Experts highlight need for updated fungicides

New fungicides to control basal rot of narcissus are needed to reduce the likelihood of resistance developing, according to experts.

Consultant Gordon Hanks told growers at the Horticultural Development Company (HDC) and British Daffodil Growers Association narcissus technical seminar that thiabendazole (Storite or Tezate) and chlorothalonil (Bravo) are the only fungicides approved for bulb dips. The industry is relying on too few active ingredients, especially with the high frequency of pesticide losses.

John Clarkson of Warwick Crop Centre spoke about research project BOF 74, screening in vitro fungicides with the potential to control basal rot, while East Malling researcher Ralph Noble told the seminar about controlling Fusarium basal rot with biological treatments.

Royal Dutch Flower Bulb Growers Association plant protection products policy adviser Paul Venderbosch gave an update on current bulb dipping procedures in the Netherlands.

ADAS consultant Erika Wedgewood spoke about HDC project BOF 72 on fungicides for improved control of white mould and smoulder while breeder Brian Duncan gave a talk on breeding desirable attributes into commercial narcissus varieties. Other topics covered included alternative herbicides and insecticides for the control of large narcissus fly.

Have you registered with us yet?

Register now to enjoy more articles and free email bulletins

Sign up now
Already registered?
Sign in

Before commenting please read our rules for commenting on articles.

If you see a comment you find offensive, you can flag it as inappropriate. In the top right-hand corner of an individual comment, you will see 'flag as inappropriate'. Clicking this prompts us to review the comment. For further information see our rules for commenting on articles.

comments powered by Disqus

Read These Next

Pest & Disease Factsheet - Peach leaf curl

Pest & Disease Factsheet - Peach leaf curl

Growers of fruit and ornamental trees need to be aware of this disfiguring disease.

Business planning - Demand management

Business planning - Demand management

Seasonal demand may be inevitable but peaks and troughs can be managed to minimise business impact, Neville Stein explains.



These heralds of spring are highly suited to being planted in tree circles, grass and rock gardens, says Miranda Kimberley.

Opinion... Get rid of plastics in Horticulture

Opinion... Get rid of plastics in Horticulture

Blue Planet II eloquently showed the rich tapestry of life in the oceans. It also focused public awareness on plastic pollution damaging wildlife.

Opinion... Gardening needs better promotion

Opinion... Gardening needs better promotion

British horticultural firms and organisations have not been the best at working together to promote our industry.

Opinion... A wish list for unblinkered thinking among our politicians

Opinion... A wish list for unblinkered thinking among our politicians

Follow us on:
  • Facebook
  • LinkedIn
  • Twitter
  • Google +
Horticulture Jobs
More Horticulture Jobs

Horticulture Week Top 60 Ornamentals nurseries

See our exclusive ranking of ornamentals nurseries by annual turnover. 

Tim Edwards

Boningales Nursery chairman Tim Edwards on the business of ornamentals production

Read Tim Edwards

Pest & Disease Tracker bulletin 

The latest pest and disease alerts, how to treat them, plus EAMU updates, sent direct to your inbox.

Sign up here

Are you a landscape supplier?

Horticulture Week Landscape Project Leads

If so, you should be receiving our new service for Horticulture Week subscribers delivering landscape project leads from live, approved, planning applications across the UK.

Peter Seabrook

Inspiration and insight from travels around the horticultural world

Read more Peter Seabrook articles