The main nutrients in plant nutrition and explain their role in plants life.

The main plant nutrients are: Carbon, Nitrogen, Oxygen, Phosphorus, and Sulfur.

Plants get Nitrogen, Phosphorus and Sulfur from their roots and Carbon for their leaves (Photosynthesis process). Nitrogen and Phosphorus are important for the growth and survival of the plants. In the processes of photosynthesis plants use the sunlight to change the Ca and H2O into sugars and starches and all because these sugars and starches are the plants food.

Nitrogen (N) is on the pigment of chlorophyll, and this pigment is responsible for the process of photosynthesis. It also helps plants to grow faster and increasing fruit productivity.

Phosphorus (P) just like Nitrogen, phosphorus is very important in the process of photosynthesis. It stimulates blooming and root growth and also it helps in the process formation of sugars and starches.

Sulfur (S) helps in the formation of chlorophyll, it also helps plant in the protection from the cold; it stimulates the activity and development of enzymes and vitamins. (Royal Horticultural Society )

When there is a lack of Nitrogen in plants than you will see that the leaves are a bit yellowish with some pink tints. Nitrogen is a part of chlorophyll so when there is a lack of nitrogen in the plant, the leaves will be yellow and this is that causes the falling of the leaves in the spring.

As it stimulates blooming and root growth the lack of phosphorus in plants are that plants will grow very slowly and yellow leaves and leaf tips look burnt.

Yellow leaves are a characteristic of sulfur or nitrogen deficiency so it is a bit hard to distinguish between them. But there is a difference between these two. When there is a nitrogen deficiency the first leaves to turn yellow are the older leaves but when there is a sulfur deficiency the new leaves turn yellow first. (Royal Horticultural Society )

(Nutrient deficiency in plants)