Souto, Sebastião Manhães, and Johanna Dobereiner. “Seasonal Variation of Dinitrogen Fixation and Assimilation of Nitrate in Tropical Forage Grasses”. Pesquisa Agropecuaria Brasileira 20, no. 3 (April 17, 2014): 319–334. Accessed November 27, 2025. https://apct.sede.embrapa.br/pab/article/view/15126.