Seed World

New seed treatment shown to boost cereal rooting and yield

A new-generation of cereal seed treatment that has not only been shown to give first-class control of key diseases that threaten crop emergence, but also to visibly improve root growth and boost yield, is being launched in the UK for this autumn. Vibrance Duo is approved for use in winter wheat, winter triticale, winter rye and spring oats and it is the first UK treatment based on the all-new SDHI fungicide, sedaxane, developed specifically for seed treatment use.

Trials across Northern Europe show it has boosted yield by an average of more than 0.5 t/ha compared with untreated seed. But the standout benefit of Vibrance Duo is its ability to boost root development, Syngenta seedcare campaign manager, Mark Bullen, points out.

“Cereal seed treatments are typically used to control diseases that threaten crop establishment,” says Bullen. “Indeed, Vibrance Duo gives outstanding control of major establishment diseases, such as Microdochium and Fusarium. But by boosting root growth, it goes further.

“Farming has already reaped the benefits of keeping foliage healthy. Now, improved root health is seen as the next opportunity for improving crop output. Improved rooting is associated with improved water and nutrient uptake, so crops are able to make better use of available resources.”

Pointing to research findings, Syngenta seedcare technical expert, Michael Tait, says there is plenty of evidence behind the root growth benefits of the new SDHI seed treatment, sedaxane.

“Studies show sedaxane treatment has led to faster root development, even in non-diseased seed,” says Tait. “Further results show improved crop establishment from Vibrance Duo in soils inoculated with Microdochium and Fusarium.”

Dr Jonathan Ronksley, Syngenta field technical specialist, says yield improvements have also been seen in UK on-farm trials.

“Vibrance Duo has also given faster crop establishment, especially when drilled in challenging conditions,” says Dr Ronksley.

“It has also produced increased root length, higher plant counts, better tillering and higher yield than an alternative seed treatment. The UK yield increases seen from using Vibrance Duo in trials would equate to a return on investment for the grower.”

According to Tait, while early rooting benefits lay the foundation for higher yield, outstanding control of Microdochium and Fusarium coupled with a high level of crop safety account for the rapid crop establishment with Vibrance Duo.

“The two active ingredients in Vibrance Duo have a real complementary fit,” explains Tait. “Fludioxonil is already recognised as being kind to the crop and providing a flying start to crop growth in the seed treatment Beret Gold. The addition of sedaxane doesn’t compromise this.

“Sedaxane and fludioxonil are designed specifically for seed treatment use,” adds Tait, “so Vibrance Duo also does not impact on the number of foliar SDHI applications that can be made in the same crop.”