Program to calculate the composition template fertilizers and fertilizer mixtures based on a formula that includes the macronutrients N, P and K, are calculated to produce the weight of my compost number 3 is urea, DAP and MOP included. soil (Filler) (in case you want to use) can be used to calculate the amount of arable land. And to calculate the volume. Can enter the soil at planting compost to calculate the value of a specific nutrient deficiencies also exist. Return can be calculated by entering the amount of weight that each parent fertilizer together constitute what fertilizer formulation. The fertilizer industry inspection standards that meet the criteria of a given fertilizer. It can extract the proper nutrients for plants of economic importance, which has compiled a database of recommendations to the Department of Agriculture's fertilizer plant. Or other government agencies. Entered on a database on the server.