The recent launch of a new fungicide active called Revysol is good news for Irish cereal growers.

Revysol is an azole and this family have been at the centre of disease control in this country for decades. While many mutations exist in various fungi, especially in septoria, which have resulted in decreased sensitivity to previously existing actives from this family, Revysol offers control of all of these.

It is a unique active, albeit from an existing fungicide family, with a unique formulation. Revysol is an azole with an isopropanol component in its molecule and this enables it to flex and overcome the range of potential mutant strains that have caused difficulty for other azoles due to an alteration in the shape of its binding site.

Revysol is particularly useful against two problematic diseases: septoria in wheat and ramularia in barley.

Flexibility

The active is to be marketed in two different formulations to give flexibility to growers. Lentyma is a 1:1 formulation containing 66.7g/l of both Revysol and Xemium. The second commercial product is Revystar XL. This contains the same two actives but with 100g/of Revysol plus 50g/l of Xemium. Both products have an application rate of 1.5 l/ha and are targeted at both the T1 and T2 fungicide timings.

Dubbed as the Revylution, the new active carries a unique formulation which brings excellent sticking characteristics on the leaf, rapid uptake, good curative activity, excellent protectant activity and an ability to flex into new shapes that should help to overcome even new mutants that are unknown as of now.

As well as these characteristics, the molecule exhibits very strong binding characteristics at the target enzyme to help ensure the rapid death of the disease.