doi:0801-5333(1996)10:3/4<267:ONGODT>2.0.TX;2-Nbarleycrude proteingrain yieldN-balanceN-recoveryoatssoil mineral-Nsplit N-applicationwheatResults are reported from 57 N-fertilizer trials with spring cereals on various soils in SE Norway during the period 1991-95. Grain yields and nitrogen ...