Science into practice: residue-free raspberries

Residue-free raspberries are on the horizon thanks to latest technologies and methods of controlling each of the main pests and diseases. The new research has been funded by a LINK project of which HDC is a partner.

SF 74 is due to finish in 2011 but grower trials are already demonstrating promising results. Raspberries are very susceptible to Botrytis, powdery mildew, raspberry beetle, cane midge, aphids and the viruses they spread. Intensive use of pesticides to control these problems is undesirable and unsustainable. The first three years of the project have worked on an integrated pest and disease management (IPDM) programme now being tested in large-scale trials. In 2009, the IPDM programme gave the same yield as growers' standard regime.

Cane density has a critical influence on the risk of cane Botrytis - an open canopy structure should be maintained by thinning. Prompt removal of spent floricane after harvest in August is also important for good crop hygiene, which combined with rapid fruit cooling and high-quality cool chain marketing can avoid the need for Botrytis fungicide sprays.

Powdery mildew fungicide should be applied in spring as soon as the tunnel is covered. If the disease is seen later, potassium bicarbonate sprays can eradicate.

Raspberry beetle is monitored by a new design of funnel trap, baited by a lure available from Agrisense. Catches inform decision making on timing or need for sprays of Calypso at the start of flowering. Sex pheromone traps inform whether raspberry cane midge needs to be treated. Applications of aphicide in October reduce spring populations of large raspberry aphid by more than 90 per cent.

Horticultural Development Company

For details on all HDC activities, 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

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