It is responsible for plant growth, acting directly on photosynthesis, is a constituent part of chlorophyll, vitamins, carbohydrates and proteins.
It is responsible for the dark green color of the leaves. It plays a role in the development of the root system.
Deficiency – Initially, the old leaves have a light green color, which become yellowish and have small reddish spots along the blade. Subsequently, the spots cover the entire limb, causing a generalized reddening.