The Familiar Beet
These exceptionally fine specimens present an improved variety of a plant that grows in every garden. Nowadays, however, the beet is not merely a garden vegetable, but a field plant of the very highest importance; inasmuch as it is the chief source of the world's sugar supply. Through selective breeding, the sugar content of the beet has been enormously increased within recent years, and this humble vegetable now outrivals the sugarcane as a producer of sweets.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 7 Chapter 2