A look at the next generation of cereal disease control - ADAMA In Action 2025
Gilboa: a new mode of fungicide action in cereals
Gilboa, ADAMA’s newest fungicide for cereals, was shown in the field for the first time in 2025.
Featuring a novel active ingredient classified by FRAC as Group 32, Gilboa introduces a completely new mode of action in cereals, in the UK market. Gilboa featured across all our trials sites in 2025, and its performance across multiple ADAMA trial sites has shown consistent promise; strong protection, clean crops, and visible canopy benefits when used within a balanced fungicide programme.
“We know the challenges that lie ahead,” explains Jonny. “Resistance is developing, and growers need sustainable, reliable solutions for long-term disease control. Gilboa provides exactly that, a brand-new tool in the toolbox”.
AVASTEL: Proven Power and Flexibility
While new innovation turns heads, established reliability still wins fields. AVASTEL, ADAMA’s co-formulation of fluxapyroxad and prothioconazole (Asorbital formulation technology), continues to prove its worth in the first half of the programme.
At ADAMA’s Herefordshire trial site, Jonny and Mel stood among clean, healthy plots treated with AVASTEL, and the difference was clear:
“The combination of actives in AVASTEL® provides excellent protection against both rusts and septoria,” says Jonny. “It’s flexible, it’s strong, and it fits comfortably into a diverse variety of programme strategies.”
ARIZONA: Boost and Protect
ARIZONA also shared the limelight in Herefordshire where a detailed comparison of wheat varieties once again showed that the multi-site active ingredient, folpet, adds great value to crop protection programmes. Throughout the summer, Andy and Jonny explored how ARIZONA performs across two contrasting wheats: Dawsum, a moderately susceptible variety, and Champion, which carries greater resistance to septoria.
“We’ve been investigating how ARIZONA can power up programmes,” Andy explains. “We wanted to see how its inclusion enhances efficacy against septoria, improves green leaf retention, and ultimately drives yield.”
Even at mid-season, visual differences were emerging: plots treated with ARIZONA showed stronger canopy health and a slower rate of disease progression.
Trial Highlights from Yorkshire
Moving north to the Yorkshire Wolds, Andy and Jonny have been overseeing one of ADAMA’s most illustrative trial sites. Here, the wheat variety Saki, known for its susceptibility to septoria, is provide a perfect proving of visible fungicide efficacy.
Despite a dry start to the season, septoria was clearly visible.
“That was actually good for us,” says Andy. “It gave us the perfect conditions to test how different programmes hold up under real disease pressure.”
Figure 1: early evidence of Septoria at our Yorkshire site
Within the trial, ADAMA compared traditional chemistry alongside newer formulations, including ARIZONA and the brand-new active ingredient, Gilboa. Early observations have been positive: programmes incorporating either or both products maintained green leaf area significantly better than untreated or standard programmes.
Gilboa’s inclusion at T2 is particularly exciting, giving agronomists and growers a first look at how the new mode of action performs against septoria with the results of the trials providing a valuable insight into how it integrates within wider resistance management strategies.
Gilboa’s inclusion at T2 is particularly exciting, giving agronomists and growers a first look at how the new mode of action performs against septoria with the results of the trials providing a valuable insight into how it integrates within wider resistance management strategies.
