Quarantine for Seed

Abstract

There is hardly a more efficient means of spreading plant diseases over long distances than by transportation of seed, and practically no limit as to how far seed may be sent. Any seed-borne inoculum surviving from harvest to time of sowing may be safely conveyed from any part of the world to another, irrespective of geographical barriers such as oceans and mountains. This is true for any part of plants transported over long distances, such as vegetative plant material for propagation. But from several points of view there is a particular risk attached to seed.