Comparative Relative Maturity (CRM) is a standardised measure used to compare how long it takes different corn hybrids to reach physiological maturity—specifically, when the grain reaches black layer.
PAC 500 has a CRM rating of 111 days*, which places it in the medium maturity category. This means it takes longer to mature than quick-season hybrids, making it a strong choice where longer growing windows allow for maximising yield potential.
*Although CRM is expressed in “days”, it’s not a literal count of calendar days. Instead, it reflects a relative measure based on accumulated heat units (growing degree days or GDDs) under standardised conditions. So, a 111 CRM hybrid like PAC 500 typically matures later than hybrids with lower CRM values, but the actual number of days to maturity can vary by environment.