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Available for over a year

Tom Heap meets Humphrey and Terry Banack who farm 7000 acres of prime Canadian prairie, producing the wheat that makes the bread on Britain's supermarket shelves. Three combine harvesters and a clutch of huge tractors allow them to farm this vast Alberta landscape of wheat, barley and oil seed rape as far as the sharpest eye can see. In winter the mercury can dip to minus twenty degrees but the hot summer sun produces some of the best wheat yields in the world. Tom and the Banacks discuss farming on an enormous scale and the future of Canada's exports as world trade looks set to enter an age of protectionism. Producer: Alasdair Cross.