A Guide to the Common Postharvest Diseases & Disorders of Navel Oranges and Mandarins Grown in Inland Australia

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This guide should be used to identify disorders when fruit arrives at overseas markets and to provide useful feedback to the industry when a problem occurs. It is aimed to assist growers, packers, wholesalers and exporters that may be present at outturn. As such, the information provided focuses on the most common problems occurring on citrus sent to our major export markets. It does not show defects, such as wind blemish, that should be sorted out before packing.
To the untrained eye, many postharvest symptoms can be confused. When in doubt, seek advice before committing to costly and perhaps inappropriate corrective treatments.

Peter Taverner
Barry Tugwell
Brian Wild
South Australian Research and Development Institute