Photoperiod Sensitive (PPS) Sorghum Sudan (SxS) crosses are a useful forage for dry cows and heifers. PPS is a Non-GMO trait of the sorghum family. The trait prevents the plant from going reproductive (heading out) until the daylight gets shorter than 12 hours and 20 minutes. This occurs each year about mid-September (depending on your latitude). If we want the highest dairy-quality forage, SxS Continue Reading