Sweet cherries infested with codling moth and western cherry fruit fly were subjected to acute high temperature treatments in combination with a controlled atmosphere. Treatments were conducted in a ‘batch’ mode in which the infested fruit were loaded into the CATTS (Controlled Atmosphere/Temperature Treatment System) chamber and the atmospheres established (1% O2, 15% CO2) prior to the application of the heat. Treatments were conducted to two final chamber temperatures of 45°C and 47°C, for total durations of 40 and 25 minutes, respectively. The life stage most tolerant to each treatment was determined for each species. In a second series of experiments, the effects of various levels of carbon dioxide (0 to 20%) and oxygen (0.5 to 20%) during CATTS treatments of sweet cherries infested with third instar codling moth were determined.
Species 1: Lepidoptera Tortricidae Cydia pomonella (codling moth)
Species 2: Diptera Tephritidae Rhagoletis indifferens
Keywords: CATTS, cherry
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