Damp weather spells trouble for brassicas

Brassica and lettuce growers can expect a high risk of wet-weather diseases this season, according to specialist agronomist John McCulloch. He said he has seen more incidents of Sclerotinia this year than ever before.

McCulloch has witnessed high levels of the disease on a range of crops alongside other wet-weather diseases including ring spot, white blister and Botrytis. Although controls are available, McCulloch is concerned about controlling these diseases adequately without increasing resistance risk.

With continuing wet, warm and humid conditions expected, the County Crops agronomist said growers should adopt an appropriate fungicide regime with resistance and crop safety as priorities.

He suggests starting programmes early with a fungicide such as Signum from BASF, which can be mixed with a triazole to be followed by other products with different modes of action to reduce resistance. He said: "Signum gives an excellent start to the programme, being active against all the key lettuce diseases including Sclerotinia, Botrytis and mildew.

"It is usually followed by a metalaxyl-containing fungicide and then Invader - it is important to minimise any resistance pressure on any one fungicide group."

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

Is a post-Brexit seasonal worker scheme now impossible?

Is a post-Brexit seasonal worker scheme now impossible?

The UK fresh-produce sector has reacted with dismay at the latest developments in the ongoing debate, largely conducted out of public view, on whether UK horticulture will still have access to seasonal migrant workers when the UK leaves the EU in 18 months' time.

Can UK fresh produce come out of Brexit ahead?

Can UK fresh produce come out of Brexit ahead?

UK production horticulture can become more profitable under one possible Brexit scenario, while other more drastic scenarios will lead to only minor losses in profitability, a new report argues.

Business Planning - Staff are your greatest asset

Business Planning - Staff are your greatest asset

An effective strategy to retain staff is the best way for any business to avoid a potential recruitment crisis, Neville Stein advises.

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