I've just been thinking about something said earlier about fruit imported from Africa. Having heard about the use of untreated "night-soil" as fertiliser in a number of countries, I'd be worried about any kind of foodstuff - from anywhere at all - which couldn't be accompanied by hard evidence that fertiisers, and the water used for irrigation, were not contaminated with e-coli and other bio-hazard greeblies. Also that the processes involved in harvesting, packing and transport didn't include the possibility of contamination.

If irradiation can eliminate the potential for things like cholera and typhoid etc, I'm all for it!