01815nam a2200361 a 450000100080000000500110000800800410001910000210006024500870008126000430016830000100021149000400022152008350026165000240109665000170112065000190113765000190115665000150117565000090119065000240119965000190122365000130124265000170125565000180127265000260129065000180131665000200133465000090135465000200136365300170138365300260140070000270142615681712009-10-28       2003    bl uuuu     u0uu1 u    #d1 aMENDES, I. de C.  aMicrorganismos e disponibilidade de fósforo (P) nos solosbuma análise crítica.  aPlanaltina, DF: Embrapa Cerradosc2003  a26 p.  a(Embrapa Cerrados. Documentos, 85).  aABSTRACT: Cerrado soils are extremely old, highly weathered and depleted in essential nutrients, especially P. For this reason, the addition of P fertilizers is mandatory in order to obtain economical yields of annual crops. Soil microorganisms play a key role in the P cycle. The P immobilized in the soil microbial biomass acts as reservoir of this element. Soil microorganisms also produce enzymes that act in the P mineralization, participate in the solubilization of inorganic phosphorus and are able to form symbiosis with plants, denominated mycorrizha, enhancing the uptake of this element. In this review we discuss the results of several studies evaluating the use of soil microorganisms to increase P availability in soils, some of the difficulties related to field inoculation and the perspectives for future research.  ainoculation methods  amicrobiology  amicroorganisms  amineralization  aphosphorus  asoil  aSoil microorganisms  asolubilization  aFósforo  aInoculação  aMicrobiologia  aMicrobiologia do Solo  aMicrorganismo  aMineralização  aSolo  aSolubilização  aMicrobilogia  aMicrorganismos - Solo1 aREIS JUNIOR, F. B. dos