01/03/2024

In barely two years on the market, Nufarm’s Terrad’or has become Australia’s number one spike herbicide.

Terrad’or is a 700g/kg formulation of tiafenacil. Since launching in 2021, it’s gained a name as the next generation of Group 14 herbicides, thanks to its performance on notoriously hard-to-kill weeds.

The results speak for themselves, according to Rachel Minett, Agronomist for Nutrien Esperance in WA. “We’ve used Terrad’or quite a fair bit this year in our knockdown sprays and summer sprays and we’re really, really happy with how it’s going so far,” said Rachel. “It’s been very effective on the larger, harder-to-kill broadleaf weeds such as marshmallow, fleabane and milk thistle. Ideally, we do a double-knock for marshmallow, but that’s not always the case, so adding a really good-quality Group 14 spike in the mix has certainly helped with control.”

Control tough weeds and manage resistance

Terrad’or’s activity on grasses, particularly control of low to moderate glyphosate resistance in ryegrass, is one of its biggest advantages for growers. “We experimented with Terrad’or at a 40g rate pre-barley last year,” said Rachel. “Along with marshmallow in the paddock, we had milk thistle and we had some one- to two-leaf ryegrass as well. We added Terrad’or in the paraquat pass just to see if we got improved brownout and speed of brownout, which I think we did. We were very comfortable with the results,” she said.

Short plant-backs and flexibility put Terrad’or ahead of the pack

Terrad’or’s flexibility sets it apart from the competition, particularly for growers of cereals and pulses, with no residual activity and one-hour plant-backs for wheat, lupins, lentils, sorghum, barley, faba beans and chickpeas, as well as a one-week plant-back for canola at a 15g/ha rate. This versatility, along with the fact that it’s an excellent mix partner with both paraquat and glyphosate, means Terrad’or is the only Group 14 spike growers need in the shed.

“I think it will replace some of the other Group 14 products,” said Rachel. “I rate it as good as the competing Group 14 spikes but without the plant-back constraints. You just have greater flexibility with where you can use it. [I’d recommend] using it pre-seeding canola and wheat - I’d definitely be pushing it in that space. It’s cost effective without any associated plant-back constraints so it’s a good fit.”

For further information about Terrad’or, a comprehensive technical guide is available on the Nufarm website.

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The information provided in this article is intended as a guide only. Information contained in this article has been provided by the manufacturer/ You should not rely on the information in this article, and it should not be considered advice. You should seek professional advice regarding relevant factors specific to your situation. This article does not take into account variable conditions that may impact performance. Always read and follow label directions before using any product in this article. To the maximum extent permitted by law, Nutrien Ag Solutions Limited and its related associated entities will not be liable for any loss or damage suffered by any person arising out of any reliance on any information contained in this article.