Nitrogen fertilizer is a type of fertilizer that provides essential nitrogen to plants, which is crucial for their growth and development. Nitrogen is a key component of amino acids, proteins, and chlorophyll, helping plants produce energy and grow strong. Common forms of nitrogen fertilizer include urea, ammonium nitrate, and calcium nitrate. Farmers often apply nitrogen fertilizer to improve crop yields and enhance soil fertility. It can be used in various agricultural practices, including crop rotation and precision farming. Proper application is important, as excessive use can lead to environmental issues, such as water pollution and soil degradation.