The Alabama Experiment Station system evaluates variety performance of several crop species
each year. Ryegrass studies were conducted in 2015 through 2016 at four locations across the
state representing the northeast, central, southeast, and southwestern regions. The entries
evaluated are chosen by private company, university, and federal staff. It is the mission of the
experiment station to evaluate and present the data in a fair, unbiased manner that can be
used by all sectors of industry and education.
Ryegrass entries were seeded at 20 lb/acre in 7-inch rows (Table 1). Plots were 5 x 20 ft with
four replications of each entry arranged in a randomized complete block experimental design.
The 2015 – 2016 trials were conducted at the Gulf Coast Research and Extension Center,
Fairhope; E.V. Smith Research Center, Plant Breeding Unit, Tallassee; Sand Mountain Research
and Extension Center, Crossville; and the Wiregrass Research and Extension Center, Headland.
Soil fertility was maintained at each location according to Auburn University soil test
recommendations. At planting, nitrogen was applied at 50 lb/acre, with an additional 50
lb/acre N applied after each cutting. When the ryegrass reached a height of 6 to 10 inches, a
flail harvester was used to cut the plants to 1 to 2 inches. According to the location, a section
32- or 49-in wide X 20 ft long from each plot was harvested. Dry matter yield was determined
by drying subsamples from each variety and then calculated using fresh and dry weights.