Molecular composition of several soil organic matter fractions from anthropogenic black soils (Terra Preta de Índio) in Amazonia — A pyrolysis-GC/MS study

Geoderma ◽  
2017 ◽  
Vol 288 ◽  
pp. 154-165 ◽  
Author(s):  
Judith Schellekens ◽  
Taís Almeida-Santos ◽  
Rodrigo Santana Macedo ◽  
Peter Buurman ◽  
Thomas W. Kuyper ◽  
...  
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 ◽  
...  

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.


2004 ◽  
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pp. 950 ◽  
Author(s):  
Marietta E. Echeverría ◽  
Daniel Markewitz ◽  
Lawrence A. Morris ◽  
Ronald L. Hendrick

2011 ◽  
Vol 71 (2) ◽  
pp. 283-292 ◽  
Author(s):  
Francisco Matus ◽  
Claudia Hidalgo ◽  
Carlos Monreal ◽  
Isabel Estrada ◽  
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2010 ◽  
Vol 42 (11) ◽  
pp. 1991-1996 ◽  
Author(s):  
Alain F. Plante ◽  
Richard T. Conant ◽  
Jenny Carlson ◽  
Rebecca Greenwood ◽  
Jeremy M. Shulman ◽  
...  

2018 ◽  
Vol 34 (2) ◽  
pp. 187-196 ◽  
Author(s):  
M. Pulido-Moncada ◽  
Z. Lozano ◽  
M. Delgado ◽  
M. Dumon ◽  
E. Van Ranst ◽  
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2020 ◽  
Vol 31 (5) ◽  
pp. 632-645 ◽  
Author(s):  
Yufu Jia ◽  
Yakov Kuzyakov ◽  
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Wenbing Tan ◽  
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...  

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