During the second half of the 20th century there was a significant increase in the production of high-yield cereal crops worldwide, especially wheat and rice, due to an initiative known as the Green Revolution.
Durante a segunda metade do século XX houbo un incremento espectacular na produción de cultivos con alta colleita de cereais por todo o mundo, especialmente trigo e arroz, debido a unha iniciativa coñecida como a Revolución verde.