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The bids will generate over US$55 million in profit for the group

There is one thing that distinguishes 60-year-old Vo Van Van’s rice fields from a mosaic of thousands of other emerald fields across Long An province in southern Vietnam’s Mekong Delta: It isn’t entirely flooded. That and the giant drone, its wingspan similar to that of an eagle, chuffing high above…

LONG AN, Vietnam — There is one thing that distinguishes 60-year-old Vo Van Van’s rice fields from a mosaic of thousands of other emerald fields across Long An province in southern Vietnam’s Mekong Delta: It isn’t entirely flooded. That and the giant drone, its wingspan similar to that of an…

There is one thing that distinguishes 60-year-old Vo Van Van’s rice fields from a mosaic of thousands of other emerald fields across Long An province in southern Vietnam’s Mekong Delta: It isn’t entirely flooded.

LONG AN, Vietnam: Sixty-year-old Vo Van Van has been working with one of Vietnam's largest rice exporters, the Loc Troi Group, for the past two years and is using a different method of irrigation known as alternate wetting and drying. This requires less water than traditional farming since his paddy fields aren't continuously submerged. Less methane is also produced.