GFM Network News


Harrington Seed Destructors are widely used in Australia.

Destructor’s weed escapes still fail to germinate

Microscopic abrasions allow microbes to infect embryonic weeds

Many weed seeds that appear undamaged after passing through a Harrington Seed Destructor still fail to germinate, say researchers at the University of Illinois. Developed and widely used in Australia, the HSD is mounted on the back of a combine and crushes weed seeds to prevent them from germinating. A University of Illinois release says



Provincial weed specialist Tammy Jones says leaving small patches of survivors can quickly result in a huge problem as new and highly competitive herbicide-resistant weeds have arrived.

Losing the war on weeds

Tammy Jones has been doing the math on where herbicide resistance is taking Manitoba farmers and the numbers are grim

Tammy Jones spent four hours last summer wrestling with about 300 waterhemp plants in a Manitoba field, yanking them out of the ground by the roots and carrying them to the field edge for destruction. The provincial weed specialist was trying to demonstrate the value of controlling what might seem to be small patches of

The Harrington Seed 
Destructor has come a long way since it was first developed in 2012.
 Originally a tow-behind unit that 
attached to the back of the combine, the new weed seed management tool is now a mill that can be integrated with the combine ― at half the price.

Is the weed seed ‘destructor’ ready for prime time in Canada?

Aussie invention is much cheaper, easier to use, but is still in the ‘promising, not proven’ category

In the battle against herbicide-resistant weeds, the Harrington Seed Destructor might just win us the war — if farmers can justify the $100,000 price tag. “If herbicides are still working, it can be hard to convince producers to spend that kind of money to purchase this kind of equipment,” said federal research scientist Breanne Tidemann.

“We’ve actually sent people out into fields with cameras in Saskatchewan and Alberta and Manitoba to actually capture the weeds and crops that are growing right here.” – Daniel McCann, Precision.ai.

Smart spot spraying still has a way to go

Farmers need to be 100 per cent confident these new technologies will work when they hit the field

Like any developing technology, spot-spraying systems are far from perfect. In a Manitoba demonstration this July, attendees noted that the WEEDit system missed some smaller weeds during a single pass. That could be addresses by adjusting sensor sensitivity or by turning on “dual mode,” which sprays a constant quarter-rate to take care of less hardy


VIDEO: Deciding when to spray to wipe out weeds

Know your economic threshold before firing up the sprayer

Deciding when to spray is key to limiting the spread of weeds and capturing the best yield your crop can offer. As with nearly every aspect of crop production, weather plays a key role and the amount of precipitation in a growing season  – and the timing of your herbicide application – will go a

Manitoba Agriculture has recently confirmed more cases of Tall waterhemp in the province. It’s a tier-one noxious weed that must be destroyed no matter where it’s found.

New cases of Tall waterhemp found in Manitoba

This is a Tier 1 noxious weed that Manitoba Agriculture wants to prevent from spreading

Tall Waterhemp has been confirmed in four new Manitoba fields and there are rumours of more, Manitoba Agriculture weed specialist Tammy Jones said in an interview Aug. 2. Tall Waterhemp is a Tier one noxious weed that must be destroyed no matter where it’s found, but that can include hand weeding within crops where practical,

Farmers who maybe weren't too initially concerned about weed pressure will need to keep a close eye on fields.

A messy year for weeds

Farmers didn’t see many weeds early this year, but agronomists warned that the flush was coming

Manitoba’s spring weather may have set weeds back, but the spray season hasn’t been a picnic for farmers either. Provincial weed specialist Tammy Jones warns that producers might be in for a tough weed control season, despite cool temperatures and dry conditions keeping weeds from gaining ground early this year. Why it matters: Clean fields this spring may have


Kochia's fuzzy leaves makes treating it with a herbicide more of a challenge.

Dry year adds to spray considerations

Manitoba’s weather lately means weeds have toughened up and herbicides may have an uphill battle if weeds aren’t growing vigorously

This year has brought its own quirks to weed control. Kochia is out in force again this year, provincial weed specialist Tammy Jones said. The plants’ fuzzy leaves create their own challenges for herbicide contact, even if the kochia is not showing glyphosate resistance. Glyphosate-resistant kochia has become a significant headache and cause for worry

Manitoba Agriculture's Lionel Kaskiw says cold temperatures are hindering weed growth, but also rendering crop protection products less effective.

Cool weather casts questions on weed burn off

Weeds haven’t exactly flourished in the cold this spring, but the province warns that they are germinating, and the cold itself lends challenges to spraying them out

That spring burn off may not be doing what it’s supposed to if temperatures stay low. Lionel Kaskiw, farm production advisor with the province, is reminding farmers to watch their thermometers when deciding if and when to do a pre-emergent herbicide pass. Why it matters: A cold spring has stunted weed growth, but it also