Importance of Pueraria phaseoloides for the N cycle in tropical tree production.
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The objective of this study was to analyse the biomass production and nutrition of pueraria as a cover crop grown in three different agroforestry systems (System 1: cupuacu, pupunha (peach palm), and seringueira (rubber tree); System 2: cupuacu, pupunha and urucu (annatto); System 3: cupuacu, seringueira, coco and citrus) at two levels of fertilisation, and its potential to contribute to the N stocks of the cropping system by biological N2 fixation, in Manaus-AM (Brasil). The larger nutrient uptake and return through litter indicated a rapid nutrient cycling at the plant-topsoil interface thus reducing leaching and keeping nutrients in a vailable form. The considerable amount of biologically fixed N2 was a relevant and important addition to the N pool of the cropping systems.
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Bixa orella, Urucu, Brasil, Amazonas, Manaus, Cover plants, Fertilizers application, Adubação, Bertholletia Excelsa, Bactris Gasipaes, Castanha do Para, Cocos Nucifera, Citrus Sinensis, Cobertura do Solo, Coco, Conservação do Solo, Cupuaçu, Fertilidade do Solo, Floresta Tropical Úmida, Fixação de Nitrogênio, Leguminosa, Laranja, Latossolo Amarelo, Pupunha, Pueraria Phaseoloides, Theobroma Grandiflorum, Ferralsols, legumes, nitrogen fixation, tropical rain forests, soil conservation, soil fertility