POSTHARVEST QUARANTINE TREATMENTS FOR DECIDUOUS TREE FRUITS FOR ORGANIC AND CONVENTIONAL GROWERS

• Sponsoring Institution: Agricultural Research Service/USDA
• Project Status: COMPLETE
• Funding Source: USDA COOPERATIVE AGREEMENT
• Reporting Frequency: Annual
• Accession No.: 0407985
• Project Start Date: Feb 1, 2004
• Project End Date: Sep 30, 2005
• Program Code: [(N/A)]- (N/A)

Recipient Organization
SCIENTIFIC HORTICULTURE PTY. LTD
3 KADINA CLOSE
ALLENS RIVULET 7150,null null

Performing Department
(N/A)

Non Technical Summary
(N/A)

Animal Health Component

60%

Research Effort Categories

Basic

40%

Applied

60%

Developmental

0%

Classification

Knowledge Area (KA)	Subject of Investigation (SOI)	Field of Science (FOS)	Percent
211	1110	1060	40%
211	1112	1060	30%
211	1115	1060	10%
211	1213	1130	10%
211	1499	1130	10%

Knowledge Area
211 - Insects, Mites, and Other Arthropods Affecting Plants;

Subject Of Investigation
1499 - Vegetables, general/other; 1110 - Apple; 1112 - Cherry; 1115 - Pear; 1213 - Walnut;

Field Of Science
1060 - Biology (whole systems); 1130 - Entomology and acarology;

Keywords

catts

thermal

tolerance

decay

and

storability

thermal

experiences

treatment

temperatures

market

quality

Goals / Objectives
(1)Determine commodity tolerances to CATTS (2)Determine target pest tolerances to CATTS (3)Develop appropriate treatment protocols (4)Determine effects of CATTS on market quality (5)Effects of CATTS on decay and storability (6)Determine economics of CATTS

Project Methods
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. Test heating rates of 10, 12, 24 degrees C per hour to 44 and 46 degrees C for apples and rapid vs 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; 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 chamger. Market quality used as indicator of commodity tolerance. Documents SCA with Scientific Horticulture Pty. Ltd. Formerly 5352-43000-009-11S (6/05).

Progress 02/01/04 to 09/30/05

Outputs
4d Progress report. This report serves to document research conducted under a specific cooperative agreement between ARS and the Scientific Horticulture PTY. LTD, Tasmania, Australia. Additional details of research can be found in the report for the parent CRIS 5352-43000-010-00D Improved Postharvest Phytosanitation of Temperate Fruits and Vegetables. Fruit temperatures were recorded over a 2 month period during the growing season in Tasmania. Cherry temperature monitoring revealed that sweet cherries can heat very rapidly on the tree at rates from 50 to 100 DGC/hr.

Impacts
(N/A)

Publications