00583nam a2200205 a 450000100080000000500110000800800410001910000200006024500820008026000160016230000100017850000750018865300130026365300220027665300160029865300100031465300150032465300230033965300150036211174442004-06-23       2003    bl uuuu  m   00u1 u    #d1 aMASSIGNAM, A.M.  aQuantifyung nitrogen effects on crop growth processes in maize and sunflower.  a2003.c2003  a229f.  aTese (Doutorado em Filosofia) The University of Queensland, Australia.  aBiomassa  aCobertura de solo  aCrescimento  aMilho  aNitrogenio  aNutricao de planta  aRadiação