Summary of Awards to Date

Disinfest lettuce of insects through postharvest treatments and pre-harvest IPM.

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Date

Dec. 10, 2002 - Dec. 9, 2007

Award Number

5305-43000-002-00

Funding Agency

Center for Produce Safety

Investigator

Yong Liu, Ph.D.
USDA - ARS

Summary

Results from controlled atmosphere studies on postharvest control of western flower thrips on iceberg lettuce were reported. Close to complete control of thrips was achieved with 2, 3, and 4 day ultralow oxygen treatments at 10, 5, and 1C respectively. However, the treatments also resulted in minor injuries to lettuce heartleaves. The proportion of lettuce heads injured varied with treatment and lettuce cultivar. The 2 day treatment at 10C was safest and 4 out of 8 cultivars tolerated the treatment. The treatment seems to have good potential to be further developed for postharvest control of western flower thrips on iceberg lettuce.