00393nam a2200133 a 450000100080000000500110000800800410001910000170006024500770007726000610015465000150021565000100023065300190024019375152024-08-30       2012    bl uuuu     u00u1 u    #d1 aCONCENCO, G.  aPlantio diretobsolo coberto, invasoras ausentes.h[electronic resource]  aA Granja, Porto Alegre, ano 68, n. 766, out. 2012.c2012  ano-tillage  aweeds  aPlanta daninha