Effects of cutting frequency and N fertilization level on the total nitrogen yield of orchardgrass varieties
1986
Lee, J.S. (Yonsei Univ., Seoul (Korea R.). Inst. of Agricultural Development)
This experiment was carried out to study the effects of cutting frequency and N fertilization on the total nitrogen yield of orchardgrass varieties with different maturity. Total nitrogen yield response to N fertilization levels was almost linear up to about 320 kg/ha with four cuttings (C-4), but the response of two cuttings (C-2) increased quadratically up to the 320 kg/ha level. The interactions of cutting frequency x N level and N level x variety were significant in this experiment. Total nitrogen yield of C-2 was increased only by 8 % than C-4
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