3 March - Aphids emerging

Aphids: These are emerging now on some protected crops. Use contact-acting products including Decis (non-IPM, EAMU 2014-1011), Hallmark WZT (non-IPM, EAMU 2008-2944), Majestik, Pyrethrum 5EC, Savona or SB Plant Invigorator.

Fogging: Cold fogging pesticides in protected structures gets a product into a crop without leaving excessive water on foliage.

Adelgids: Check Abies, Picea, Pinus, Pseudotsuga, Juniperus and Larix for the typical white fluffy deposits exuded from pests' bodies. The pineapple galls that develop later on contain young nymphs so control is important now to keep plants clean. Apply Decis or Hallmark WZT (EAMU 2008-2944) plus a wetting agent (depending on product formulation and instructions) to penetrate the "wax". Sooty moulds that can grow on the honeydew can be controlled using Rovral WG (EAMU 2011-3200), Octave or Switch.

Vine weevil: Check containers for larvae and apply nematodes if soil and compost temperatures are at or above 5 degsC.

Oaks: Apply Gazelle SG or Vydate 10G (EAMUs required) in the next few weeks to help prevent oak tip midge damage on central buds on young field-grown oaks.

Dianthus: Apply a directed spray of Octave, Prestop (EAMUs required), Serenade ASO (EAMUs required) or Switch to control Fusarium spores on the crowns of newly potted crops. Sciarid larvae can spread this disease so control using Atheta, Hypoaspis, Macrocheles or Steinernema feltiae nematodes.

Predators: Start predator introductions now for whitefly, aphids, mites and thrips in protected frost-free structures.

Field weeds: Leave a week's interval after preparing land for planting to encourage weed seedlings to emerge and then burn them off with a contact herbicide including Reglone, Shark (EAMUs required) or selected products containing glufosinate-ammonium a few days before planting. This will help to improve the effectiveness of subsequently applied residual herbicides.

Plane anthracnose: Apply preventive fungicides such as Bravo 500 (EAMU 2011-1130) or Dithane 945 (EAMUs required) to outdoor crops. Check for small brown patches that develop underneath leaf buds in the next few weeks. Prevent infection spreading into leaves and causing leaf-drop by applying a systemic fungicide in early summer.

Slugs: Choose products containing ferric phosphate. Read the best practice information available online at www.getpelletwise.co.uk if you are using products containing metaldehyde.

HorticultureWeek.co.uk/nursery


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

Business planning - The learning organisation

Business planning - The learning organisation

Learning, development and improvement are crucial in the uncertain business climate caused by Brexit, says Neville Stein.

Cytisus

Cytisus

These shrubs have stunning pea-like flowers, good scent and an undeserved reputation, Miranda Kimberley explains.

Glasshouse structures

Glasshouse structures

Higher crop prices and increasing demand for food are driving the latest advances, but what does the future hold for growers? Sally Drury investigates.


Seabrook On... Sensible pricing levels

Seabrook On... Sensible pricing levels

One of the big retail chains has flower seeds on sale at 25p a packet, while one of the specialist mail-order companies has six nigella plants on offer at £15 plus £4.95 carriage charges.

Production stars take innovation lead at UK Grower Awards and Garden Retail Awards

Production stars take innovation lead at UK Grower Awards and Garden Retail Awards

Over the past week it has been the great privilege of the Horticulture Week team to welcome more than 700 leading horticulture professionals to three great industry events - the Garden Retail Awards 2017, the UK Grower Awards 2017 and the third Garden Retail Summit, all hosted by Horticulture Week.

UK Grower Awards winners demonstrate exceptional talent

UK Grower Awards winners demonstrate exceptional talent

Welcome to this special presentation of the achievements of the outstanding winners of the UK Grower Awards 2017.


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

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.