In the process of the invention, the seed to be treated, a predetermined amount of solid matrix material and a predetermined amount of water are admixed and the mixture allowed to stand, preferably in a container which allows entry of air but which reduces evaporation losses, for example, a closed metal container with a small top opening, for a time and at a temperature sufficient to enhance resultant plant vigor, i.e., enhance emergence, growth of yield characteristics, but short of that which would cause the seed to sprout. Faulty seeds may be separated by size and systemic resistance to disease can be induced.
