Alert: downy mildew and powdery mildew infections

Read on for the latest Pest & Disease Tracker Alert.

Alert date: June 17

The risk of downy mildew and powdery mildew infections is still high.

Hyperparasitism can interrupt biological control programmes significantly at this time of the year. Look out for irregularly torn exit holes on the parasitised aphid bodies.

  • For information on identification, symptoms, prevention and management of downy mildew in ornamental crops,  see HW's downy mildew Factsheet.
  • For information on identification, symptoms, prevention and management of powdery mildew in ornamental crops,  see HW's Powdery Mildew Factsheet

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