Which of these is a macronutrient used by plants?
Nitrogen
∙ The macronutrients in plants include nitrogen, phosphorus and potassium (NPK). These elements are known as macronutrients because the plants require them in large quantities. This is why most plant fertilisers consist of NPK primarily.
∙ Apart from these, for proper functioning and metabolic activities of the plant, they also need many micronutrients such as zinc, chlorine, copper, boron, iron, magnesium, etc.