Dec. 10, 2002 - Dec. 9, 2007Award Number
Center for Produce SafetyInvestigator
Yong Liu, Ph.D.
USDA - ARS
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.