Pacific Pests, Pathogens & Weeds - Mini Fact Sheet Edition

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Bean common mosaic (043)

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Photo 1. Long bean infected by Bean common mosaic virus showing distorted leaves with light and dark green patches.

Photo 2. Infection of long bean leaf by Bean common mosaic mostly along the veins.

Photo 3. Old leaf of long bean showing yellow and green patches (called a mosaic) from infection by Bean common mosaic virus.

Photo 4. Mosaic symptoms typical of infection by Bean common mosaic virus in yard long bean.

Summary

• Worldwide distribution. Pasture and food legumes, e.g., yard long and French bean, and weeds, e.g., wild passion fruit. Important disease that lowers pod yields.
• Plants stunted, leaves distorted with light and dark green patches. Spread by aphids, seed (>30%) and, less importantly, in pollen.
• Cultural control: select healthy plants for seed; do not plant new crops next to old; interplant food legumes with maize; resistant varieties (in Africa mixtures of e.g., yard long bean varieties planted together); collect and burn trash after harvest.
• Chemical control: not a method for aphid control.

Common Name

Bean common mosaic virus, common mosaic of beans.

Scientific Name

Bean common mosaic virus

This mini fact sheet is a part of the app Pacific Pests, Pathogens & Weeds

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