Excerpts from the report: The Florida citrus industry is much interested in the possibility of shipping oranges and grapefruit to Europe in ventilated holds, rather than the more expensive refrigerated holds. Although ventilated shipments of Florida citrus fruits from South Atlantic and Gulf ports are frequently unsuccessful during the winter, an even greater risk exists during the warmer months late in the season. This study was conducted to determine: (1) How late in the season ventilated shipments of citrus fruit, which had been chemically treated to inhibit decay, could successfully be made, taking into consideration the sources of the oranges and grapefruit, and (2) the relative effectiveness of various chemical treatments.