The amounts of each ingredient will be different for various products, but the ratios needed by your lawn grass will remain basically the same over time. The best way and easiest way to distribute fertilizer is with a hand held spreader for small areas and a lawn drop spreader for larger areas. This evenly distributes the coverage needed without the overlapping that may occur by hand throwing or spraying. Many larger lawns are fertilized with a push broadcast spreader such as the one pictured at right. You should calibrate your spreader using the manufactures instructions included in new spreaders.
Convenient applicators are available to make it simple and easy.
Both lawn and general plant formulas are produced. Most of the lawn formulas have higher Nitrogen percentages. With a water soluble fertilizer it is much harder to cause damage to your plants by burning. Several companies make quality products of a soluble fertilizer. Even distribution is the main goal you should work toward in lawn fertilization.