01974naa a2200457 a 450000100080000000500110000800800410001910000160006024500790007626000090015530000140016452006070017865000170078565000160080265000190081865000220083765000220085965000130088165000220089465000260091665000210094265000220096365000260098565000210101165000130103265000290104565000290107465000240110365000260112765000120115365000270116565300170119265300130120965300110122265300110123365300240124470000270126870000160129570000200131177301850133116683432020-02-11       1998    bl uuuu     u00u1 u    #d1 aLEHMANN, J.  aNitrogen use of a mixed tree crop plantation with a leguminous cover crop.  c1998  ap. 45-53.  aStudy on two associated frut tree crops take up their N in comparison to a leguminous cover crop in an agroforestry system. Preliminar results showed the pueraria had the highest foliar N content followed by pupunha; cupuacu having less than the other two. One year after application, cupuacu took up more of the applied N in comparison to the total N uptake than pueraria and pupunha as seen from the high &15N values. The amount of 15N taken up in relation to dry matter equaled between the three species, since pueraria had a lot higher N contents. The other sampling dates showed the same tendency.  aagroforestry  acover crops  amixed cropping  amultiple cropping  anitrogen fixation  aPueraria  asoil conservation  atropical rain forests  aBactris Gasipaes  aCobertura do Solo  aConservação do Solo  aCultivo Multiplo  aCupuaçu  aFixação de Nitrogênio  aFloresta Tropical Úmida  aLeguminosa Tropical  aPueraria Phaseoloides  aPupunha  aTheobroma Grandiflorum  aAgrofloresta  aAmazonas  aBrasil  aManaus  aTropical leguminous1 aSILVA JUNIOR, J. P. da1 aGEBAUER, G.1 aSILVA, L. F. da  tIn: SHIFT PROJECT ENV 45/2. Water and nutrient fluxes as indicators for the stability of different land use systems on the terra firme near Manaus. Manaus: EMBRAPA-CPAA/BMBF, 1998.