12 December - Sprays and soils

Spray programmes: Use the online UK Pesticide Guide (www.plantprotection.co.uk) or CSL Liaison to check resistance codes of products used to avoid unnecessary resistance issues next season.

Add bioactive products to your spray programme including AQ10 (EAMU 2012-1324), DiPel DF, Naturalis-L, Prestop (EAMU 2012-0564), Serenade ASO (EAMUs required) and T34 Biocontrol (EAMU 2012-1118). Where some trees have "edible" characteristics (fruit trees, herbs), consider putting together an "edible" spray programme for them for 2015 to eliminate residue risks.

Spraying Oil: Apply this product to dormant crops that suffered from mite, mealybug and scale insect attack this season. It is an extremely effective winter wash. Avoid applications before, during and after frost.

Soil sampling: The long growing season has meant lower than normal nutrient levels in fields.

Take soil samples on warm days (avoid sampling frozen land) and use the results to produce an accurate nutrient management plan, especially important for NVZs and Catchment Sensitive Farming. Test for plant parasitic nematodes (including potato cyst) and for the presence of Verticillium wilt (this is a six-week test) before taking on any new land.

Spraying: Avoid using systemic products now. Restrictions on the number of applications for many products means we do not want to waste them on dormant plants.

Winter weed control: Products including Flexidor 125 and Butisan S can be applied in the dormant season. For bittercress, willowherb, pearlwort and mouse-ear chickweed, use Chikara, Devrinol, products containing pendimethalin, Shark (EAMU 2008-0552), Sumimax (EAMU 2008-2881) or Venzar Flowable. Bullet XL and Roundup will control pearlwort. Chikara and Sumimax work well on groundsel. Check crop tolerance by looking through HDC projects HNS 111, 132, 139a, 155, 166 and 175. Some products will have restrictions on what can be safely planted as a following crop.

Botrytis: Check protected crops, crops that are pot-thick and evergreens. Open tunnel and glasshouse doors and vents as often as possible to encourage airflow. Should irrigation be needed, apply in the morning so that foliage has time to dry off during the daytime. Allowing leaf surfaces to dry once every 24 hours significantly reduces the risk of infection.

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

Business planning - Managing price volatility

Business planning - Managing price volatility

There are options to help you manage the impact of exchange rate fluctuations when buying from abroad, Neville Stein advises.



The range of colours and flowering times makes for cheerful and economic displays, Miranda Kimberley reports.

Pitches - seeds and consumables

Pitches - seeds and consumables

The right seeding and inputs are essential for keeping grass in top condition and ensuring that pitches look and perform at their best, says Sally Drury.

Opinion... Standardisation good for the trade

Opinion... Standardisation good for the trade

Horticulture could benefit from streamlining in the supply chain.

Opinion... Get rid of plastics in Horticulture

Opinion... Get rid of plastics in Horticulture

Blue Planet II eloquently showed the rich tapestry of life in the oceans. It also focused public awareness on plastic pollution damaging wildlife.

Opinion... Gardening needs better promotion

Opinion... Gardening needs better promotion

British horticultural firms and organisations have not been the best at working together to promote our industry.

Follow us on:
  • Facebook
  • LinkedIn
  • Twitter
  • Google +
Horticulture Jobs
More Horticulture Jobs

Horticulture Week Top 60 Ornamentals nurseries

See our exclusive ranking of ornamentals nurseries by annual turnover. 

Tim Edwards

Boningales Nursery chairman Tim Edwards on the business of ornamentals production

Read Tim Edwards

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

Are you a landscape supplier?

Horticulture Week Landscape Project Leads

If so, you should be receiving our new service for Horticulture Week subscribers delivering landscape project leads from live, approved, planning applications across the UK.

Peter Seabrook

Inspiration and insight from travels around the horticultural world

Read more Peter Seabrook articles