combine harvester is intercepted and fed directly into a high speed mill that pulverises the chaff, including weed seeds that would otherwise pass through the harvester and be returned to the field.

Enter the Australian Grains Research and Development Council (GRDC), who understood the importance of Ray’s idea and provided funding and UniSA provided research and development expertise to further develop iHSD technology.

In 2016 the first integrated Harrington Seed Destructor was tested on Australian soil- with great success, where up to 99% of weed seeds were pulvarised until no longer viable.

Two Hydraulically driven mills were retrofitted onto the rear of a harvester. This has since been further developed to a mechanical direct drive system.

iHSD Independant Research

Whether you have a horizontal iHSD impact mill or are looking to get into this technology with the newly-released vertical configuration, you can rest assured that the kill rate of both configurations has been independently proven to be 98 per cent for annual ryegrass.

Dr Michael Walsh, Director Weed Research, Faculty of Science, The University of Sydney has been testing the efficacy of impact mills on weed seeds since the early days of development of the Harrington Seed Destructors.

“The vertical configuration of the iHSD mills changes the direction of the chaff flow into and out of the mills and this can affect the processing of the chaff and potentially the efficacy of weed seed destruction,” he says.

“Having previously shown that the horizontal iHSD impact mill can achieve at least 98 per cent weed seed kill, we were keen to repeat the test for the vertical mill configuration.”

During the 2018 harvest, a wheat crop at Broomehill was used to test the vertical mill. Twelve 20 m strips were marked out in the wheat crop where there was no annual ryegrass present. These plots were used to test the efficacy of the vertical mill at three different harvester speeds – 4, 6 and 8 km/hr.

“The result of this testing was a weed seed kill rate of at least 98 per cent for the vertical iHSD impact mill, regardless of the harvester operating speed of 4, 6 or 8 km/hr,” says Dr Walsh. “This level of weed seed destruction is equivalent to that of the horizontally mounted mills that we have tested previously.”

WATCH: iHSD: A Glimpse of the Future (WeedSmart Webinar: Emerging Trends with Technology and Weeds) Read more here.

WATCH: Australian Herbicide Resistance Initiative (AHRI): The iHSD (integrated Harrington Seed Destructor) has arrived. Read more here.

WATCH: ABC Landline talks to inventor, Ray Harrington, as overseas interest in the IHSD picks up.