scholarly journals Determination of Carbon and Nitrogen Stocks in Physical Fractions of Organic Matter in Anthropic (Terra Preta de Índio) and Non-Anthropic Soils in Central Amazonia

2021 ◽  
Author(s):  
Ricardo Soares ◽  
John E. L. Maddock ◽  
David V. B. Campos ◽  
Beata E. Madari ◽  
Pedro Luíz de O. A. Machado
Keyword(s):  
Organic Matter ◽  
Carbon And Nitrogen ◽  
Terra Preta ◽  
Central Amazonia ◽  
Terra Preta De Indio ◽  
Carbon And Nitrogen Stocks ◽  
Anthropic Soils ◽  
Terra Preta De Índio

scholarly journals Soil organic matter and fertility of anthropogenic dark earths (Terra Preta de Índio) in the Brazilian Amazon basin

2009 ◽  
Vol 33 (1) ◽  
pp. 85-93 ◽  
Author(s):  
Tony Jarbas Ferreira Cunha ◽  
Beata Emoke Madari ◽  
Luciano Pasqualoto Canellas ◽  
Lucedino Paixão Ribeiro ◽  
Vinicius de Melo Benites ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Amazon Basin ◽  
Exchange Capacity ◽  
Acid Fraction ◽  
Soil Fertility Management ◽  
Fraction H ◽  
Terra Preta ◽  
Terra Preta De Indio ◽  
Terra Preta De Índio

Fertility properties, total C (Ctot), and chemical soil organic matter fractions (fulvic acid fraction - FA, humic acid fraction - HA, humin fraction - H) of anthropogenic dark earths (Terra Preta de Índio) of the Amazon basin were compared with those of Ferralsols with no anthropogenic A horizon. Terra Preta soils had a higher fertility (pH: 5.1-5.4; Sum of bases, SB: 8.93-10.33 cmol c kg-1 , CEC: 17.2-17.5 cmol c kg-1 , V: 51-59 %, P: 116-291 mg kg-1) and Ctot (44.6-44.7 g kg-1) than adjacent Ferralsols (pH: 4.4; SB: 2.04 cmol c kg-1, CEC: 9.5 cmol c kg-1, V: 21 %, P 5 mg kg-1, C: 37.9 g kg-1). The C distribution among humic substance fractions (FA, HA, H) in Terra Preta soils was also different, as shown by the ratios HA:FA and EA/H (EA=HA+FA) (2.1-3.0 and 1.06-1.08 for Terra Preta and 1.2 and 0.72 for Ferralsols, respectively). While the cation exchange capacity (CEC), of Ferralsols correlated with FA (r = 0.97), the CEC of Terra Preta correlated with H (r = 0.82). The correlation of the fertility of Terra Preta with the highly stable soil organic matter fraction (H) is highly significant for the development of sustainable soil fertility management models in tropical ecosystems.

Variabilidade espacial de atributos físicos do solo em terra preta de índio sob cultivo de café conilon

2017 ◽  
Vol 12 (2) ◽  
pp. 260
Author(s):  
Pedro Cardoso Mota Júnior ◽  
Milton Cesar Costa Campos ◽  
Bruno Campos Mantovanelli ◽  
Uilson Franciscon ◽  
José Mauricio Da Cunha
Keyword(s):  
Terra Preta ◽  
Terra Preta De Indio ◽  
Terra Preta De Índio

A conversão de ecossistemas naturais em sistemas agrícolas provoca alterações significativas nos atributos do solo, associado ao crescente desmatamento na região amazônica influenciando a desestabilidade do ecossistema. Dessa forma, objetivou-se com este estudo avaliar a variabilidade espacial dos atributos físicos do solo em área de terra preta de índio (TPI) sob cultivo de café Conilon. Foi demarcado um grid amostral com dimensões de 88 × 64 m, com espaçamento regular de 8 m, perfazendo um total de 88 pontos amostrais. Foram coletadas amostras estruturadas e indeformadas nas camadas de 0,00-0,05; 0,05-0,10; 0,10-0,20 e 0,20-0,30 m. Realizaram-se as seguintes análises físicas: granulometria, estabilidade de agregados, carbono orgânico total (COT), estoque de carbono (EstC), macroporosidade (MaP), microporosidade (MiP), densidade do solo (Ds), porosidade total (PT), resistência do solo à penetração (RP) e umidade volumétrica (θ). Os resultados foram submetidos à análise estatística descritiva e geoestatística. As TPI’s apresentam grande potencial que podem subsidiar o aumento na produção, visto que estes solos apresentam excelente condição que se refere aos atributos físicos, sendo que nas camadas avaliadas estes não apresentaram nenhuma restrição e impedimento ao sistema radicular da cultura.

Carbon and nitrogen stocks and organic matter fractions in the topsoil of traditional and agrisilvicultural systems in the Southeast of Brazil

Soil Research ◽  
2021 ◽  
Author(s):  
Leidivan Almeida Frazão ◽  
Paulo Henrique Silveira Cardoso ◽  
Maria Nilfa Almeida Neta ◽  
Mauro Franco Castro Mota ◽  
Luana Larissa de Souza Almeida ◽  
...  
Keyword(s):  
Organic Matter ◽  
Carbon And Nitrogen ◽  
Organic Matter Fractions ◽  
Carbon And Nitrogen Stocks

scholarly journals Terra preta de índio: Commodification and Mythification of the Amazonian Dark Earths

2017 ◽  
Vol 26 (2) ◽  
pp. 136-143 ◽  
Author(s):  
Jens Soentgen ◽  
Klaus Hilbert ◽  
Carolin von Groote-Bidlingmaier ◽  
Gabriele Herzog-schröder ◽  
Eije Erich Pabst ◽  
...  
Keyword(s):  
Terra Preta ◽  
Amazonian Dark Earths ◽  
Terra Preta De Indio ◽  
Terra Preta De Índio

Anthropogenic Dark Earth in Northern Germany — The Nordic Analogue to terra preta de Índio in Amazonia

CATENA ◽  
2015 ◽  
Vol 132 ◽  
pp. 114-125 ◽  
Author(s):  
Katja Wiedner ◽  
Jens Schneeweiß ◽  
Michaela A. Dippold ◽  
Bruno Glaser
Keyword(s):  
Northern Germany ◽  
Terra Preta ◽  
Terra Preta De Indio ◽  
Terra Preta De Índio

Studies on the Carbon and Nitrogen Cycles in the soil. II. The Extraction of the Organic Matter of the Soil With Alkali

1930 ◽  
Vol 20 (3) ◽  
pp. 460-477 ◽  
Author(s):  
C. W. B. Arnold ◽  
H. J. Page
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Caustic Soda ◽  
Organic Manure ◽  
Humic Matter ◽  
Colour Intensity ◽  
Alkali Extraction ◽  
Carbon And Nitrogen ◽  
Manurial Treatment

The alkali extraction of the organic matter from the soils of certain plots of the classical permanent experiments on Barnfield and Broadbalk at Rothamsted, receiving respectively organic manure, artificial fertilisers and no manurial treatment, has been studied, together with a colorimetric examination of the extracts for the comparison of the content of humic matter.It is shown that, in spite of the different cultural and manurial treatments which the different plots have received, there is a marked similarity in the properties of the organic matter of these soils, with regard to its behaviour on extraction with cold and hot dilute caustic soda, and the colour intensity of the organic matter in the extracts.The methods used for the determination of organic carbon in the soils and their extracts are noted in an Appendix.The results discussed in this paper are further considered, along with those in the two next following Parts (III and IV), in Part V of this series, in their bearings on the origin of the humic matter of the soil.

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