Trusted broad-spectrum disease control
iblon® is the brand name for isoflucypram, a unique SDHI active substance that is the only member of the N-cyclopropyl-N-Benzyl-pyrazole-carboxamides sub-group.
This means it has incomplete cross resistance with other members of the SDHI mode of action group. Where the sensitivity of some other SDHIs has declined for example, against net blotch, isoflucypram is unaffected and continues to deliver high-level efficacy.
iblon® delivers dependable broad-spectrum activity the principal foliar diseases of wheat, barley, oats and other cereals when applied as Plaxium®. If applied as Vimoy®, it can only be applied to wheat crops and needs to be combined with an active substance belonging to a different mode of action group, such as prothioconazole. Whatever your product choice, iblon® has the flexibility in performance to be used at either the T1 or T2 timing.
- Trusted broad-spectrum control – iblon® delivers strong efficacy against the main foliar diseases of wheat and useful activity against the stem-based disease complex (when combined with prothioconazole as in Plaxium®) to give growers confidence that they are achieving the best all-round protection.
- Yield boosting benefits – iblon® has been shown to support yield accumulation through extended green leaf area retention beyond that of Ascra® Xpro®, even in low disease pressure situations1.
- Outstanding Leafshield formulation – iblon® is delivered using the outstanding Leafshield formulation – used in Bayer’s Xpro® range of fungicides – to ensure effective performance without compromising crop or equipment safety.
iblon® is available as Vimoy® (isoflucypram) + prothioconazole-based co-packs, such as Vimoy® + Proline® (prothioconazole) for use in wheat and in a three-way co-formulation as Plaxium® (fluopyram + isoflucypram + prothioconazole) for use in all cereals.
For the 2026 season and beyond, Bayer will offer a range of products featuring iblon® in co-formulation with other active substances for use in cereal crops. These will serve to complement the established products Vimoy® and Plaxium® by extending the range of crop protection products available to growers and ensuring effective resistance management through the inclusion of partners belonging to different mode of action groups.
1 Based on trials performed by Bayer and others.
Plaxium®
Plaxium® is Bayer’s first co-formulated fungicide to contain iblon®.
Use Plaxium® at T1 for strong broad-spectrum performance without compromise, or at T2 for reliable control of Septoria and impressive control of brown rust.
- Plaxium® is a three-way formulation containing iblon® (isoflucypram), fluopyram and prothioconazole. The inclusion of fluopyram, which remains unaffected by changes in the Septoria population, brings a second SDHI with an incomplete cross-resistance pattern to support the efficacy of iblon® while the inclusion of prothioconazole serves to fulfil resistance management guidelines.
- Plaxium® delivers proven efficacy across the key diseases of wheat and other cereals, including Septoria leaf spot, yellow rust, brown rust, powdery mildew, eyespot, Rhynchosporium, net blotch and crown rust.
- Plaxium® utilises the outstanding Leafshield formulation to deliver yield benefits through extended crop greening beyond that seen with Ascra® Xpro® while being crop and equipment safe.
Vimoy®
Vimoy®, in combination with Proline® (prothioconazole), delivers the trusted broad-spectrum benefits of iblon® with the recognised strengths of prothioconazole.
“We have tested iblon® as a straight in the form of Vimoy® mixed with Proline® (prothioconazole) and as a co-formulation in Plaxium® (fluopyram + isoflucypram + prothioconazole). In both instances, it has performed strongly to deliver good overall activity,”
John Clarke
AICC trials executive
“iblon® delivers useful broad-spectrum activity,”
Aoife O’Driscoll, NIAB
Ascra® Xpro® contains bixafen, fluopyram and prothioconazole. Plaxium® contains isoflucypram (iblon®), fluopyram and prothioconazole. Proline® 275 contains prothioconazole. Vimoy® (iblon®) contains isoflucypram. Ascra®, Plaxium®, Proline®, Vimoy® and Xpro® are Trade Marks of Bayer. All other brands listed may be Trade Marks of other manufacturers in which proprietary rights may exist. Use plant protection products safely. Always read the label and product information before use. Pay attention to the risk indications and follow the safety precautions on the label. © Bayer CropScience Limited 2025.