Photo 1. Onion seedlings attacked before emerging through the soil and afterwards. An example of pre- and post-damping-off. (Germination of the seed was high!)
Photo 2. Cabbage seedlings have been attacked at the junction of stem and soil, a case of post-emergence damping-off.
Commonly, Pythium and Rhizoctonia are involved, but Fusarium and Phytophthora may also cause similar diseases. Note, Pythium and Phytophthora are not fungi but water moulds or oomycetes, related to algae.
AUTHORS Helen Tsatsia & Grahame Jackson
Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.
This mini fact sheet is a part of the app Pacific Pests and Pathogens
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