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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agropecuária Oeste. Para informações adicionais entre em contato com cpao.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Agrossilvipastoril. |
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Data corrente: |
15/10/2018 |
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Data da última atualização: |
19/02/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUZA, L. H. C.; MATOS, E. da S.; MAGALHÃES, C. A. de S.; TORRE, E. R. de la; LAMAS, F. M.; LAL, R. |
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Afiliação: |
LETÍCIA HELENA CAMPOS SOUZA, UNIVERSIDADE FEDERAL DE MATO GROSSO, CUIABÁ, MT; EDUARDO DA SILVA MATOS, CPAMT; CIRO AUGUSTO DE SOUZA MAGALHAES, CPAMT; ÉLIO R. de la TORRE, INSTITUTO MATOGROSSENSE DO ALGODÃO, PRIMAVERA DO LESTE, MT; FERNANDO MENDES LAMAS, CPAO; RATTAN LAL, OHIO STATE UNIVERSITY, COLUMBUS, OHIO. |
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Título: |
Soil carbon and nitrogen stocks and physical properties under no-till and conventional tillage cotton-based system in the Brazilian Cerrado. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Land Degradation & Development, v. 29, n. 10, p. 3405-3412, Oct. 2018. |
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DOI: |
10.1002/ldr.3105 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to investigate soil C and N stocks and soil physical properties under a cotton (Gossypium hirsutum) based system using no?till (NT) and conventional tillage (CT). The experiment was established as a randomized block design with four replications of six treatments as follows: [NT1], NT system with crop rotation of cotton/soybean (Glycine max)/maize (Zea mays) + brachiaria (Brachiaria ruziziensis); [NT2], NT system with crop rotation of soybean/maize + brachiaria/cotton; [NT3], NT system with crop rotation of maize + brachiaria/cotton/soybean; [CR1], CT with annual rotation (soybean/cotton); and [CR2], CT with biannual rotation (soybean/soybean/ cotton) and [CT1] CT with cotton monoculture. An area of native Cerrado vegetation was used as the reference or baseline. Soil samples were obtained from 0? to 5?, 5? to 10?, 10? to 20?, 20? to 30?, 30? to 60?, and 60? to 100?cm depths. After 9 years of cultivation, soil under NT systems contained higher C concentrations than those under CT (p < 0.05); however, significant differences were restricted to the 0? to 5?cm layer. Stocks of C and N in the 0? to 30?cm depth ranged from 36.2 to 39.8 Mg ha?1 and from 2.00 to 2.22 Mg ha?1, respectively. Despite higher C concentration in the upper layer, NT treatments (NT1, NT2, and NT3) had soil C stocks similar to those of CR1 and CT1. In comparison with Cerrado, C stocks in soil under all cultivated treatments were reduced by 27% in the top 1?m depth, which represents a C loss of 35 Mg C ha?1 upon conversion from the Cerrado to cultivated land. The least soil bulk density among all treatments was observed for NT1. However, there were no differences in macroporosity and microporosity among NT and CT systems even after 9 years of cultivation. In comparison with CT, principal benefits of NT systems for C sequestration and soil physical improvements are restricted to the surface layer. MenosThe aim of this study was to investigate soil C and N stocks and soil physical properties under a cotton (Gossypium hirsutum) based system using no?till (NT) and conventional tillage (CT). The experiment was established as a randomized block design with four replications of six treatments as follows: [NT1], NT system with crop rotation of cotton/soybean (Glycine max)/maize (Zea mays) + brachiaria (Brachiaria ruziziensis); [NT2], NT system with crop rotation of soybean/maize + brachiaria/cotton; [NT3], NT system with crop rotation of maize + brachiaria/cotton/soybean; [CR1], CT with annual rotation (soybean/cotton); and [CR2], CT with biannual rotation (soybean/soybean/ cotton) and [CT1] CT with cotton monoculture. An area of native Cerrado vegetation was used as the reference or baseline. Soil samples were obtained from 0? to 5?, 5? to 10?, 10? to 20?, 20? to 30?, 30? to 60?, and 60? to 100?cm depths. After 9 years of cultivation, soil under NT systems contained higher C concentrations than those under CT (p < 0.05); however, significant differences were restricted to the 0? to 5?cm layer. Stocks of C and N in the 0? to 30?cm depth ranged from 36.2 to 39.8 Mg ha?1 and from 2.00 to 2.22 Mg ha?1, respectively. Despite higher C concentration in the upper layer, NT treatments (NT1, NT2, and NT3) had soil C stocks similar to those of CR1 and CT1. In comparison with Cerrado, C stocks in soil under all cultivated treatments were reduced by 27% in the top 1?m depth, which represents... Mostrar Tudo |
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Thesagro: |
Algodão; Carbono; Estoque; Manejo do Solo; Nitrogênio; Plantio Direto; Solo Tropical. |
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Thesaurus Nal: |
Carbon; Cotton; Nitrogen. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
LEADER 02844naa a2200313 a 4500
001 2106103
005 2019-02-19
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1002/ldr.3105$2DOI
100 1 $aSOUZA, L. H. C.
245 $aSoil carbon and nitrogen stocks and physical properties under no-till and conventional tillage cotton-based system in the Brazilian Cerrado.$h[electronic resource]
260 $c2018
520 $aThe aim of this study was to investigate soil C and N stocks and soil physical properties under a cotton (Gossypium hirsutum) based system using no?till (NT) and conventional tillage (CT). The experiment was established as a randomized block design with four replications of six treatments as follows: [NT1], NT system with crop rotation of cotton/soybean (Glycine max)/maize (Zea mays) + brachiaria (Brachiaria ruziziensis); [NT2], NT system with crop rotation of soybean/maize + brachiaria/cotton; [NT3], NT system with crop rotation of maize + brachiaria/cotton/soybean; [CR1], CT with annual rotation (soybean/cotton); and [CR2], CT with biannual rotation (soybean/soybean/ cotton) and [CT1] CT with cotton monoculture. An area of native Cerrado vegetation was used as the reference or baseline. Soil samples were obtained from 0? to 5?, 5? to 10?, 10? to 20?, 20? to 30?, 30? to 60?, and 60? to 100?cm depths. After 9 years of cultivation, soil under NT systems contained higher C concentrations than those under CT (p < 0.05); however, significant differences were restricted to the 0? to 5?cm layer. Stocks of C and N in the 0? to 30?cm depth ranged from 36.2 to 39.8 Mg ha?1 and from 2.00 to 2.22 Mg ha?1, respectively. Despite higher C concentration in the upper layer, NT treatments (NT1, NT2, and NT3) had soil C stocks similar to those of CR1 and CT1. In comparison with Cerrado, C stocks in soil under all cultivated treatments were reduced by 27% in the top 1?m depth, which represents a C loss of 35 Mg C ha?1 upon conversion from the Cerrado to cultivated land. The least soil bulk density among all treatments was observed for NT1. However, there were no differences in macroporosity and microporosity among NT and CT systems even after 9 years of cultivation. In comparison with CT, principal benefits of NT systems for C sequestration and soil physical improvements are restricted to the surface layer.
650 $aCarbon
650 $aCotton
650 $aNitrogen
650 $aAlgodão
650 $aCarbono
650 $aEstoque
650 $aManejo do Solo
650 $aNitrogênio
650 $aPlantio Direto
650 $aSolo Tropical
700 1 $aMATOS, E. da S.
700 1 $aMAGALHÃES, C. A. de S.
700 1 $aTORRE, E. R. de la
700 1 $aLAMAS, F. M.
700 1 $aLAL, R.
773 $tLand Degradation & Development$gv. 29, n. 10, p. 3405-3412, Oct. 2018.
