Science Into Practice - Improving the efficiency of fungicides

Fungicides are vital for controlling leaf spots on brassicas. If fungicides are timed right, efficacy can be enhanced and the need for re-application reduced. However, optimal timing relies on accurate monitoring or prediction systems that identify when the damaging or vulnerable pathogen life cycle stages occur.

Well established models use environmental conditions and weather data to improve fungicide performance, but these have not been fully integrated with the activity of different active ingredients.

HDC project FV 313 looked at the effect of application time post-infection in combination with dosage and product type on the effectiveness of fungicide applications against dark leaf spot, ring spot and white blister. It enabled growers to reach more informed decisions on sprays.

Further information on the efficacy of protectant and eradicant fungicides could be added to the Brassicaspot forecasting system. This could then be referred to by users when crop protection inputs were required.

The results found that growers using the Brassicaspot infection models have up to seven days to apply either Plover or Folicur and still maintain effective disease control. The application interval of Generic Folicur is much longer (approximately 14 days), especially at mean temperatures of 5-10 degsC.

Dates for your diary

24 January HDC Parsnip Variety Trials Open Day, PGRO, Peterborough.

24 January HDC Optimising Pest & Disease Control Day, Chichester.

26 January HDC Optimising Pest & Disease Control Day, Beverley.

Horticultural Development Company

For details on all HDC activity, visit www.hdc.org.uk


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

What challenges and opportunities lie in store for tomato growers?

What challenges and opportunities lie in store for tomato growers?

The British Tomato Growers Association (TGA) conference today (21 September) heard a range of perspectives on what changes lie in store for the sector and how to anticipate them.

Buoyant demand for UK apples but frost and labour remain concerns

Buoyant demand for UK apples but frost and labour remain concerns

As the British apple season begins, English Apples & Pears (EAP) is warning that growers will feel the effects of both a late frost in spring and also constrained labour supply.

Tomorrow's tractors

Tomorrow's tractors

These machines have advanced rapidly over recent years but what does the future hold? Sally Drury looks ahead.


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

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

Professor Geoffrey Dixon

GreenGene International chair Geoff Dixon on the business of fresh produce production
 

Read Professor Geoffrey Dixon