02246naa a2200289 a 450000100080000000500110000800800410001910000250006024500790008526000090016450001010017352012840027465000190155865000240157765000220160165000230162365300210164665300330166765300290170065300250172965300250175470000230177970000250180270000190182770000200184677300900186611221102019-08-02       2008    bl uuuu     u00u1 u    #d1 aCARDOSO FILHO, J. A.  aMycorrhizal dependency of mangaba tree under increasing phosphorus levels.  c2008  aTítulo em português: Dependência micorrízica de mangabeira  em doses crescentes de fósforo.  aThe objective of this study was to evaluate the mycorrhizal dependency of mangaba tree (Hancornia speciosa) plantlets, under increasing levels of phosphorus fertilization. The experimental design was completely randomized in a 4´5 factorial arrangement with three mycorrhizal fungi inocula ? Gigaspora margarita, Glomus etunicatum, or a pool of native mycorrhizal fungi (Acaulospora longula, Glomus clarum, Gigaspora albida, Paraglomus sp.) ?, and a nonmycorrhizal control, in combination with five levels of phosphorus applied to the substrate: 0, 25, 50, 75, and 100 mg kg-1. After 180 days of growth, plantlets with inoculation of native mycorrhizal pool produced more shoot and root dry biomass and had higher shoot phosphorus content and accumulation. The noninoculated control showed the lowest values, independently of the phosphorus level. The highest relative mycorrhizal dependency occurred with the inoculation of native mycorrhizal fungi. Plants with mycorrhizal fungi did not respond to phosphorus addition above 50 mg kg-1. Mangaba tree is highly dependent on mycorrhiza, but the degree of dependency varies according to phosphorus levels and fungal inocula. In general, mangaba tree is more responsive to mycorrhizal fungi inoculation than to phosphorus addition.  abiofertilizers  aGigaspora Margarita  aGlomus Etunicatum  aHancornia Speciosa  abiofertilizantes  afungos micorrízicos nativos  anative mycorrhizal fungi  anutrição fosfatada  aphosphorus nutrition1 aLEMOS, E. E. P. de1 aSANTOS, T. M. C. dos1 aCAETANO, L. C.1 aNOGUEIRA, M. A.  tPesquisa Agropecuária Brasileira, Brasília, DFgv. 43, n. 7, p. 887-892, jul. 2008.