Intresting, Im not sure what to make of it, about 50%+ of the people working at the onion farms I have been at were backpackers, the rest were other immgrants and 1% ozzies.
I do think with the current numbers there will be enough people to carry on picking for the harvests but the study fails mention how much profit Oz makes from visas and the amount of $$$ people spend when in oz on a WHV. A lot of what people save here in jobs, goes staright back to the ozzie people in one form or another (hostels, food, drinking etc).