Adaptation and organic lesson hold key to fighting canker

Canker (Nectria) has become such a problem that growers need to adapt their orchard-management programmes to better tackle the disease - and to learn from the organic experience, the EMRA/HDC tree fruit day heard.

"Canker is one of the biggest issues in apple and pear growing today," Agrovista fruit specialist Paul Bennett told delegates. "Not a day goes by when there isn't another orchard that's been destroyed by it."

He added: "We need to think of canker as having an infection period similar to that of the primary scab season, but it (canker) goes on for 12 months."

The ideal infection conditions, he said, are when there is a wound on the tree, when spores are present, when the temperature is between 0 degsC and 16 degsC and when the leaf has been wet for six hours.

"Looking at our weather you have potential infection conditions throughout the year." But he pointed out that canker is much less of a problem in organic orchards, where low doses of copper are traditionally applied as a scab treatment.

Foliar feed product 42PHI Cu has been used in the USA for several years, where it has reduced the level of canker infections and old infections, Bennett explained.

The product, which contains about five per cent copper, is now available in the UK and it could stimulate plants' natural defences in conventional orchards.

"We are starting to use this product more and more and by next season we will start to report back on how successful it has been," said Bennett.


Have you registered with us yet?

Register now to enjoy more articles and free email bulletins

Sign up now
Already registered?
Sign in

Read These Next

Does the future of urban farming lie in meeting wider sustainability goals?

Does the future of urban farming lie in meeting wider sustainability goals?

Labour crisis update: How bad has the shortage been this season?

Labour crisis update: How bad has the shortage been this season?

Grower sundries - Growing media for edibles

Grower sundries - Growing media for edibles

Better control, efficiency and productivity are among the benefits offered by the latest products, Gavin McEwan discovers.


Follow us on:
  • Facebook
  • LinkedIn
  • Twitter
  • Google +

HORTICULTURE WEEK BUSINESS Awards 2019

The Horticulture Week Business Awards is now open for entries

Horticulture Week Top UK FRUIT PRODUCERS

See our exclusive RANKING of UK Fruit Producers by annual turnover plus the FULL REPORT AND ANALYSIS.

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