And as the financial world's interest in farmland grows, some observers have raised concerns about the new landowners' switching to crops that pay better but that work the soil too hard and use up precious resources like water. In California, for example, a recent move toward nut trees has put pressure on already constrained water resources during a severe drought.
These concerns are likely to increase as more farmland changes hands from farmers to corporations.
But to Mr. de Lapérouse, whose HighQuest Partners started Global AgInvesting, a series of conferences that take place in Dubai, London, New York and Singapore, the current level of interest is just the beginning.
"Less than 1 percent of global farmland is owned by institutional investors," Mr. de Lapérouse said. "So even if you quintupled that, it would be a major sea change, but it's still only a little territory."
—By Alexandra Stevenson, The New York Times