The essential element that is crucial for the synthesis of proteins and other compounds in plants is nitrogen. Nitrogen is a key component of amino acids, which are the building blocks of proteins. It is also a part of nucleic acids, chlorophyll, and several other important molecules necessary for plant growth and development. Plants absorb nitrogen mainly in the form of nitrate (NO₃⁻) or ammonium (NH₄⁺) ions from the soil.
