19 August - Pests and irrigation

Leatherjackets - Pests are present in sand beds. Some will migrate into pots, causing similar damage to that of vine weevil larvae. Treat the sand with nematodes.

Irrigation - Automatic irrigation systems can have an uneven output so check crops along bed edges and pathways for drought. Keep different compost types and pot sizes separate as much as possible.

Acanthus - Control bacterial infections in crowns using Cuprokylt (EAMU 2015-1176) and Serenade ASO (EAMUs required).

Euphorbia - Avoid long periods of wet compost. Use Fenomenal, Subdue or Previcur Energy (EAMU 2011-1557) to control Phytophthora infections. Plant Trust contains slow-release fosetyl-aluminium. Prestop, T34 Biocontrol (EAMUs required) and Trianum P are biological alternatives for compost applications.

Conductivity meters - Take weekly readings of liquid feed stock solutions and composts to build up a picture of nutrient release of CRFs, using liquid feeding to maintain good levels of macro- and micro-nutrients. Take measurements at known water temperatures for consistency.

Heaters - Get heaters serviced now ready for use in late autumn.

Rodenticides - Always record bait quantity used and where it was placed, remember to collect and dispose of rodent bodies and never leave bait exposed to non-target organisms. Use CRRU code (www.thinkwildlife.org/crru-code).

Botrytis - Still an issue on changeable days with soft growth on protected crops. Vent as much as possible and treat using Octave, Rovral WG (EAMU 2011-3200), Switch or Serenade ASO (EAMUs required).

Plant passporting - Make sure documents are up to date. See www.gov.uk/guidance/ importing-trees-and-plants-to-england-and-wales-from-the-eu. Information on notifiable pests and diseases can be found at https://secure.fera.defra.gov.uk/phiw/riskRegister.

IPMP - Update your integrated pest management plan (IPMP) for this year to show that an IPM approach is being used for controlling pests, diseases and weeds. See www.voluntary.initiative.org.uk/vi-scheme/ipm-plans.

Phoma - Keep checking ceanothus, lavenders, viburnum and vinca for growing tip and stem dieback. Use Cercobin WG (EAMUs required), Octave, Serenade ASO (EAMUs required) or Switch.

Waste exemptions - Check exemptions are in place for using, disposing, treating and storing untreated waste plant material. See www.gov.uk/guidance/ register-your-waste-exemptions-environmental-permits.


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