21 April 2015 | Online since 2003



25 March 2014|Arable,Cereal,Crops,News

Light leaf spot risk remains high


Risk of light leaf spot risk is high according to the updated forecast from Rothamsted Research. The latest forecast takes into account winter rainfall from December 2013 – February 2014 and shows that risk remains high in all regions and has increased in the south due to heavy rain over winter.

“Growers may need to be particularly vigilant this spring,” explained Dr Neal Evans of Weather INovations (WIN) who put together the forecast. “I suspect the model is underestimating the amount of disease we are seeing. “Light leaf spot incidence on pods at harvest last year was low, although stem incidence at the time was moderate to high.”

Pod incidence is one of the key inputs for the forecast as a measure of disease carry over from one season to another. For future years, it may be possible to combine stem and pod incidence, to tweak the model. This and other aspects of light leaf spot are being looked into be Dr Evans and his colleagues as part of HGCA project RD-2013-3814 (Investigating components of the oilseed rape light leaf spot epidemic responsible for increased yield loss to the UK arable industry).

In addition to WIN and HGCA, the project involves scientists from SRUC, ADAS, Rothamsted Research and technical input from Bayer CropScience. Commenting on light leaf spot levels in the field this season, ADAS’s Dr Faye Ritchie said:

“We saw the first signs of the disease at a low level at the end of January. In some fields the disease remains at a low level but in other, perhaps less sheltered fields, the rain has certainly driven the epidemic along and we see patches of diseased plants where rain-splash has spread the disease from initial foci”.

Dr Jon West, Rothamsted Research added "We were quite surprised when we assessed our experimental field plots this past week. Some varieties had very little infection whilst others had severe infections and it’s the severity of the infection which has an impact on yield loss. Overall the level seems moderately high this season but there’s definitely a large varietal effect”.

Download




Comments


No comments posted yet. Be the first to post a comment

To post comment without approval login or register

Display name

Please enter your name

Email (optional)
Comment

Please enter your comment

Post Comment

Your comment submitted successfully.Please wait for admin approval.

Some error on your process.Please try one more time.



Jobs


20 April 2015
Store Sales Manager
Located in beautiful surroundings, with prestigious offices on a working dairy farm in Petersfield, Hampshire....

9 April 2015
Mulit Drop Package Car Driver
Lower Farm Road , Moulton Business Park , Moulton, Northampton . UPS PACKAGE CAR DRIVER 40 Hour Contract – JOB SUMMARY....

1 April 2015
Senior Dairy Cow Technical Feed Sales Executive – Cumbria
Probably a dairy cow enthusiast who will be fully conversant with ruminant formulations and feeding high yielding dairy cows....

17 April 2015
Resident in Small Animal Surgery
Job Ref: A-564506/JAC Leahurst, Wirral This clinical training post will be based in the Small Animal Teaching Hospital at Lea...

15 April 2015
Graduate Scheme : Marketing and Communications - Stoneleigh Park
Graduate, Trainee, Apprenticeship, Policy, Agriculture, Horticulture, Government, Farming, Food Chain, Rural, Public Sector, ...



Top stories you may have missed
10 April 2015 | Agri Safety

Final phase of Scotland's war on BVD

The permanent eradication of Bovine Viral Diarrhoea [BVD] in Scottish cattl...


10 April 2015 | Dairy

Dairy farmers competitiveness will be te...

The abolition of milk quotas in Europe on 1st April has resulted in a numbe...


10 April 2015 | Cattle

EU milk sector growth 'dependent on expo...

The top 14 milk producing countries in Europe will increase their productio...


10 April 2015 | News

Could the rural vote hold the key to the...

Matt Ware is the NFU's head of government and parliamentary affairs, based ...


10 April 2015 | Arable

Action needed to boost farmgate prices i...

There is a 'desperate need' to improve farmgate returns given low incomes a...


9 April 2015 | Arable

OSR damage risks early Sclerotinia infec...

Rapid stem extension, after a slow start to spring, is likely to create spl...


9 April 2015 | Finance

Time for a farm rent revolution?

The time has come for landlords to expect to see reductions in farm rents, ...


8 April 2015 | Cattle

Cogent strengthens reputation for high c...

Cogent’s reputation as a source of the highest calibre sires has been enhan...


8 April 2015 | Arable

Exotic plant fungus a 'serious threat to...

The spread of exotic and aggressive strains of a plant fungus is presenting...


7 April 2015 | Animal Health

Share information to tackle food fraud, ...

The FSA’s new Food Crime Unit wants the industry to share information, some...