In some ways, Katia Abreu is still an old-fashioned farmer, one who rides her chestnut mare, Billy Jean, to tour her farm in Tocantins state in north-central Brazil.
She glides the horse along a gravel road, which soon turns to dirt, and along fields of sorghum and corn. She has plans for more.
"Soon, we're going to produce fish and lamb," she says. "There will be soybeans and fields of tall grass for cattle. Lots of cattle."