00856nam a2200265 a 450000100080000000500110000800800410001910000190006024501110007926001750019050000370036565000200040265000140042265000170043665000120045365000140046565000090047965300150048865300110050365300110051465300110052565300120053665300230054870000190057114850352015-10-22       2001    bl uuuu     u00u1 u    #d1 aSANTANA, D. P.  aThe distribution and nature of soils with low phosphorus in the Brazilian savannas.h[electronic resource]  aIn: WORKSHOP ON IMPROVING PHOSPHORUS ACQUISITION EFFICIENCY IN MARGINAL SOILS, 1999, Sete Lagoas. Proceedings... Sete Lagoas: Embrapa Milho e Sorgo, 2001. p. 27-34.c2001  aEditado por Robert E. Schaffert.  afarming systems  anutrients  asoil quality  aCerrado  aQualidade  aSolo  aNutrientes  aRegiao  aRegion  aSavana  aSavanna  aSistemas agricolas1 aSANS, L. M. A.