6 July - Aphid defence

Aphids - Products that can be used as a foliar spray with a short-term effect on predators include Aphox, Chess WG, Eradicoat, Majestik, Naturalis-L, Pyrethrum 5EC, Savona, SB Plant Invigorator and Spruzit. Focus sprays, avoiding bright warm weather, on Fagus, privet, prunus, philadelphus and viburnum and any other crops showing new foliage. Non-IPM sprays include Calypso (EoAs required), Decis, Dursban WG, Gazelle SG, Hallmark WZT (EoA 2008-2944) and Toppel 100EC.

Disease watch - Warm, humid weather increases the risk of box blight, downy mildew and scab. For box blight, control with routine applications of Octave, Signum (EoA 2009-1842) or Switch. For scab, continue your routine programme using an eradicant followed by a protectant on Chaenomeles, Crataegus, Malus, pieris, pyracantha, Pyrus and sorbus. Downy mildew can be controlled with a wide range of products including Aliette 80WG, Amistar (EoA 2009-0443), Fubol Gold WG (EoA 2012-0217), Invader (EoA 2012-0109), Paraat (EoA 2011-2585), Previcur Energy (EoAs required), Revus (EoA 2008-2867), Signum (EoA 2009-1842), Standon Fullstop or Valbon (EoAs required).

New products - T34 Biocontrol based on a specific strain of Trichoderma can provide preventive and curative control of Fusarium infections on dianthus and carnations. An EoA is available for ornamental plant production under code 2012-1118. Research shows that it also has activity against Pythium, Rhizoctonia and Sclerotinia.

Soil sterilisation - The soil is warm enough for Basamid. Covering of treated soil with polythene is not essential but will improve control and keep areas weed-free until planting preparations need to be carried out.

Pine shoot moth - Look for gumming around buds and stunted leader growth on pines. Small yellow/brown larva of the pine shoot moth can be found sitting inside buds in the hollow stem.

Spray - Decis, Dursban WG or Toppel 100EC using high water rates and a wetting agent.

Wilt diseases - Plants of aster, dianthus, hebe, penstemon and phlox can all suffer wilt diseases at this time of year. Spray affected plants with Amistar (EoA 2009-0443), Octave, Signum (EoA 2009-1842), Switch or T34 Biocontrol (on-label or EoA 2012-1118) to control the spread of either Fusarium or Verticillium wilts.


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

How will the fresh-produce growing season pan out with less labour?

How will the fresh-produce growing season pan out with less labour?

The new fresh-produce season is around the corner and Brexit just over a year away, yet the Government has still given no indication that it will enable seasonal workers to come to the UK in the volumes the sector requires, either in this season or any other.

What recent developments can help growers fight orchard pests and diseases?

What recent developments can help growers fight orchard pests and diseases?

Last week's British Independent Fruit Growers Association Technical Day (31 January), heard about the latest research in orchard pests and diseases and how to deal with them.

Is a move away from plastic produce packaging now inevitable?

Is a move away from plastic produce packaging now inevitable?

A tipping point has been reached in the attitude of retailers and the Government to waste plastic which is likely to affect suppliers' future packaging options.