Made available in DSpace on 2022-04-28T19:45:56Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-02-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Empresa Brasileira de Pesquisa Agropecuária; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); In sustainable tropical agriculture, grass-legume intercropping can increase productivity, enhance the nutritional quali...
Studying particle size distribution is important to understand soil structure and formation processes. This research aimed to assess the fractal dimension of soil texture in Indian Dark Earth (IDE) areas in southern Amazonas state under different land uses, as follows: two areas in the municipality of Apuí, one growing cocoa and the other coffee; a grassland area in the municipality of Manicoré; and a forest ar...
Made available in DSpace on 2019-10-03T17:31:18Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-11-01. Added 1 bitstream(s) on 2019-10-04T16:20:28Z : No. of bitstreams: 1 S0100-204X2018001101248.pdf: 516532 bytes, checksum: 0b69cbb8ec4a9d035e6fd21058fa0950 (MD5); Resumo: O objetivo deste trabalho foi avaliar a qualidade do solo e sua relação com a produtividade de soja (Glycine max) em sistema de integra...
Made available in DSpace on 2018-11-12T17:28:52Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-12-01. Added 1 bitstream(s) on 2018-11-12T17:37:01Z : No. of bitstreams: 1 S1983-40632016000400391.pdf: 389987 bytes, checksum: 4239cfcd249a22216ff629cca6eaf5c6 (MD5); RESUMO Metais pesados são naturalmente encontrados em solos, mas suas concentrações podem ser aumentadas por meio de ações antrópicas. Objetivo...
Sequential extraction or chemical fractionation of heavy metals allows inferences to be made about their origin, occurrence, bioavailability, toxic potential and environmental contamination. Thus, the present study aimed to assess the distribution of Cu, Mn, Ni, Pb and Zn among the different soil fractions and landscape compartments of a yellow latosol cultivated with vegetables. Soil samples were collected fro...
Indian Black Earths (IBEs) are distributed throughout the Amazon. They are characterized by their high chemical fertility and agricultural potential. IBEs have high organic carbon, favouring the improvement of soil structure. This work aimed to evaluate the aggregates and organic carbon (OC) spatial variability in different IBEs in southern Amazonas. We evaluated the organic carbon spatial variability, mean wei...