00749naa a2200253 a 450000100080000000500110000800800410001910000220006024501290008226000090021165000220022065000220024265000240026465000260028865000120031465000200032665300080034665300080035465300080036265300360037065300120040670000180041877300590043616069651995-06-27       1987    bl ---       0--  u    #d1 aMIRANDA, C. H. B.  aEstimation of biological nitrogen fixation associated with 11 ecotypes of Panicum maximum grown in nitrogen-15-labeled soil.  c1987  anitrogen fixation  atracer techniques  aBrachiaria Radicans  aDiluição Isotópica  aMétodo  aPanicum Maximum  a15N  aBNF  aFBN  aFixacao biologica de nitrogenio  aUAPNPBS1 aBODDEY, R. M.  tAgronomy Journal, Madisongv.79, n.3, p.558-563, 1987.