The element essential for the growth of plants is nitrogen. Nitrogen is a critical component of amino acids, which are the building blocks of proteins, and is also vital for the synthesis of nucleic acids like DNA and RNA. While nitrogen is abundant in the atmosphere, plants cannot use atmospheric nitrogen directly. Instead, they rely on soil microorganisms to convert nitrogen into forms they can absorb, such as nitrates. Adequate nitrogen levels in the soil are essential for healthy vegetative growth, as they promote lush foliage and overall vigor in plants.