Plants require nutrients or elements obtained from the soil for good growth and healthy development. These elements or nutrients are classified into two main groups which are: Macro-Nutrients: Macro-nutrients are mineral elements or nutrients required by crops in large quantities. Examples of macro-nutrients are nitrogen, phosphorus, potassium, magnesium, calcium and sulphur. Micro Nutrients or Trace Elements: Micro nutrients are mineral elements or nutrients required by crops in small quantities. Examples of micro-nutrients are zinc, copper, boron, molybdenum, iron, chlorine and manganese. The functions and deficiency symptoms of these elements or nutrients are summarised below: a) Nitrogen Functions It aids plants’ growth and reproduction because it is an essential constituent of…