Influence of External Nitrogen on Nitrogenase Enzyme Activity and Auxin Production in Herbaspirillum seropedicae (Z78). tlsr [Internet]. 2015 Jul. 31 [cited 2024 Dec. 23];26(1):101–110. Available from: https://ejournal.usm.my/tlsr/article/view/tlsr_vol26-no-1-2015_9