The Choice of Seedlings
To economize space, seedlings may be grown close together during the first few months, until the individuals have revealed their qualities. Then, of course, the weaklings will be weeded out and room given for the thrifty ones to continue growth. This picture illustrates the difference in growth-notably in sturdiness of stem-between two seedlings from the same lot of seeds. It is obvious that the orchardist will preserve the one at the left, as the much likelier fruit-producer.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 4 Chapter 2