During the summer of 1965 , several varieties of summer annual grasses were seeded at the rate of 10-12 pounds per acre, in rows 3 feet apart, at the Woodford County Farm and at the Western Kentucky Substation. These varieties were replicated four times and harvested three times at each location. Harvest data are reported in the attached table. It should be noted that data from Woodford county are reported in dry matter per acre and that from Princeton in air-dry forage. Previous studies have indicated that yield data from 3-foot rows of this type of material should be multiplied by a conversion factor of 2 to 2.5 to make the data comparable with data from broadcast plantings under .the simulated grazing conditions used.
Stroube, W. H., "Summer Annual Grasses - Kentucky" (1966). Agronomy Notes. 207.