02067nam a2200457 a 450000100080000000500110000800800410001910000190006024501070007926001280018630000120031452007350032665000170106165000120107865000220109065000130111265000220112565000260114765000150117365000210118865000250120965000180123465000210125265000220127365000260129565000210132165000130134265000240135565000290137965000150140865000260142365000120144965000270146165300170148865300170150565300280152265300170155065300100156770000160157770000160159316700392015-06-17       2000    bl uuuu     u00u1 u    #d1 aMOTA, M. do S.  aCover crop and fertilization effects on nutrient dynamics in fruit tree cropping inthe central Amazon.  aIn: GERMAN-BRAZILIAN WORKSHOP ON NEOTROPICAL ECOSYSTEMS, 2000, Hamburg. Programa and abstracts... Hamburg: Universityc2000  ap. 179.  aStudies on the effect of fertilization on soil acidity and pH dynamics in a mixed tree croping system with castanha-do-Para (Brazil nut), cupuacu, pupunha (peach palm), urucu (annatto) and pueraria.Fertilizer at four different levels (30%, 100%+P and 30%-N-lime, of the recommended fertilization, Embrapa Amazonia Ocidental, Manaus-AM, Brasil) was applied. Fertilization at a level of 30%-N-lime produced highest acidity compared to the other levels of fertilization. The effect of fertilization on soil acidity was restricted to a depth of 0 cm-5 cm. Pueraria and urucu presented the highest acidity at all. depths. The effec of soil pH was opposite to acidity, highest for cupuacu and pupunha and lowest for urucu at all depths.  aagroforestry  alegumes  amultiple cropping  aPueraria  asoil conservation  atropical rain forests  aAdubação  aBactris Gasipaes  aBertholletia Excelsa  aBixa Orellana  aCastanha do Para  aCobertura do Solo  aConservação do Solo  aCultivo Multiplo  aCupuaçu  aFertilidade do Solo  aFloresta Tropical Úmida  aLeguminosa  aPueraria Phaseoloides  aPupunha  aTheobroma Grandiflorum  aAgrofloresta  aCover plants  aFertilizers application  aSoil fertily  aUrucu1 aLEHMANN, J.1 aSCHROTH, G.