Graduated phosphorus (P) application within a field gives a better P utilisation. Thus, areas with high soil P-values* (Pt) can be fertilised with less P. To achieve a good resolution, a soil sample density of 100 meters is recommended. Graduated application is most beneficial when Pt variation is high – often in undulating areas or where fields with differing cultivation histories are merged. A model for P-redistribution within the field is available in CropManager; a software programme for precision farming to send allocation maps di-rectly to farm machinery. The model is based on Pt, soil texture, predicted yield, and a norm for yield and P application. The model enables a more correct coverage of P-requirements in the field and thus a more uni-form crop. Further, the mapped Pt can be compared with maps of P-loss risk in landmand.dk, which high-lights areas in the field to take action to reduce soil-P loss risk. Thus, P fertiliser may be saved where it is not needed, while higher yields can be realised in areas with low Pt, which is good for farm economics and the environment. *The P-value is a Danish measurement. One unit Pt corelates to 25 kg P per ha in the topsoil (20 cm).