Contents tagged with leaf spot

Ramularia leaf spot management in barley

10 December 2024

Ramularia leaf spot management in barley

Ramularia leaf spot is one of the hardest diseases to manage in barley
AHDB forecast shows early onset of phoma in oilseed rape

1 October 2020

AHDB forecast shows early onset of phoma in oilseed rape

The predicted date for threshold breach varies widely across the UK
Phoma treatment thresholds reached for some oilseed rape crops

23 January 2026

Phoma treatment thresholds reached for some oilseed rape crops

Some OSR may already have 10% of the crop affected by phoma, according to the leaf spot forecast for the disease.
Phoma resistance in oilseed rape feels the heat

16 May 2019

Phoma resistance in oilseed rape feels the heat

How air temperature influences disease resistance to phoma in oilseed rape was investigated by this research.
Spotting ramularia in barley, subject of new video

20 February 2025

Spotting ramularia in barley, subject of new video

How ramularia leaf spot is assessed in Recommended Lists (RL) trials is the subject of a new video from AHDB.
Ramularia research results in suspended forecast service

20 November 2018

Ramularia research results in suspended forecast service

A project to extend a Scottish ramularia forecast service to the rest of the UK resulted in the cessation of the forecast completely.
Light leaf spot risk relatively low, says autumn forecast

23 January 2026

Light leaf spot risk relatively low, says autumn forecast

The autumn light leaf spot forecast shows that the disease risk to winter oilseed rape is relatively low.
Very early phoma onset forecast

12 October 2018

Very early phoma onset forecast

Watch out for phoma leaf spot in winter oilseed rape, as current risk could be higher than you think.

Phoma leaf spot and stem canker in oilseed rape

3 February 2025

Phoma leaf spot and stem canker in oilseed rape

Cankers can effectively strangle a plant, cutting off vital water and nutrient supplies
How to identify ramularia leaf spot symptoms in barley

26 January 2026

How to identify ramularia leaf spot symptoms in barley

Learn how to assess symptom severity for this difficult-to-diagnose disease

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