Citrus

Citrus Yellow Mosaic Virus

CiYMV

Virus

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In a Nutshell

  • Yellow patterns on leaves.
  • Abnormal surface and colour on fruits.

Can also be found in

1 Crops
Citrus

Citrus

Symptoms

Symptoms start as small yellow spots on new leaves, which later become larger and form bright yellow patterns along the veins. Mature leaves have a leathery texture and younger leaves remain small. Fruits show yellow patches and raised green areas. Tree growth and fruit production are affected.

Recommendations

Organic Control

Organic control is not possible for this issue.

Chemical Control

Chemical control for the vector is not enough for controlling the virus. Always ensure virus-free budwood.

What caused it?

Citrus yellow mosaic virus (CYMV) was first found in India and is now common in Andhra Pradesh, India, where citrus is grown on a large scale. This disease can spread through contaminated budwood and many commercial nurseries have reported cases of this disease. The virus can also be transmitted by the citrus mealybug and through contamincated tools. The virus can spread from one tree to the other with dodder, which is a common weed.

Preventive Measures

  • Use only virus-free, certified budwood for propagation.
  • Citrus mealybug (Planococcus citri) has been identified as the virus vector, so control of this pest is also helpful.
  • Clean the field from weeds and especially dodder.
  • Always clean your tools between uses in different trees.
  • Breeding for resistance is not yet available and there is still need to develop a sensitive diagnostic tool for early detection.

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