Fungicide offers extra benefits

Asparagus growers who are using the fungicide Signum this season against rust, Botrytis and Stemphylium may find unexpected improvements in yield and quality over those likely to arise purely from controlling disease.

BASF agronomy manager Simon Townsend told the AGA conference that the two active ingredients of Signum - pyraclostrobin and boscalid - had been shown in trials to have physiological effects on the plants themselves.

Pyraclostrobin has been found to trigger the plant's own defence mechanisms against various pathogens the fungicide does not directly affect, while both active ingredients have been shown to inhibit ethylene production caused by stress.

Townsend said the effects had first been noticed with kresoxim-methyl, BASF's first strobilurin fungicide introduced a decade ago.

Signum is newly available for use on asparagus thanks to a SOLA issued in January.

ADAS plant pathologist Kim Green said there were three stobilurin fungicides available for Stemphylium but that resistance to other fungal species on other crops had been reported. "It is important to use them carefully to maintain their effectiveness," she said.

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

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.

Tractors for growers

Tractors for growers

The latest specialist tractors are providing wider choice for growers working in narrow rows, Sally Drury reports.

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