How is nitrogen essential?

Answer 1

Nitrogen is essential to growing plant and ammonia (NH4) is the main constituent of fertilisers. Most plants cannot make their own fertiliser but the legume family (peas,beans, clover) are very important because their roots contain nodules which contain Nitrogen fixing bacteria. In crop rotation systems these plants are ploughed back into the soil at the end of the growing season in order to improve soil fertility

Answer 2

Nitrogen is an essential element for all living organisms as it is a key component of amino acids, which are the building blocks of proteins. It is also a major component of nucleic acids like DNA and RNA. Nitrogen is vital for plant growth and is often a limiting nutrient in soil, which is why it is commonly used in fertilizers to promote plant health and growth.