Expanding citrus market access using a systems approach to control black spot

Abstract

The aim of this project was to develop, implement and evaluate a systems approach for the management of citrus black spot (CBS) (Guignardia citricarpa) to facilitate the export of citrus from CBS endemic regions in Australia to markets such as the USA. CBS and fruit fly are both considered quarantine organisms by the USA, and the presence of either in a citrus production area currently limits fresh citrus exports. It is likely that fruit fly quarantine restrictions can be overcome by currently available preharvest and postharvest treatments, but there are currently no equivalent protocols for overcoming the CBS barrier to market access. The systems approach will utilise recognised integrated disease management practices for CBS to facilitate negotiations for market access to countries such as the USA; a desirable market for Australian fruit due to seasonality and exchange rates.