Agriculture

SDHI Fungicides are First and Foremost for Controlling Disease

Including a range of plastics, ceramics and metals like titanium with varying results

According to Mark Bullen, seeds and seedcare manager for Syngenta, latest generation SDHI fungicides are first and foremost for controlling disease.According to Mark Bullen, seeds and seedcare manager for Syngenta, latest generation SDHI fungicides are first and foremost for controlling disease.According to Mark Bullen, seeds and seedcare manager for Syngenta, latest generation SDHI fungicides are first and foremost for controlling disease.

But increasingly research is uncovering a range of other beneficial “side effects” over and above disease control, he points out.

“In the case of the new SDHI-based seed treatment Vibrance Duo, available for the first time this autumn, its prime role is to protect emerging seedlings against diseases that jeopardise crop establishment,” explains Mr Bullen.

“However, there is growing evidence that its SDHI active ingredient,sedaxane, also provides added crop health benefits – particularly during dry conditions.

“Results released previously on sedaxane have shown it led to increased root growth, even in non-diseased seed. Deeper roots provide improved scavenging for soil moisture and nutrients.

“But further research at the University of Nottingham has also now shown sedaxane to produce a benefit to photosynthesis in wheat seedlings grown in drought conditions.”

Normally, Mr Bullen says drought-stressed plants become less efficient at photosynthesis, which converts carbon dioxide into the sugars that provide fuel for crop growth. But carbon dioxide conversion in drought-stressed wheat treated with sedaxane was found to be just as efficient as in un-stressed wheat, he notes. “Sedaxane was found to turn up the activity of certain beneficial genes,” he points out.

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