The fertilizer formula is based on the nutrient formula N, P, and K. The results show the weight of three fertilizers, Urea, DAP and MOP. Filler (if required) can be used to calculate the amount of land use. And the calculation is volumetric. The soil analysis of the soil can be used to calculate the nutrient mix of the specific nutrient deficiency. It can be calculated back by entering the weight of the mother each fertilizer that, when combined, is composed of fertilizers. Include a check against the industry standard fertilizer that passes the specified criteria of the specified fertilizer. In addition, the optimum nutrient values for important economic crops can be extracted from the database, compiled from the Department of Agriculture's Fertilizer Recommendations. Or other government agencies. To put on the database on the server.