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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
23/08/1996 |
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Data da última atualização: |
08/05/2019 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
PEREIRA, J. A.; CAMPELO, G. J. de A.; RIBEIRO, V. Q. |
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Afiliação: |
EMBRAPA-UEPAE de Teresina. |
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Título: |
Comportamento de genotipos de arroz de sequeiro no estado do Piaui. |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
In: SEMINARIO DE PESQUISA AGROPECUARIA DO PIAUI, 6., 1990, Teresina. Anais... Teresina: EMBRAPA-UEPAE de Teresina, 1992. p. 95-103. |
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Série: |
(EMBRAPA-UEPAE de Teresina. Documentos, 11) |
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Idioma: |
Português |
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Conteúdo: |
Avaliou-se o comportametno de 25 genotipos de arroz de sequeiro (Oryzasativa L.) oriundos do Programa Nacional de Pesquisa de Arroz, visandoo rendimento e qualidade de graos. O trabalho foi desenvolvido nos municipios de Teresina, Angical do Piaui e Urucui, estado do Piaui, nos anos de 1989 e 1990. O delineamento experimental foi de blocos casualizados, com 20 tratamentos e quatro repeticoes. Estudaram-se os aspectosde ciclo vegetativo, altura de plantas, rendimento de graos, peso de 100 graos, rendimento de engenho, centro branco, dimensao e classe de graos. Em termos de rendimento de graos, os melhores resultados foram alcancados pelos genotipos Rio Paranaiba e Araguaia, seguidos pela testemunha IAC 47. Destacarm-se em qualidade de graos, o CNA 5342 e o CNA6723, ambos apresentando graos pertencentes a classe longo fino, preferida pela grande maioria da populacao brasileira. |
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Palavras-Chave: |
Brasil; Piaui. |
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Thesagro: |
Arroz; Genótipo; Oryza Sativa; Qualidade; Rendimento. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/197112/1/Pesquisa-95-103.pdf
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Marc: |
LEADER 01599nam a2200229 a 4500
001 1053358
005 2019-05-08
008 1992 bl uuuu u00u1 u #d
100 1 $aPEREIRA, J. A.
245 $aComportamento de genotipos de arroz de sequeiro no estado do Piaui.
260 $aIn: SEMINARIO DE PESQUISA AGROPECUARIA DO PIAUI, 6., 1990, Teresina. Anais... Teresina: EMBRAPA-UEPAE de Teresina, 1992. p. 95-103.$c1992
490 $a(EMBRAPA-UEPAE de Teresina. Documentos, 11)
520 $aAvaliou-se o comportametno de 25 genotipos de arroz de sequeiro (Oryzasativa L.) oriundos do Programa Nacional de Pesquisa de Arroz, visandoo rendimento e qualidade de graos. O trabalho foi desenvolvido nos municipios de Teresina, Angical do Piaui e Urucui, estado do Piaui, nos anos de 1989 e 1990. O delineamento experimental foi de blocos casualizados, com 20 tratamentos e quatro repeticoes. Estudaram-se os aspectosde ciclo vegetativo, altura de plantas, rendimento de graos, peso de 100 graos, rendimento de engenho, centro branco, dimensao e classe de graos. Em termos de rendimento de graos, os melhores resultados foram alcancados pelos genotipos Rio Paranaiba e Araguaia, seguidos pela testemunha IAC 47. Destacarm-se em qualidade de graos, o CNA 5342 e o CNA6723, ambos apresentando graos pertencentes a classe longo fino, preferida pela grande maioria da populacao brasileira.
650 $aArroz
650 $aGenótipo
650 $aOryza Sativa
650 $aQualidade
650 $aRendimento
653 $aBrasil
653 $aPiaui
700 1 $aCAMPELO, G. J. de A.
700 1 $aRIBEIRO, V. Q.
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Embrapa Meio-Norte (CPAMN) |
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