Identification of Trichoderma aggressivum on compost

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Identification of <em>Trichoderma aggressivum</em> on compost
  • Method Used
  • Standard Turnaround Time
    14 working days

Infection can lead to up to 100% mushroom crop loss. Mixing methods and the break up of compost can spread a small infection through large volumes of compost rapidly.

As large scale compost production and mixing operations continue to grow in popularity, due to the cost time savings of such large scale production methods, the risk of T. aggressivum spreading is increased.

Trichoderma aggressivum produces mycelia that are indistinguishable from Agaricus during spawn run so it is difficult to distinguish in the early stages of infection.

When sending plant pathogens and invertebrate samples from outside England and Wales for testing please email the Crop health team ( who will issue you with the relevant Letter of Authority to ensure your samples are not delayed upon entry to the UK.

Submitting your Sample

When submitting your sample please follow the guidelines outlined within our sample shipping information.

The relevant signed sample submission form must be included (in a separate bag if sample is damp); failure to send a sample submission form may result in a delay of your sample being tested and make diagnosis more difficult. To help us process your samples in the most efficient way please fill in as much information as possible on the relevant form below. Please ensure you provide your email address, 'Your Ref', 'Purchase order no' and 'Name and Address for Invoice' in the sections where applicable.

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Method Used




Minimum Sample Weight


Turnaround Time

10 working days

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