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AscraXpro

AscraXpro is a unique formulation of two SDHI fungicides – bixafen and fluopyram – and the leading azole fungicide prothioconazole.

It’s the first fungicide to combine two SDHIs with an azole. It delivers broad spectrum disease control, including more curative activity against Septoria than any other fungicide, and the highest yields.

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Ascra at T2

Controlling Septoria requires a robust and well-timed fungicide programme, starting with a T0 spray two to four weeks before the T1 application at GS 31-32.

Product choice at these earlier timings will depend on disease resistance characteristics of the wheat variety, drilling date, weather and disease pressure leading up to, and at the point of, application.

However, the T2 fungicide at GS 37-39 consistently sees the greatest yield response and is where the best chemistry should be used to achieve optimum disease control, maintain green leaf area and maximise output.

Widely quoted studies show that 70% of wheat yield comes from keeping the top two wheat leaves free from disease for as long as possible to allow maximum photosynthesis during grain fill. So what attributes should you be looking for from your T2 fungicide?

• Excellent disease control – particularly of Septoria, but also covering other disease threats
• Curativity for kickback to clear up any disease already in leaf two
• Persistency to last through to grain fill
• Consistency in performance whether it rains or shines
• Easy application – minimise the number of cans to use and quickly rainfast to ensure area covered efficiently in disruptive weather.

 

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Delivering yield benefits

The unique properties of Ascra mean that it is ideally suited to the T2 timing in winter wheat. Its ability to control Septoria and deliver outstanding yield benefits gives growers unrivalled protection for their crops and increased profitability.

Ascra boosts disease control, especially Septoria, to new levels thanks to the strong azole backbone of prothioconazole and the combination with two SDHIs in bixafen and fluopyram. The latter makes the difference – increasing curativity and bringing extra consistency – meaning performance reaches a new standard.

What does fluopyram bring?

Fluopyram is a fast-acting SDHI, distributed faster through the leaf than existing SDHI chemistry. This immediate availability increases control of latent disease in the leaf – improving curativity – and creating a product which gives not only better control of Septoria on average, but more consistent control too.

 

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Delivering yield in the absence of disease

Greener leaves

Xpro products can increase the chlorophyll content / photosynthesis in leaves making them bigger, healthier and greener for longer. This allows the plant to provide yield building energy during the critical grain fill period, and yield increases above that from disease control alone.

Bigger roots

In field trials Ascra treated plants have increased root diameter compared with other treatments, both in the top soil and at depth. This indicates the potential of Ascra treated crops to scavenge nitrogen and other essential nutrients more effectively after T2 application.

Hardier plants

In addition to the larger roots in Ascra treated crops, which could make the plants more resilient to drought stress, other field trials have indicated that Ascra treated crops have higher water use efficiency. This means that less water is required to produce a yield gain, crucial in drought years. In drought conditions Ascra yielded 0.74 t/ha more than Adexar, and with sufficient water 0.34 t/ha more than Adexar both in low disease situations.

 

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How is Ascra formulated

The Leafshield formulation enhances Ascra’s application ensuring the product sticks to the leaf on contact before spreading over the leaf to provide the most efficient delivery of disease control benefits.

Protected investment

The Leafshield formulation in Ascra brings the same super-quick rainfastness of just minutes as all the other Xpro formulations. This means growers can capitalise on tight spray windows knowing their investment in Ascra is protected even if it rains within minutes of spraying.

Better coverage

Ascra droplets spread more than competitors, such as Adexar, in spray coverage tests at Silsoe Spray Applications Unit. This high coverage means less chance of disease escape as well as uniform distribution in the leaf, and confidence to use different application techniques, such as air induction nozzles or lower water volumes. 

 

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Using AscraXpro

Ascra belongs at T2

The extra curativity in Ascra, as well as its superior disease control and yield protecting qualities, makes it ideally suited to the flag leaf timing, where you need to protect the yield-generating leaves and take out any latent disease present in leaf two.

Apply it in a robust programme, preferably including a T0 where appropriate, and following Aviator at T1 for best results and to help slow resistance development.

The rate is important

Typically apply at 1.2L/ha – this dose provides the 80% dose of prothioconazole to provide the strong backbone required for Septoria control, and activity on other diseases, such as rusts, mildew and fusarium, while applying an appropriate dose of SDHI chemistry.

Flexible timing

Timing is crucial for getting the best out of fungicides with reducing curativity, and Ascra doesn’t change that fundamentally. The best timing will remain full flag leaf emergence, but if weather goes against you at this key time, then rest assured that Ascra is your best option because of its enhanced curativity to maintain as much yield potential as possible even if delayed.

Can I mix with multi-sites, such as chlorothalonil?

Yes, you can mix multi-sites with Ascra at T2, however, they remain most beneficial earlier in the programme at T0 and T1.

 

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How has Ascra performed on farm?

In the past 3 years we have invited over 100 growers to test Ascra against their T2 standard. 71% of farmers saw better yields using Ascra, with an average yield benefit of +0.23 t/ha using Ascra. 

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Contact one of our technical team for more information or advice on AscraXpro

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