The effect of the fruit container on a commodity treatment of mangoes with 1,2-dibromoethane against the queensland fruit fly,Dacus tryoni (froggatt)

Fruit packed in fibreboard cartons required a higher dosage of 1,2-dibromoethane (EBD) for an effective commodity treatment than fruit packed in polystyrene trays. This was due to considerably greater sorption of EDB by fibreboard compared with polystyrene, as indicated by concentration-time products. However, compensating factors in the form of a lower sorption of EDB by the fruit itself when in fibreboard cartons, and a residual fumigant effect for fruit in such cartons, reduced the expected increase in dosage requirement. The required dosages of EDB for effective treatments were 20 g m^?3 in fibreboard cartons and 16 g m^?3 in polystyrene trays, for 2 h at 20°C.