The aim of this experiment was to investigate the effects of applying times and dilution rates of cattle slurry on dry matter yields of orc㏊rd grass. Cattle slurry was applied at the rates of average mineral nitrogen fertilizer equivalent to 150 ㎏/㏊/year in 3 cutting frequency. Significantly higher dry matter yields t㏊n t㏊t of no fertilization (3.04 ton DM/㏊) were recorded in the application of diluted cattle slurry(5.38~6.25 ton DM/㏊) (p