If the virus appears in the courgette plants:

• there is no cure or treatment
• it is spread by aphids & by knives cutting the courgettes off the vines
• virus resistant varieties can be grown (e.g. Defender, Primula, Supremo, Tarmino, Zucchino).
  

  mildew-resistant-courgette

The two most important diseases of courgettes are the mosaic virus and powdery mildew.

If the virus appears in the courgette plants there is no cure or treatment it is spread by aphids & by knives cutting the courgettes off the vines Virus resistant varieties can be grown (e.g. Supremo, Tarmino, Zucchino, Defender).

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Greenhouse tomatoes are suffering from virus diseases this year.

*The four most common virus diseases affecting tomatoes are:

    * Tomato Mosaic Virus (TMV)
    * Cucumber Mosaic Virus (CMV)
    * Tomato Spotted Wilt Virus (TSWV)
    * Pepino Mosaic (PM)

*Symptoms on leaves:

    * light green or yellowish mosaic patches – caused by TMV or CMV
    * poorly formed leaf blades, with prominent midribs, resembling
      ferns – CMV
    * leaves have long, brown streaks which shrivel – TMV
    * young leaves curl downwards, turn bronze, & plant stops growing – TSWV
    * leaves have a bubbly, mosaic surface, and plant growth is stunted

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