Fecha de publicación: 02/07/2003 Fuente: Wipo "precision agriculture" PROBLEM TO BE SOLVED: To provide a method for preventing excess and deficiency of amount of fertilizer and preventive agents, easily improving the efficiency of the fertilizer and the preventive agents and increasing crop yields, wherein the method can be easily applied for labor saving and the like by automatization of fertilizer amount and preventive agents amount.SOLUTION: This precision agricultural method comprises automatically preparing a crop map by detecting cropping positions and the crop yield at the positions, wherein the cropped grain is dispersed by a leveling disk so as to be uniformly dispersed in a cropped grain storage, the driving torque of the leveling disk is detected and thereby crop yield is calculated.COPYRIGHT: (C)2003,JPO