Fungicide authorised for leek and salad onion growers

The Chemicals Regulation Directorate (CRD) has issued an EAMU (extension of authorisation for minor use) permitting use of Bayer's fungicide Infinito (fluopicolide + propamocarb) on an extended range of allium crops.

Image: www.bayercropscience.co.uk
Image: www.bayercropscience.co.uk

The previous EAMU was solely for the use of Infinito to control downy mildew on bulb onion, but this has now been extended to use on salad onion, shallot, garlic and leek, and for the control of white tip in leek.

AB Agronomy's Andy Richardson says Infinito has proved useful in bulb onion programmes alongside Unicur (fluoxastrobin + prothioconazole).

"Growers struggle with white tip in leeks and last winter it was unusually severe in bulb onions too due to the exceptionally mild and wet conditions," he said.

"Prior to this EAMU leek growers only had two products available, so adding Infinito to their armoury is a big help. For salad onion growers it's very exciting as downy mildew options have previously been very limited. It's a frustration though that the new EAMU only allows one application per crop."

The authorisation specifies a maximum individual dose of 1.6L/ha with the latest time of application depending on the crop: seven days before harvest for bulb onion, garlic and shallot and 14 days before harvest for leek and salad. It should be applied using conventional hydraulic spray equipment in a minimum water volume of 200L of water per hectare.

Two conditions of use to note that may have rotational implications are that to protect groundwater, Infinito or any other fungicide containing fluopicolide must not be applied at a rate of more than 400g/ha in any three-year period, and a maximum of one application per year to the same area of land must not be exceeded.


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