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| Provedor de dados: |
Agronomy
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| País: |
Brazil
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| Título: |
Carbon, nitrogen and natural abundance of δ13C e δ15N of light-fraction organic matter under no-tillage and crop-livestock integration systems - doi: 10.4025/actasciagron.v34i4.15061
Carbon, nitrogen and natural abundance of δ13C e δ15N of light-fraction organic matter under no-tillage and crop-livestock integration systems - doi: 10.4025/actasciagron.v34i4.15061
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| Autores: |
Loss, Arcângelo; Universidade Federal Rural do Rio de Janeiro
Pereira, Marcos Gervasio; Universidade Federal Rural do Rio de Janeiro
Perin, Adriano; Instituto Federal de Educação Ciência e Tecnologia Goiano
Beutler, Sidinei Julio; Universidade Federal Rural do Rio de Janeiro
Anjos, Lúcia Helena Cunha dos; Universidade Federal Rural do Rio de Janeiro
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| Data: |
2012-09-06
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| Ano: |
2012
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| Palavras-chave: |
Cerrado
Brachiaria
Plant residues
Isotopic composition
Physical indicators Cerrado
Brachiaria
Plant residues
Isotopic composition
Physical indicators
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| Resumo: |
This study aimed to quantify the light organic matter mass (LOM) in water, free light fraction (FLF) of soil organic matter (SOM) and carbon (C), nitrogen (N) contents and natural abundance of δ13C e δ15N contained in the mass of LOM, C and N in the FLF in land use systems in the Cerrado region of Goiás State, Brazil. Were evaluated a crop-livestock integration system - CLIS (corn+brachiaria/bean/cotton/soybean) and no-tillage system - NTS (sunflower/millet/soybean/corn). The vegetal coverage of natural Cerrado, adjacent to NTS and CLIS, was considered as the original soil condition. Soil samples were collected at depths of 0.0-5.0 and 5.0-10.0 cm in full random experimental design. The CLIS showed the greatest mass and levels of C-LOM (5-10 cm), and too greatest mass and levels of C and N of FLF (0-10 cm) when compared with the NTS. Regarding the Cerrado, the CLIS showed higher values for N-LOM and 1δ15N-LOM (0-5 cm), C and N of FLF (0-5 cm). Through physical indicators LOM and FLF, it was possible to infer that the CLIS increased the SOM fractions when compared to the NTS.
This study aimed to quantify the light organic matter mass (LOM) in water, free light fraction (FLF) of soil organic matter (SOM) and carbon (C), nitrogen (N) contents and natural abundance of δ13C e δ15N contained in the mass of LOM, C and N in the FLF in land use systems in the Cerrado region of Goiás State, Brazil. Were evaluated a crop-livestock integration system - CLIS (corn+brachiaria/bean/cotton/soybean) and no-tillage system - NTS (sunflower/millet/soybean/corn). The vegetal coverage of natural Cerrado, adjacent to NTS and CLIS, was considered as the original soil condition. Soil samples were collected at depths of 0.0-5.0 and 5.0-10.0 cm in full random experimental design. The CLIS showed the greatest mass and levels of C-LOM (5-10 cm), and too greatest mass and levels of C and N of FLF (0-10 cm) when compared with the NTS. Regarding the Cerrado, the CLIS showed higher values for N-LOM and 1δ15N-LOM (0-5 cm), C and N of FLF (0-5 cm). Through physical indicators LOM and FLF, it was possible to infer that the CLIS increased the SOM fractions when compared to the NTS.
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| Idioma: |
Inglês
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| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15061
10.4025/actasciagron.v34i4.15061
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| Editor: |
Universidade Estadual de Maringá
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| Formato: |
application/pdf
application/pdf
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| Fonte: |
Acta Scientiarum. Agronomy; v. 34, n. 4 (2012); 465-472
Acta Scientiarum. Agronomy; v. 34, n. 4 (2012); 465-472
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| Direitos: |
DECLARATION OF ORIGINALITY AND CESSATION OF COPYRIGHTI Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal. I also declare that once published in the Acta Scientiarum. Agronomy, a publication of the Universidade Estadual de Maringá, it will not be submitted by me or by any co-author to any other scientific communication mean. In my name and in the name of co-authors, I shall cede the copyright of the above mentioned article to the Universidade Estadual de Maringá and I declare that I know that the non-observance of this norm may make me liable for the penalties contemplated in the Law for the Protection of Authors’ Rights (Act 9609 of the 19th February 1998).
DECLARACIÓN DE ORIGINALIDAD Y CESIÓN DE DERECHOS DE AUTOR Declaro que el presente artículo es original, no fue sometido a la publicación en cualquier otro periódico nacional o internacional, sea en parte o en su totalidad. Declaro, aun, que una vez publicado en la revista Acta Scientiarum. Agronomy, editado por la Universidad Estadual de Maringá, éste jamás será sometido por mí o por cualquier uno de los demás coautores a cualquier otro periódico. A través de este instrumento, en mi nombre y en nombre de los demás coautores, por ventura existentes, cedo los derechos de autor del referido artículo a la Universidad Estadual de Maringá y declaro estar informado de que la no observancia de este compromiso someterá al infractor las sanciones y penas previstas en la Ley de Protección de Derechos de Autor (Nº9609, de 19/02/98).
DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAISDeclaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Agronomy, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).
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