This is an OK article on fertilization. The article does not say so, but proper fertilization should promote healthy plants. Healthy plants will be nutritious plants. The other thing that is critical to hay quality is timely harvest and hay that is dried without being rained on.
CCA, CPSS, CPSEC
Reared on a farm in Southwestern Illinois
Educated at the University of Illinois in Urbana-Champaign (1977)
25 years with USDA-SCS (NRCS since 1994)
Soil-Right Consulting Services, Inc. 2005 - 2015
RPM Soils LLC 2016 to present