(Active substances: mesosulfuron-methyl and iodosulfuron-methyl-sodium)
As the leading post-emergence herbicide for use on black-grass in winter wheat, we recommend that you put Atlantis WG at the centre of your black–grass control strategy. Used as part of a programme – preferably in the autumn – it offers good control of both black-grass and rye-grass.
A combination of chemical and cultural control is needed to effectively deal with black-grass. Used correctly, as part of a programme and together with cultural control, Atlantis WG offers the best post-emergent black-grass control available. It is also effective on rye-grass, mayweed and chickweed. Research has shown that using Atlantis WG can reduce losses due to black-grass by as much as five tonnes per hectare.
To get the best out of Atlantis WG, we recommend that you use it as part of a programme on small, actively-growing weeds in the autumn. The use of a suitable adjuvant increases the uptake of Atlantis WG by the leaves of the susceptible weeds. We recommend our adjuvant biopower, which has consistently outperformed other adjuvants in improving the performance of Atlantis WG. It is also important to avoid complex tank-mixes.
We advise you to always use Atlantis WG as part of a programme. This should include cultural controls such as the use of stale seedbeds, as well as an effective non-ALS pre-emergence herbicide such as Liberator (flufenacet and diflufenican). Atlantis WG works best when applied to actively-growing small weeds in the autumn. It should be tank-mixed with an effective residual partner (see diagram).
|Formulation||Atlantis WG is a dust-free granular formulation that has
excellent pouring properties allowing easy transfer to the
sprayer. In the event of a spillage the product is easier to
clean-up than a liquid formulation.
|Active substances||mesosulfuron-methyl (30g/kg) and
|Mode of action||ALS Inhibitor|
|Crops||Atlantis WG may only be used on winter wheat (all varieties).|
|Timing of application||GS 12-13 of the grass weed when the majority have emerged|
|Weed Spectrum||Atlantis WG provides very high and consistent levels of control
of black-grass and rye-grass.
biopower is our adjuvant for use with Atlantis WG and Pacifica.
Because these products act primarily via uptake by the leaves of susceptible weeds, the use of an adjuvant increases uptake. This increased uptake not only enhances the rainfastness of Atlantis WG and Pacifica, but also increases the reliability of the performance under a wide range of environmental conditions.
Our trials have demonstrated that biopower consistently outperforms other adjuvants in increasing the efficacy of Atlantis WG and Pacifica and in enhancing consistency of performance from season to season. These trials have also shown that the use of some adjuvants can be detrimental to the efficacy of these products. See more here
Use biopower at 1 L/ha in order to maximise the efficacy and rainfastness of Atlantis WG and Pacifica.
ALWAYS add biopower to the spray-tank last. Switch off the induction bowl immediately after adding biopower since this can introduce air into the spray-tank and result in excessive foaming.
Atlantis works even when the temperature is low
While some herbicides such as Broadway Sunrise™ (pyroxsulam and pendimethalin) rely on higher soil temperatures to work effectively against grass-weeds, our research shows that Atlantis WG™ is a lot less temperature-dependent.
Weeds can grow even when the soil temperature is low, and while there is active growth it’s the ideal time to treat the weeds. Early treatment increases the effectiveness of the products, reduces competition, and ultimately gives you higher yields.
We carried out research using applications of Atlantis WG plus Stomp™ (pendimethalin - 1000g/Ha) either in early November, or early January. We compared these with applications of Broadway Sunrise at the same time.
In both cases the Atlantis WG programmes were more effective than Broadway Sunrise. In particular, the Atlantis WG tank-mix applied in January delivered 85% black-grass control, while Broadway Sunrise only delivered 10% during the cold weather at the time.
Treating early will deliver better results and Atlantis WG can be used even when soil temperatures are low – if you have active growth then you should consider spraying.
Waiting until March could rob you of two tonnes per hectare
Don’t wait until March to treat your black-grass with Atlantis WG. The longer you wait, the bigger the black-grass, which puts more pressure on the herbicide, and increases the yield loss from crop competition. Many growers wait for traditional spring conditions before using Atlantis WG, but earlier treatment - while there is less competition - will give better control and better yields.
In our Chishill weed screen last year treatment in the middle of February gave around 85% control of black-grass, but this fell to only 65% by the end of March. Trials have shown that leaving your treatment until the end of March can result in average losses of 2 tonne/ha worth around £290.
Treating early will also help where enhanced metabolic resistance (EMR) is a concern, as EMR plants are easier to control when at early growth stages.
These dramatic pictures show just what a difference early treatment makes, not only to black-grass but to bromes and rye-grass too.
Here are the main documents relating to Atlantis WG for you to download. You can also find labels, MSDS, tank-mixes and other key documents for all our products here