The effect of the fruit container on a commodity treatment of mangoes with 1,2-dibromoethane against the Queensland fruit fly, Dacus tryoni (Froggatt).
Swaine G., Corcoran R. J., Cranny A. E., Davey M. A.
Author Affiliation: Entomology Branch, Primary Industries Department, Indooroopilly, Brisbane 4068, Australia.
Pesticide Science 11 : 467-470
Abstract : In tests in Queensland, mangoes packed in fibreboard cartons were found to need a higher dosage of 1,2-dibromoethane (EBD) for effective fumigation against Dacus tryoni (Frogg.) than fruit packed in polystyrene trays. This was due to considerably greater sorption of EDB by the 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/m3 in fibreboard cartons and 16 g/m3 in polystyrene trays, for 2 h at 20 deg C.