Fig. 1. Average NO3N measured in soil at harvest. Treatments: N150150 kg ha1 of NH4NO3N; SC1515 Mg ha1 dry matter paper mill soil conditioner; SC15N7515 Mg ha1 dry matter paper mill soil conditioner and 75 kg ha1 of NH4NO3N; SC2525 Mg ha1 dry matter paper mill soil conditioner.