Transit Temperatures of California Iceberg Lettuce Shipped by Truck During the Hot Summer Months

R. Tom Hinsch, Roger E. Rij and Robert F. Kasmire

No 313281, Marketing Research Reports from United States Department of Agriculture, Agricultural Marketing Service, Transportation and Marketing Program

Abstract: This report describes the results of 10 test shipments of naked-pack iceberg lettuce shipped by highway trailer during the warm summer months. On arrival at eastern markets, lettuce in boxes that were loaded directly on the floor averaged 4.6°F (2.6°C) warmer than lettuce in boxes that were loaded on racks that raised the lettuce about 4 inches (10.1 cm) above the truck floor. The temperature of lettuce loaded against trailer sidewalls that had recessed vertical grooves was about 2°F (1.1 °C) cooler than the temperature of lettuce loaded against sidewalls that were flat. This study also included an enumeration of the various features of 623 randomly selected trailers at lettuce loading docks in central California in 1979. Most had flat sidewalls, wide canvas air-delivery chutes, front bulkheads, and extruded aluminum grooved floors. Most of the trailers were not precooled before loading.

Keywords: Crop Production/Industries; Marketing; Research and Development/Tech Change/Emerging Technologies (search for similar items in EconPapers)
Pages: 10
Date: 1981-06
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Persistent link: https://EconPapers.repec.org/RePEc:ags:uamsmr:313281

DOI: 10.22004/ag.econ.313281

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