- Worldwide distribution. In soil, and on many hosts. Minor disease of jackfruit, whereas soft fruit and vegetables infected through wounds. In field, rots during long, wet weather; in storage, rots when temperatures and humidty high.
- On flowers and young fruits. On mature fruits, soft, watery, brown spots covered in grey-brown, later black, furry mould. Fruit symptoms occur on tree and in storage.
- Spread by spores in air; thick-walled spores for survival in soil, on plant debris, on seed.
- Cultural control: prune to encourage air flow; remove infected fruits from trees, and ground; harvest and transport carefully; avoid storage at high humidity; if possible, store <10°C; clean packing shed, and use clean bins.
- Chemical control: use mancozeb, benzimidazole, or triazole. To improve storage, apply 10-day pre-harvest spray.
Pacific Pests, Pathogens, Weeds & Pesticides
Jackfruit Rhizopus rot (324)
Jackfruit Rhizopus fruit rot
Rhizopus stolonifer; previous names are Mucor stolifer, Rhizopus artocarpi, Rhizopus nigricans.
AUTHORS Grahame Jackson & Eric McKenzie
Information from Soft rot of Jackfruit (undated) Plantwide Knowledge Bank. (https://www.plantwise.org/KnowledgeBank/factsheetforfarmers/20157800446); and Trakunsukharat P, et al. (2011) Rhizopus rot (Rhizopus stolonifer): PaDIL - http://www.padil.gov.au; and from (including Photos 1,2&4) McKenzie E (2013) (Rhizopus stolonifer): PaDIL - (http://www.padil.gov.au). Photo 3 Ellen Iramu, Honiara, Solomon Islands.
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.