Parsley summer root rot (SRR) affects all parsley-growing regions of Australia, and can lead to crop losses of up to 100 per cent. This study looked at the causal pathogens of SRR and developed an understanding of the disease’s epidemiology, particularly in relation to environmental conditions and practices. It also looked at integrated disease management strategies for the disease.

Research from this project confirmed that Pythium sulcatum is the most important cause of parsley SRR. This knowledge means growers can now apply more appropriate and effective management strategies targeting the pathogen. It was also found that longer crop rotations are needed in soil-based parsley production systems, particularly on farms where other apiaceous crops are grown.

This project has been funded by Hort Innovation, using the research and development levies listed below and contributions from the Australian Government. Hort Innovation is the grower-owned, not-for-profit research and development corporation for Australian horticulture.

• Vegetable Fund