Vietnam’s corn farms are now split almost evenly between traditional and genetically modified (GM) varieties. The shift matters because it directly affects farmers’ incomes and the environment, making it a story worth following.

The share of GM corn grew from 1.1 % of the total corn area in 2015 to nearly 50 % in 2025. Dr. Phung Danh Huan said farmers choose the technology mainly for its economic efficiency and environmental benefits.

According to Dr. Huan, GM corn yields between 2016 and 2025 were 15.2‑30 % higher than those of conventional seeds, giving an extra profit of VND 4.34‑7.34 million (US$169‑284) per hectare. The same period also saw a drop of almost 135,000 kg of herbicides and more than 62,000 kg of insecticides.

More than 80 % of the GM corn‑growing area is planted with varieties that combine insect resistance and herbicide tolerance. This mix helps farmers cut chemical use while keeping yields high.