As Australian as you.

As reliable as it is compatible.

CRUCIAL is our local knockdown solution.

Get the most efficient gram for gram knockdown formulation, that’s as Australian as you. From its consistent fully loaded triple salt, triple surfactant, 600 load, through to its outstanding compatibility, together with local Nufarm support, fast brownout of the toughest weeds every time is just a spray away.

Nufarm CRUCIAL features outstanding compatibility with a very wide range of tank-mix partners scientifically proven by the most extensive compatibility testing ever conducted by the Nufarm labs. That means less hassle, less stress and more confidence.




Learn about incorporating Nufarm CRUCIAL into your program.

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Nufarm CRUCIAL for pre-harvest


Australia’s homegrown pre-harvest solution


From pre-sowing to over-the-top (OTT) and pre-harvest, it’s time to get Australia’s most widely registered and efficient gram for gram formulation. Tailor-made for our unique local conditions, Nufarm CRUCIAL, with triple salt, triple surfactant and 600 load is the solution you cannot do without. Make Nufarm CRUCIAL your No.1 this pre-harvest.

  • Triple salt, triple surfactant, 600 load
    • all-in-one fully loaded liquid glyphosate package for ease of use
  • Unrivalled use patterns
    • widest ever label package of any glyphosate formulation, including in-crop over the top registrations in Roundup Ready® Flex® Cotton, Roundup Ready® TruFlex® Canola, Roundup Ready® Canola and canola hybrids with the Optimum GLY® herbicide tolerance trait
  • Excellent efficacy, rainfastness and spray-to-sow
    • penetrates the leaf and translocates FAST… meaning FAST brownout, SHORT rainfastness, 1 HOUR spray-to-sow and the confidence of a great knockdown job
  • Guaranteed tank mixing with other Nufarm products*
    • Outstanding compatibility, with a very wide range of tank-mix partners

Get the CRUCIAL for Pre-Harvest technote today

Nufarm’s CRUCIAL was more effective on the strong resistant ryegrass biotype

The combination of glyphosate salts and surfactant systems have a dramatic effect on how a glyphosate formulation performs in the field.

Weed control differences between formulations can be observed when they are applied under less than ideal conditions, such as stressed weeds or weeds that are developing herbicide resistance.

Dr Peter Boutsalis
Go to the CRUCIAL product page

Having a product we can trust across such a wide variety of uses also makes it really simple for our growers.

We haven’t seen anything else that’s this fast and effective and that we can use across different so many different growing scenarios, with no worries about safety or crop damage.

There’s nothing else like it on the market, especially in the pre-emergent knockdown space.

John Fuelling, Dalby Rural

Nufarm CRUCIAL has a new look, with the same formulation you know and trust. Learn more about our grower-led improvements here.

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