AHDB trials to give farmers independent biofungicide data

Independent data on biofungicide performance will be available to farmers, thanks to a series of AHDB-funded pilot trials.

The replicated field trials will test the effectiveness of biofungicides against Septoria tritici in winter wheat over two cropping years (2025-26 and 2026-27).

Biofungicides are a type of biopesticide and are regulated as plant protection products.

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Frequently used in high-value horticultural markets, the pilot trials will assess their disease management performance across cereal programmes.

AHDB lead crop protection scientist Sacha White says:

“Biofungicides have good potential for the arable sector, but their biological nature means they need particularly careful integration within crop protection programmes.

“This work will specifically examine evidence of efficacy in field conditions, where numerous factors can impact their performance, such as weather, disease progression and the wider spray programme.”

The pilot trials will focus on:

• Septoria tritici control due to the economic importance of this disease in UK winter wheat
• The availability of biofungicide products with disease-management potential
• The relatively high number of preliminary research findings.

Biofungicides will be tested in line with the manufacturer’s recommendations on two varieties with different levels of resistance to Septoria tritici – a moderately resistant and susceptible variety – as part of conventional winter wheat fungicide programmes.

By varying conventional fungicide dose, the trials will help reveal the point at which biofungicides start to contribute to disease control and yield gains.

Independent research

A consortium with a strong track record of delivering trusted, independent research to support effective crop disease management has been appointed to lead the research.

Organisations include Scotland’s Rural College, Adas and Niab, which already manage an extensive network of efficacy trials, as part of AHDB’s long-term fungicide performance programme.

By working closely with the agrochemical industry, the most promising pre-commercial products will be identified and tested.

This will prime the release of product information soon after the appropriate authorisations for use have been secured.

Results will be communicated throughout the project and build upon the proven approaches established in the fungicide performance programme.

This includes the provision of updates at the annual AHDB Agronomy Conference, with the next event in Solihull scheduled for 9 December 2025.

For more project information, visit ahdb.org.uk/biofungicide-research