Pacific Pests, Pathogens and Weeds - Online edition

Pacific Pests, Pathogens, Weeds & Pesticides

Cucumber green mottle mosaic (422)

Click/tap on images to enlarge
  • Worldwide. Asia, Africa (restricted), North and South America, Europe, Oceania. In Australia.
  • A serious disease causing yield and quality losses in cucumber and watermelon. Also in bitter and bottle gourds, melon, and wild species in amaranth, cucumber, potato and other families.
  • Symptoms:
    • cucumber – leaf crumpling, green mottling and mosaic patterns, irregular light green spots or streaks on fruits; plants may collapse;
    • watermelon - stunting, mottling and mosaic patterns on leaves, rots on stems and fruit stalks, fruits with internal discolouring or rots. Plants may die early;
    • melon - mottling and mosaics, deformities and mottling on fruit;
    • pumpkin - no symptoms or mottling/mosaics on leaves or fruits;
    • squash/zucchini - no mottling/mosaics; internal discolouring or rots in fruits.
  • Spread is in seed and soil. Also handling, grafting, leaf-to-leaf contact, bees, manures, hydroponics/irrigation, tools, machinery, clothing, root-to-root contact. Survival in seed, crop debris and soil.
  • Cultural control: certified seed; biosecurity plan for farm; disinfect pots, trays, machinery (1% sodium hypochlorite); use disposable gloves if grafting; check each seedling in the nursery; weed; monitor; collect crop remains after harvest, stakes, plastic mulch, and burn; use 2-year rotation if plants infected; resistant varieties.
  • Chemical control: not a method recommended.
Common Name

Cucumber green mottle mosaic

Scientific Name

Cucumber green mottle mosaic virus. It is a member of the tobamosaic genus. The official abbreviation is CGMMV. There are several strains.

AUTHOR Grahame Jackson
Information from CABI (2019) Cucumber green mottle mosaic virus. Crop Protection Compendium. (; and Cucumber green mottle mosaic virus. A seed production and commercial growers guide. Asta and California Seed Association (; Cucumber green mottle mosaic virus (CGMMV) Fact Sheet. PIRSA. South Australia. ( Photos 1-3 Department of Primary Industry and Resources. Northern Territory, Australia.

Produced with support from the Australian Centre for International Agricultural Research under project HORT/2016/185: Responding to emerging pest and disease threats to horticulture in the Pacific islands, implemented by the University of Queensland and the Secretariat of the Pacific Community.

Copyright © 2022. All rights reserved.