After years of crossbreeding rice in my fields, however, I finally concluded that on a natural farm, people do not need to create new varieties by artificial crossbreeding at all, since the insects that most people consider as harmful were creating new varieties on their own.

In my rice fields, I noticed that after locusts and other insects had chewed round holes in the rice grains just as the heads were sprouting, slugs, snails, cutworms, and other creatures came along and crawled over the grains at night. They ate down to the stamens in the holes, after which windblown pollen from other varieties adhered and achieved fertilization. In other words, rice, which is said to be self‐pollinating, can also be pollinated by other plants, and in this way new varieties arise naturally.

— The Dragonfly Will Be the Messiah by Masanobu Fukuoka (Page 33)