TopVeg – growing veg,fruit&herbs

June 5, 2007

Tomato Virus Diseases

Filed under: pests&diseases — Tags: , — TopVeg @ 9:18 pm

 Tomato Virus Diseases
 

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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