This may require planting deeper than 1.5 inches under dry soil conditions. If you must plant deeper than 1.5 inches in order to place the seed into uniform moisture, make sure the variety has an excellent emergence score or long hypocotyl. Also, consider seed size when deciding how deep to plant.
Sperm is made in the testes, but stored in the epididymis, a gland where it is also matured. Sperm from the testes cannot yet move on their own.
Length of time sperm samples may be frozen. As far as we know, the viability of cryopreserved sperm may be kept forever. This is due to the freezing technique and because the semen is stored at such a low temperature (-196 C). Samples stored more than 20 years have been used to create successful pregnancies and healthy babies.