ISHS Acta Horticulturae 934: XXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010): International Symposium on Postharvest Technology in the Global Market
EFFICACY OF A COMBINATION QUARANTINE TREATMENT AT 3°C AS A POTENTIAL DISINFESTATION TREATMENT FOR QUEENSLAND FRUIT FLY (BACTROCERA TRYONI (FROGGATT)) IN CHERRY FRUIT |
| Authors: | J.B. Golding, A. Jessup, L. Spohr, D. Daniels, S. Satyan , P. Pristijono, W.B. McGlasson, J. Jacas |
| Keywords: | carbon dioxide, disinfestation, fruit quality, cherry, combination treatment, storage |
| DOI: | 10.17660/ActaHortic.2012.934.43 |
| Abstract:
Queensland Fruit Fly (Bactrocera tryoni (Froggatt) (QFF)) is a major quarantine pest for some Australian cherry producers, particularly as treatment to combat infestation can often affect fruit quality, restrict marketing flexibility and affect grower returns. Our previous work has shown that a combination treatment of 95% carbon dioxide (CO2) at 0°C for varying lengths of time before storage in air was effective at killing first instar QFF larvae whilst maintaining fruit quality. However, the practicalities of maintaining constant 0°C disinfestation temperature is difficult, particularly during transit, and industry would prefer to use a 3°C disinfestation temperature. Therefore, a range of disinfestation and fruit quality experiments examined the effects of the combination of a short term high CO2 treatment at 3°C. ‘Rons’ cherry fruit were infested with QFF and the fruit were treated with 95% CO2 at 3°C for varying lengths of time before storage in air. To examine if high CO2 had any effects on fruit quality, storage trials were conducted on a range of cultivars (‘Lapin’, ‘Rons’, ‘Stella’ and ‘Bing’). The results showed that a 95% CO2 treatment at the beginning of the cold disinfestation period significantly reduced the time to kill first instar QFF. There were no adverse effects of the high CO2 treatment on fruit quality across a range of treatment times and cultivars. A short-term high CO2 treatment at 3°C was effective in reducing the time in cold disinfestation without detriment to fruit quality during storage. | |
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