Cereal fungicide granted full authorisation

A new broad-spectrum fungicide will be available to growers for use across a range of winter and spring sown cereals this season.

It follows regulatory approval for Plaxium – the first first three-way formulation fungicide from Bayer containing Iblon (isoflucypram). Mixed with fluopyram and prothioconazole, Plaxium offers broad-spectrum activity in the convenience of a co-formulation.

“Iblon is a proven and highly effective active substance that has dependable broad-spectrum activity against the principal foliar threats of cereal crops,” says Bayer fungicide market developer Greg Hanna.

Co-pack

Marketed in Britain as Vimoy, SDHI active isoflucypram was launched by Bayer in autumn 2023. It is sold in a co-pack with the widely used azole prothioconazole (Proline).

Plaxium is seen as a logical development following that launch.

“Following the testing 2024 season, Iblon, commercially available as Vimoy, has earned the trust of growers and advisers delivering reliable control of septoria, yellow and brown rust among other disease threats.”

Performance

Mr Hanna says Plaxium builds on this success with the simplicity and convenience of an emulsifiable concentrate formulation containing fluopyram and prothioconazole.

Following approval by the Chemicals Regulation Directorate, Plaxium 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 means growers have the flexibility to apply at either the T1 or T2 timing depending on the seasonal disease pressure and other modes of action used in the programme, explains Mr Hanna.

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