Roles of Nitrogen:

Plants get nitrogen in the form of nitrates. Nitrogen is a major component of proteins, hormones, chlorophyll, vitamins, and enzymes essential for plant life. Nitrogen metabolism is a major factor in stem and leaf growth. Too much nitrogen can delay flowering and fruiting.

Effects of the lack of nitrate ions:

Deficiencies of nitrogen can reduce yields, cause yellowing of the leaves, and stunt growth. Roles of Magnesium: Magnesium is a structural component of the chlorophyll molecule and is necessary for the functioning of plant enzymes to produce carbohydrates, sugars, and fats. It is used for fruit and nut formation and is essential for the germination of seeds. Effects of the lack of magnesium ions: Deficiency of magnesium causes yellowing and wilting of leaves