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December 2017 Update

• 38 Oilseed rape leaf samples received in December 2017
• 12 samples have tested positive for signs of light leaf spot as early sporulation
• We have started to see some obvious lesions now in a few of the Scottish samples [image above]

The map below shows where LLS has been picked up.

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Summary from October to December 2017

218 Oilseed rape leaf samples assessed up to the end of December 2017
44 samples have tested positive for signs of light leaf spot as early sporulation
135 samples have tested positive for phoma

First signs of light leaf spot (after incubation) seen regionally:

East of England on 11th to 19th October
Scottish Borders on 19th October
West of England 10th to 15th November
The Midlands 17th to 28th November
North of England (South Yorkshire) on 23rd November

Oilseed Rape in East of England typically drilled 1 week earlier (16th August to 4th September) than in West and North of England (24th August to 7th September).

First signs of light leaf spot seen in non-incubated samples on:
15th November in Ceredigion and on 5th December in Herefordshire

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Would you like to check your OSR leaves for LLS?

Well you can for free thanks to SpotCheck, a collaboration between Bayer and ADAS with extensive support from the Association of Independent Crop Consultants (AICC). ADAS will be undertaking leaf assessments sent in by growers to make a conclusive diagnosis on what is a very difficult disease to identify.

SpotCheck - Bayer Crop Science
Find out more

Oilseed rape agronomy advice

For the latest advice and news for your oilseed rape crop

Click here

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