changes since then sohave turned vietnamenough. into the world's second largest rice exporter.fective irrigation, land management and accesthe benefits ofets arits physical environment. before 1988, rice in vietnam was produced by collectives. individual farmers had little responsibility for their land and virtually no incentive to increase productivity. ( man speaking vietnamese ) translator: in the collective system, farmers are just hired hands. everything they produce becomes the collective's property. the collective then tries to sell the produce narrator: in the 1990s, a market-oriented "contract system" was installed. the collectives were disbanded, reinstating the individual farmer as the linchpin of rice production. translator: in the contract system, the farmers profit from whatever they produce; they're wholly entitled to the fruits of their labor. narrator: the move from collective to commercial farming also created another success story. the hill country to the north, between hué and saigon-- or ho chi minh city-- is a perfect clima from where to growofe. narrator: