Appraisal of the 15 N-isotope dilution and 15 N natural abundance methods for quantifying nitrogen fixation by flood-tolerant green manure legumes. IJMF [Internet]. 2021 Apr. 29 [cited 2026 Mar. 23];9(1):1-5. Available from: https://ijpp.org/journal/index.php/ijmf/article/view/91