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Maintaining Quality in Christmas Tree Shipments

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Douglas-fir Christmas trees shipped in railroad box cars from the Pacific Northwest to Los Angeles, Calif., suffer varying degrees of deterioration, depending on treatment before shipment, length of time in cars, and temperatures within loads during shipment. Test shipments were made in 1962 in a standard box car and a mechanically refrigerated car, with recording thermometers at three levels within the loads. Additional shipments in standard box cars were made in 1964 using crushed ice blown in on the loads as a coolant. At Los Angeles the 1962 trees were mounted under simulated home conditions and their useful life measured for 11 days. Needle-drop proved a poor measure of deterioration but observations of color, dryness, and needle-drop on the 10th day showed obvious differences. Time of cutting, previous fertilizing, along with position in packing, and shipping temperature affected the useful life and value of trees.
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Document Type: Journal Article

Affiliations: Assistant Agricultural Economist, Department of Agricultural Economics, Oregon State University, Corvallis

Publication date: 01 November 1965

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