RPT-FOCUS-Walmart patents hint at future where its drones tend the farms
March 15, 2018 at 07:00 AM EDT
NEW YORK/CHICAGO, March 15 (Reuters) - Walmart Inc's patent filings hint that it may see a future where farmers use its drones to not only spot crop problems but selectively apply chemicals or even disperse pollen to bring shoppers the freshest and cheapest food possible.