নাইট্ৰিক এছিডনাইট্ৰ’জেন
নাইট্ৰীকৰণ (Assamese)
1. Nitrification is the biological oxidation of ammonia to nitrate via the intermediary nitrite. Nitrification is an important step in the nitrogen cycle in soil. The process of complete nitrification may... from wikipedia.org