Nufarm Terrad’or is a 700g/kg formulation of Tiafenacil. Since launching in 2021, it has gained a name as the next generation of Group 14 herbicides, thanks to its performance on notoriously hard-to-kill weeds.
According to B&W Rural agronomist Chris Maunder, the results have been impressive.
“I’ll absolutely be using Terrad’or as a replacement for other Group 14 spikes in our rotation,” Chris said.
“I’ve been working as an agronomist here in Moree for 25 years, and I see it as a better fit than the older Group 14 technology that we’ve had to use in the past.”
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.
“Terrad’or has been a very handy Group 14 product for us. We’ve been using it in the fallow, mainly before sowing winter crops. We’re finding that it’s doing a very good job as a spike on some of the hard-to-kill broadleaf weeds like milk thistle and marshmallow. We’ve also been having some issues with glyphosate resistance in the district, and Terrad’or has been very useful as a bit of a resistance breaker for the ryegrass,” Chris said.
Agronomist Chris Maunder walks through a paddock with Nufarm's Lauryn Riordan
“We got very fast brownout with Terrad’or, which is nice to see on weeds like milk thistle," he added.
"Terrad’or has also been really fast and effective on marshmallow, even in areas where we’ve been having marshmallow problems. I was especially interested to see Terrad’or’s true grass activity in action on ryegrass, which was very good. We had areas with known glyphosate-resistant ryegrass and it’s done the job we wanted.”
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. It has 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.
“The key to the appeal of Terrad’or for me is the flexibility it gives us. The short plant-back – an hour on cereals and only a couple of weeks in front of canola – gives us a good opportunity to use it as a spike in front of planting. Terrad’or is certainly performing a lot better than the older Group 14 technology. We’ve been mixing it with glyphosate – specifically CRUCIAL – but we’ve also been mixing it with paraquat as a double-knock,” Chris explained.
“I’ll definitely be recommending Terrad’or to growers in the future. It’s a very well-priced product, it’s doing a good job and it’s a good fit for our growers.”
This article was written by Nufarm for Seasons magazine.
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