Pine breeding in the United States

Abstract

Trees fit into the general rule that (the plants and animals which nature gave us have not been considered quite good enough. For millions of years, it is true, nature has developed a breathtaking variety of forms, each wonderfully adapted to its surroundings. Changes in climate or the conformation of the earth's surface have caused the extinction of some forms and the development and migration of others. But during the long development of civilization man has learned to alter some of the myriad forms of life about him, making them better suited to his needs.

Citation

Duffield, J. W.; Stockwell, Palmer. 1950. Pine breeding in the United States. In: Trees, the Yearbook of Agriculture 1949. United States Department of Agriculture: p. 147-153