The importance of nitrogen (N): it is part of the composition of all amino acids and proteins, being also present in the chlorophyll molecule and in other pigments.
It acts in the formation and growth of the vegetative part, the flowering buds, regulates the plant cycle, increases productivity and improves the length, fiber resistance and micronaire index. Nitrogen (N) deficiency presents with the loss of the intensity of the green color throughout the plant, due to the reduction of chlorophyll.
The symptom appears, in the form of yellowing in the older leaves of the “basseiro”. The lack of nitrogen (N) reduces the growth speed of cotton, reduces the number and length of internodes and consequently reduces the number of vegetative and reproductive branches.