In the field of modern seed technology, maintaining a high germinability and vigour is one of the most important challenges so far faced by the seed and cereal sector. Among the various variables, both of an internal and external nature, humidity and temperature represent factors of primary importance for maintaining a high seed vitality. The humidity of the seed if higher than limits the value, induces a rapid decrease in vitality, while if it is lower the seed’s vitality is preserved. In the case where the seed has a high degree of humidity in an environment with high temperature and relative humidity, the seed can easily ferment with consequent loss of dry substance and the development of a fungine microflora.