Nitrogen is an important element which is the part of the cell and is required for the metabolism and phosphorus is also essential for photosynthesis. Magnesium is the element that is part of the chlorophyll which is also essential for the process of photosynthesis. The element sulfur which aids in the production of protein. Potassium also an element involved in photosynthesis and it also helps in the uptake of other nutrients. Some of the trace elements are also involved in the plant metabolism. Chlorine is involved in photosynthesis. Iron and Manganese assist in the manufacture of chlorophyll, Iron also helps in certain biochemical process. The copper is the element which helps in the metabolism of nitrogen.