The time fertilizer use Each plant has very little nutritional requirements are different for each element. Some need a lot of nitrogen Some want more potassium Or in plants of the same species at different times, but you may need different nutrients, very little difference, as the plant leaves. You need a lot of nitrogen But the result is much like potassium, soil, etc. Each type has a different chemical composition. Some species may have high soil potassium. The sandy soils often have low potassium. For example , how to use fertilizer spreaders are many methods such as sprinkling a row drops into the hole, etc. Each method is effective and convenient as well.