From the nursery

Escallonia - A reminder for the final application of a magnesium chelate at the rate of 1:200 as an overhead spray with Librel Liquid Mg or Vytel Liquid Magnesium. This can be added to most pesticide sprays as a tank mix. As with all chelate sprays, make sure the weather is cool when you spray the foliage.

Downy mildew - Maintain the control of downy mildew with sprays of Aliette 80 WG, Fubol Gold WG, Filex, Proplant or Subdue. Weather conditions are everything with this disease and trying to dry off the leaf surface once every 24 hours makes all the difference to your control programme.

Spraying windows - With constant showers, spraying can often be difficult. Consider adding products like Celect, which can improve the rain-fast nature of products.

Feeding - Some of the sales this season have not cleared out as many crops as we expected and I have seen a lot more plants being kept in nurseries for longer than planned. The result of this is that the nutrient supplies in the compost may not carry the plants through to the autumn or even next year, especially if a short-term product was used. Check the nutrient status of vulnerable crops and top-dress with Sincron, if required, to maintain plant freshness through the autumn. If you intend to keep plants for next spring then make sure they have CRF plugs added and an appropriate liquid feeding programme in place. Older plants can often be the most neglected in the nursery and become breeding grounds for many weeds, pests and diseases.

Vine weevil - Plants that did not have any vine weevil control in the growing media at the beginning of the season will need a drench in September with Intercept 70 WG or nematodes. Egg-laying will occur at any time now and the larvae start developing around six weeks after that.

Apple scab - Wet weather encourages scab on susceptible species. If you have maintained a routine "top up", continuing that now will keep it at bay. If not, do a full scab spray of both eradicant and preventative products like Dithianon Flowable or Radspor FL. Both these give good eradication of active scab. Remember to include Chaenomeles and Pyracantha in the routine spray as they are susceptible too.

John Adlam is managing director of Dove Associates


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 is being done to develop biocontrols against orchard pests?

What is being done to develop biocontrols against orchard pests?

The SIVAL horticultural trade show in Angers, France, this week (16-18 January) heard about several initiatives to promote more environmentally sustainable orchard growing.

What does the 25-year plan mean for growers?

What does the 25-year plan mean for growers?

Published on 11 January, the Government's long-awaited 'A Green Future: Our 25 Year Plan to Improve the Environment' brings together a number of policy strands into a single framework that will impact many sectors, not least fresh produce, over the coming decades.

What will 'embracing change' mean for horticulture?

What will 'embracing change' mean for horticulture?

At the Oxford Farming Conference, whose theme was "embracing change", Defra secretary Michael Gove expanded on what a post-Brexit UK agriculture and land-use policy will look like and how it will impact farmers and growers.


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