Using the Relative Maturity Rating System for Selecting Corn Hybrid Maturity
Robert Hall · Open PRAIRIE (South Dakota State University) · 1995
In recent years, delayed seeding and replanting following killing spring frosts have caused many corn growers to consider whether they are using the right maturity rating system to select the proper hybrid maturity for their area. The most common methods for rating corn hybrid maturity include: • The “relative maturity” (RM) rating system • The “growing degree day” or “heat unit” system (GDD)