From the nursery

Horse chestnut leaf miner: Many horse chestnuts are infested with leaf miner at the moment. If you have specimen trees to protect there is a specific off-label approval (SOLA 0298/2008) that details the use of Admire as a systemic control applied as a drench.

Windbreaks: If living windbreaks are trimmed during October make sure that the trimmings are removed and burned as they can be a source of both pest and disease to the crops beside them.

Botrytis: Make sure the ventilation fans are all running now in tunnels and glasshouses; this is one of the most important times for them to be fully operational. Open the doors of polythene tunnels on all the days when the wind and temperature allow. This will reduce the incidence of Botrytis and ensure adequate air changes within a closed tunnel. Applications of Frupica SC, Rovral WP or Amistar need to have adequate wetting agent added to get good penetration. Note that Rovral WP loses approval in December 2008.

Leatherjackets: Craneflies' eggs are now hatching. The resultant leatherjackets often cause damage to outdoor conifer and shrub liners. Drench with chlorpyrifos, Admire or Intercept 70 WG.

Mites: Now is the time to apply Apollo 50 SC to outdoor crops of trees and shrubs with known red spider mite problems. This will reduce the over-wintering egg population. Include Aster and Picea glauca var. albertiana 'Conica' in the programme. On warm days it is possible to see rust mites on ash and Malus buds as they scurry about. Spray with Gyro/Talstar, chlorpyrifos or Sequel to reduce the over-wintering population.

Phoma: This common fungus is still quite active on a range of nursery stock subjects. It is most commonly identified as a blackening of the stems part way down a shoot and the wilting of that shoot to the tip. It is controlled effectively by Amistar, Twist, Scotts Octave and Bravo 500. With growth now slowing down it is important, on susceptible species such as Ceanothus and Viburnum, to apply before winter dormancy.

Weed control: This is the best time to be applying Roundup to perennial weeds. As the plant dies down for the winter the glyphosate is taken into the plant; it continues to remain at a low level of activity all winter and suppresses re-growth next season, giving you a head start on the weeds. With patches of mare's tail, Challenge seems to be consistently the best control product for rapid knockdown.


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

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, in contrast to other farming sectors, according to a new report by levy body AHDB with Agra CEAS Consulting.

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.

How should agri-tech research for fresh produce function in a post-Brexit UK?

How should agri-tech research for fresh produce function in a post-Brexit UK?

One area affected by the uncertainty around Brexit will be the ongoing development of agricultural technology, seen by many as essential to retain Britain's productivity and competitiveness in fresh produce along with other farming sectors.


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