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Monitoring reveals an increase in aphid virus incidence

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New monitoring data from the UK Aphid Monitoring Network suggests a greater proportion of autumn aphids are carrying Barley yellow dwarf virus (BYDV) than has typically been seen in recent years, Data collected between 2020 and 2024 showed that, on average, 22.3% of aphids tested positive for BYDV. However, recent monitoring results suggest virus incidence may be running above this historic average. In autumn 2025, 34% of tested aphids carried BYDV, while analysis of samples processed so far in autumn 2026 indicates 35% are carrying the virus. Each year, the AHDB-backed programme tests more than 1,000 aphids for BYDV collected from…