A Mexican scientist inspects a field of olotón maize near Oaxaca, Mexico. Allen Van Deynze/UC Davis
A nitrogen-fixing maize grown in an indigenous region of Mexico has the ability to fertilize itself, recent research shows. Now, as a global company and U.S. scientists work to replicate this trait in other corn varieties, will the villages where the maize originated share fairly in the profits?
In a 1979 visit to Totontepec, a small town in Oaxaca, Mexico, naturalist Thomas Boone Hallberg marveled at the local maize. The plants grew nearly 20 feet high in nutrient-poor soil, even though local farmers did not apply any fertilizer.
The maize had aerial roots that grew a mucous-like gel just before harvest season. It seemed impossible, but Hallberg wondered if the maize was fixing its own nitrogen: extracting it from the air and somehow making it usable for the plant. He had visited countless towns since moving to Oaxaca in the 1950s, but what he saw in Totontepec stuck with him…