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How does Strobilurin chemistry work and why does loading matter?

Cereals
27.04.2017
AMISTAR XTRA provides up to six weeks foliar protection and has excellent activity on Rusts, Net Blotch, Powdery Mildew and Yellow Leaf Spot.
AMISTAR XTRA provides up to six weeks foliar protection and has excellent activity on Rusts, Net Blotch, Powdery Mildew and Yellow Leaf Spot.

How does Strobilurin chemistry work? There are some key differences compared to Triazole fungicides according to Syngenta Solutions Development Manager, Garth Wickson.

“Strobilurin chemistry is designed to work primarily close to the leaf surface not inside the plant,” Garth said.

“This provides a protectant shield around the outside of the leaf and stops disease entering.”

Garth said the reason why this matters is that to get the long lasting protection from Strobilurin chemistry you need to apply robust rates.

“AMISTAR XTRA® is the highest loading Strobilurin product available, delivering significant benefits over low Strobilurin-loaded competitors.”

At 400 mL/ha in wheat and barley, AMISTAR XTRA has more than double the grams of Azoxystrobin per hectare (g ai/ha) compared to Radial* at 420 mL/ha, Veritas* at 315 mL/ha and Tazer Xpert** at 500 mL/ha.

“If you want the same, or close to loading as AMISTAR XTRA, you need to double the rates of all three of these products.”

“This most likely won’t be economical compared to AMISTAR XTRA at the 400 mL/ha rate,” he said.

The formulation of AMISTAR XTRA is also a key differentiator. The Suspension Concentrate (SC) formulation of AMISTAR XTRA has been specifically designed to maximise crop safety and ensure maximum efficacy of the active ingredients applied.

“AMISTAR® Technology is the proven technology behind the brand and has a proven track record of performance and quality."

“Our formulations are optimised for maximum efficacy, ease of use and superior quality products, backed by Syngenta’s commitment and expertise,” Garth said.

Invented by Syngenta, AMISTAR Technology was synthesised for the first time at Grangemouth in the United Kingdom. The Grangemouth site has nearly 100 years of experience in chemical development and manufacturing.

AMISTAR XTRA provides up to six weeks foliar protection and has excellent activity on Rusts, Net Blotch, Powdery Mildew and Yellow Leaf Spot.

Its two Modes of Action provide activity on all key stages of disease development, it is rain fast within two hours of application and has good compatibility.

*Registered products of ADAMA.
** Registered product of Nufarm.

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