01179nam a2200205 a 450000100080000000500110000800800410001902200140006010000210007424500950009526000430019030000100023349000410024350000200028452005750030465000220087965000290090170000270093070000160095719252012018-04-16       2010    bl uuuu     u0uu1 u    #d  a2176-50811 aMENDES, I. de C.  a20 perguntas e respostas sobre fixação biológica de nitrogênio.h[electronic resource]  aPlanaltina, DF: Embrapa Cerradosc2010  a19 p.  a(Embrapa Cerrados. Documentos, 281).  aVersão online.  aAmong the mineral nutrients essential to plants, nitrogen (N) is the most expensive, energy consuming and, potentially, the most pollutant, generally being the most limiting to the vegetal production. Nevertheless, in Brazil, the use of nitrogen ins much lower when compared to other countries, partially due to the search and utilization of agricultural production systems based on the biological nitrogen fixation. This document offers basic and actualized information about this important biological process, its benefits and utilization in the Brazilian agriculture.  aNitrogen fixation  aFixação de nitrogênio1 aREIS JUNIOR, F. B. dos1 aHUNGRIA, M.