# BYDV alert as one in three aphids test positive this autumn - FarmingUK News

> Preliminary AHDB figures show 35% of aphids tested in autumn 2026 carry barley yellow dwarf virus, up from a 2020-24 average of 22.3% but nearly unchanged from 34% in autumn 2025. AHDB stressed that this measures virus prevalence in aphids, not the share of cereal crops infected.

- Date: 2026-11-02 · published 2026-11-02T09:06:29.755Z
- Category: disease · region UK · magnitude low
- Page: https://feedsoft.ai/events/75201-bydv-alert-as-one-in-three-aphids-test-positive-this-autumn-farminguk-news
- Commodities: [Wheat (SRW)](https://feedsoft.ai/c/WHEAT.md), [Barley](https://feedsoft.ai/c/BARLEY.md)

## Why it matters

Elevated virus pressure could cut UK wheat and barley yields if infections occur early, though the impact on global prices is limited since the figures do not show actual crop infection rates.

## Read by commodity

- WHEAT: neutral
- BARLEY: neutral

## Sources

- farminguk.com: https://www.farminguk.com/news/bydv-alert-as-one-in-three-aphids-test-positive-this-autumn_69396.html

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.