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.
Sperm can be frozen at extremely low temperatures (but not in the refrigerator) and survive for years. Sperm can survive in the vagina for up to several hours. Most sperm die in the cervix within 24-48 hours, but some can survive for 4-5 days. Some sperm can also survive in the fallopian tubes for several days.