"... Buckwheat does not belong in any regular . It is an ideal grain . When a meadow or a grain field in the regular rotation fails there is no better crop to fill up the loss. Buckwheat is a good crop—there is no better where climatic conditions are right—to sow on new ground or ground that has long been out of cultivation. On poor ground there is no grain crop that can compete with it."
January 1, 1970
https://en.wikiquote.org/wiki/Buckwheat