Growing population and improved transportation links increased the size of the potential market; by 1860, West Springfield was using greenhouses and exporting fresh crops to Boston.
When markets are open, agricultural products flood in from wealthy nations, which subsidize agriculture and allow agribusiness to export crops cheaply.
Several large international companies dominate Panamanian exports, especially when it comes to export crops such as bananas.
White farmers argue that parcelling out commercial farmland in small plots will reduce productivity and so jeopardise the country's ability both to feed its people and to export valuable crops.
Europe is showing no signs of easing its restrictions, and is in fact considering tightening some of them, which would make it more difficult to export biotech crops there.
Requiring a portion of agricultural production to be devoted to export crops, Indonesian historians refer to it as Tanam Paksa ("Enforcement Planting").
The US$3 million airport was constructed in 3 months in 2003 to meet the needs of investors to bring equipment and to export crops.
By 1970, about 20 per cent of the land in cultivation was down to export crops.
Ruined farmers will shift to export crops or find other kinds of work.
Not surprisingly, large-scale farmers have responded to these incentives by switching to export crops, while small peasant farmers have seen their food crops wither in the hot sun.