Mosaic Disease in Plants: Causes, Symptoms & Management

Mosaic disease is caused by various viruses, producing mottled yellow/pale green leaf patterns in a mosaic arrangement. It can stunt growth, reduce yields, and kill plants.

Symptoms

• Mottled leaves (yellow, pale green, white)
• Leaf distortion (curling, cupping, stunting)
• Reduced yields from stunting and premature leaf drop
• Plant death (especially young/stressed plants)

Common Viruses

• Cucumber mosaic virus (CMV) – wide host range
• Tobacco mosaic virus (TMV) – infects tobacco, tomatoes, peppers
• Alfalfa mosaic virus (AMV) – mainly legumes
• Wheat streak mosaic virus (WSMV) – cereal crops

Prevention (No Cure)

• Use disease-free seeds/plants.
• Wash hands before handling plants.
• Avoid working with diseased plants.
• Remove infected plants immediately.
• Control aphids and other viral vectors.
• Water at base to keep leaves dry.
• Maintain garden cleanliness.

Symptom Management

• Fertilize regularly to reduce stress.
• Water adequately for heat/drought tolerance.
• Remove infected leaves to slow spread.