AP06007- Extension AP05002: Alternaria Fruit Spot: New Directions: Final Report

Akinsanmi, Femi, Drenth, Andre and Macleod, Nick (2014) AP06007- Extension AP05002: Alternaria Fruit Spot: New Directions: Final Report Sydney, Australia: Horticulture Australia

Author Akinsanmi, Femi
Drenth, Andre
Macleod, Nick
Title of report AP06007- Extension AP05002: Alternaria Fruit Spot: New Directions: Final Report
Publication date 2014
ISBN 0734132697
Publisher Horticulture Australia
Place of publication Sydney, Australia
Total pages 101
Language eng
Formatted abstract
This project was established to provide a better understanding of two diseases of apple caused by similar pathogens in Australia. Our research has resolved the identity of the species of Alternaria pathogen(s) that cause leaf blotch and fruit spot of apples in Australia. We have identified the risk of more widespread impact of fruit spot in all apple producing regions of  Australia. The potential exists for these diseases to become a significant contributor to production losses in the Australian apple industry.

Outcomes from field trials performed on commercial orchards have provided a better understanding of the lifecycle of the pathogen, the sources of inoculum and timing of infection for both diseases. This information has enabled the development of a disease management strategy for the apple industry. When implemented, it is estimated to save the Queensland apple industry over $2.25 million in lost production annually. In the short term it will save the Australian apple industry between 15-25% in lost production of the high value varieties. The long-term benefit of the research outcomes will lead to reduction in reliance on chemicals for controlling the diseases. These findings of our research have been published in scientific journals and apple industry magazines and communicated to growers at several meetings.

This project highlights the importance of securing long-term plant pathology capability for all endemic apple diseases, screening for disease resistance, managing endemic diseases in a cost effective manner as well as preparedness for possible incursion of exotic pathogens in the Australia apple industry, to safeguard production and local markets. A PhD student was successfully trained in this project.

This project has identified future research priorities for diseases caused by Alternaria in apple including associated risks for fruit quality and food safety from contamination of fruit infected with Alternaria as fruit spot or mouldy core rot. It has highlighted the need to monitor development of fungicide resistance in the apple industry. Essential research priorities for diseases caused by Alternaria, other endemic diseases and the need to maintain local expertise for these diseases both endemic and exotic diseases of apple in Australia are emphasized in this report.  
Q-Index Code KX
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Research Report
Collection: School of Agriculture and Food Sciences
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Created: Fri, 04 Jul 2014, 09:30:24 EST by Dr Olufemi Akinsanmi on behalf of School of Agriculture and Food Sciences