Farming is massively more productive than it used to be owing to changes in both plant varieties, fertilizers, pest control, and mechanization. This link[1] su

Farming is massively more productive than it used to be owing to changes in both plant varieties, fertilizers, pest control, and mechanization. This link[1] suggests that historical yields of corn were ~2 tonnes/hectare in the 1940s vs ~10 tonnes/hectare today. [1] https://ourworldindata.org/crop-yields https://ourworldindata.org/crop-yields