Science Into Practice - Testing for viroid infection in tomato seeds
10 Feb 2012
Columnea latent viroid (CLVd) is one of nine viroids known to affect tomatoes.
Plane anthracnose: Hard-to-see brown patches can start to develop underneath leaf buds.
Columnea latent viroid (CLVd) is one of nine viroids known to affect tomatoes.
Tobacco whitefly (Bemisia tabaci) is a pest of global economic importance on many crops. In the UK, it is a notifiable pest subject to a policy of eradication if found on propagators' premises and plants moving in trade.
Fosetyl-aluminium: Stock up on products containing this active ingredient, for example Aliette 80WG or Standon Fullstop, before the sales date ends on 31 October. Manufacturers still have good supplies available. Growers can use these products until the final revocation date of 31 October 2012.
Apple scab can cause serious losses, particularly in seasons when weather conditions favour it and limit opportunities to spray. Damaged fruit is unmarketable and so effective control of the disease is vital.
Pyrethrum is an effective insecticide with low toxicity to humans, but it is rapidly destroyed by ultraviolet light.
Bark beetles: These pests will emerge as the weather starts to warm up. Spray the stems of pines and ornamental Prunus with Equity.
Tuta absoluta, an increasingly important pest of tomato crops in southern Europe, is extremely damaging and currently controlled by intensive chemical pesticide applications. But such products would not be compatible with biological control agents.
Background During November 2010, Acacia sp., Banisteriopsis caapi and Brugmansia sp. plants imported by courier from the USA, were inspected by the Plant Health and Seeds Inspectorate (PHSI) and found to be infested with whiteflies. Samples were submitted to The Food and Environment Research...
Pesticide resistance: Reduce pest and disease resistance by rotating pesticide groups in control programmes. The British Crop Production Council UK Pesticide Guide (book or online) lists the product group under the active ingredient name. Check your aphid, spider mite, whitefly, Botrytis, Septoria and...



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