ABSTRACT
Precision agriculture (PA) attempts to vary efficiently the management of farming in a manner that accounts for the inherent spatial variation of the land. For example, when deciding on the quantity of fertilizer to apply across a farm, a farmer might consider the amount of nutrient that is available from other sources, the soil type, the efficiency of nutrient uptake by the crop and whether other factors such as weather or disease are likely to limit the yield. If these factors vary within the farm then the optimal nutrient additions are likely to vary. If farmers know accurately the spatial variation of such factors then they might use PA techniques to decide how to manage their land locally.
