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Research Project:
Development of Postharvest Quarantine Treatments for Pome and Stone Fruits Suitable for Organic and Conventional Growers
Location:
Wapato, Washington
Project Number: 5352-43000-009-09
Project Type:
Reimbursable
Start Date: Sep 10, 2003
End Date: Sep 30, 2006
Objective:
1) Determine commodity tolerances to CATTS. 2) Determine target pest tolerances to CATTS. 3) Develop appropriate treatments protocols. 4) Determine effects of CATTS on market quality. 5) Effects of CATTS on decay and storability. 6) Determine economics of CATTS.
Approach:
Complete studies of apple and sweet cherry thermal experience on the tree in different growing regions. Compare postharvest tolerances to CATTS to pre-harvest thermal experience. Will test heating rates of 10, 12 and 24 degrees C/hr to 44 and 46 degrees C for apples and rapid versus batch treatments for sweet cherries to final treatment temperatures of 45 and 47 degrees C. Rapid rates bring core temperatures to 42 degrees C within 5 to 7 min, and batch treatments bring core temperatures up to 42 degrees C within 10-12 min. Begin trials of CATTS treatments in various configurations of bins and picking lugs in half-ton CATTS chamber. Market quality will be used as indicator of commodity tolerance. Documents Reimbursable with U. of Tasmania. Log 23792.
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