How to Guides
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Problems & Solutions
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27 January 2022
Residual Weed Killers
Residual weed killers create a barrier in the soil to stop weeds germinating and taking hold. Learn how they work, where to use them, and what to expect.
What is the Difference Between a Long-Lasting Weed Killer and An Ordinary Glyphosate Weed Killer?
Residual or long-lasting weed killers provide a barrier in the ground that prevents the weeds from germinating and subsequently getting established in the first place. This is a very different option compared to other products, such as total weed killers, which simply kill and control the weed that has already emerged.
A glyphosate weed killer degrades quickly in soil, so leaves no residues. However, these herbicides, such as Gallup Biograde Amenity, can be mixed with residual products in order to get the control of weeds currently growing and protect against those in the future.
How Long Does a Residual Weed Killer Last in the Soil?
Depending on the residual weed killer that you purchase, they can last in the soil and provide a barrier to stop new weed seeds from germinating for up to six months. Take a look at the table, below, to compare the different residual protection offered by our products.
What are the Best Long Lasting Weed Killers ProGreen Have Available?
At ProGreen we offer a variety of long-lasting weed killers. Please see below a comparison table of a few of the residual weed killers we have available:
| Product | Active Ingredient | Pack Size | How long does it provide control? | Can be mixed with glyphosate? | Professional/Non-Professional |
|---|---|---|---|---|---|
| NoMix Dual Long-Lasting Weed Killer for TDC applicator | 162 g/L isopropylamine salt of glyphosate and 2.22 g/L sulfosulfuron | 750ml | Up to 6 months | No | Professional |
| Weedol Pathclear Weed Killer | 125 g/L glyphosate, 20 g/L diflufenican | 8 tubes (to be combined with water) | Up to 3 months | No - already contains glyphosate | Non-professional |
