The first three-way fungicide co-formulation containing Iblon (isoflucypram) has gained approval for use in cereals, offering growers another option for managing disease in spring 2025.

In autumn 2023, Bayer launched the SDHI active isoflucypram, which is marketed in Britain as Vimoy, and sold in a co-pack with the widely used azole prothioconazole (Proline).

See also: New wheat fungicide provides three-pronged attack

This new three-way formulation, called Plaxium, sees the SDHI in a mixture with fluopyram and prothioconazole. Bayer says it offers robust broad-spectrum activity in the convenience of a co-formulation.

Greg Hanna, fungicide market development agronomist at Bayer, says that following the testing season of 2024, the SHDI active has earned the trust of growers and advisers, delivering reliable control of septoria, yellow and brown rust among other disease threats.

“Plaxium builds on this trusted performance with the simplicity and convenience of an emulsifiable concentrate formulation containing fluopyram and prothioconazole,” he says.

The fungicide can be applied once per season to wheat, barley, oats, rye, triticale and spelt, up to the start of flowering (growth stage 61) at a maximum rate of 1.5 litres/ha.

This gives growers the flexibility to apply the fungicide at the T1 or T2 timing, depending on the seasonal disease pressure and other modes of action used in the programme.

“Iblon has shown itself to be an effective fungicide across multiple disease targets and application timings,” Greg says. “This flexibility has been retained, meaning growers and their agronomists can choose to position Iblon at the timing that best meets their objectives.”

Approval was granted by the chemicals regulation division of the Health and Safety Executive for use in barley, oats, rye, spelt, triticale and wheat in Great Britain.