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 cells that are stored in the male body are not capable of self-movement because of the acidity of the accompanying fluids. When the sperm receive fluids, called seminal plasma, from the various internal accessory organs (prostate gland, ejaculatory ducts, seminal vesicles, and bulbourethral glands []), the acidity decreases. As they leave the body, the sperm receive oxygen, which is vital to motility.