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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
13/05/2014 |
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Data da última atualização: |
13/05/2014 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
CARDINOT, G.; NEPSTAD, D. C.; MOUTINHO, P.; DIAS FILHO, M.; DAVIDSON, E.; VIANA, N. |
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Afiliação: |
GINA CARDINOT, IPAM; DANIEL C. NEPSTAD, IPAM / WOODS HOLE RESEARCH CENTER; PAULO MOUTINHO, IPAM; MOACYR BERNARDINO DIAS FILHO, CPATU; ERIC DAVIDSON, WOODS HOLE RESEARCH CENTER; NOEMI VIANNA MARTINS LEAO, CPATU. |
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Título: |
De que modo o el niño influência a Amazônia? um experimento de exclusão de chuva. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE BOTÂNICA, 51., 2000, Brasília, DF. Tópicos atuais em botânica: palestras convidadas. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia: SBB, 2000. |
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Páginas: |
p. 147-151. |
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Idioma: |
Português |
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Notas: |
Org. por Taciana Barbosa Cavalcanti e Bruno Machado Teles Walter. |
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Thesagro: |
Chuva. |
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Thesaurus Nal: |
Amazonia; El Nino. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/102133/1/147.pdf
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Marc: |
LEADER 00781nam a2200217 a 4500
001 1986018
005 2014-05-13
008 2000 bl uuuu u00u1 u #d
100 1 $aCARDINOT, G.
245 $aDe que modo o el niño influência a Amazônia? um experimento de exclusão de chuva.
260 $aIn: CONGRESSO NACIONAL DE BOTÂNICA, 51., 2000, Brasília, DF. Tópicos atuais em botânica: palestras convidadas. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia: SBB$c2000
300 $ap. 147-151.
500 $aOrg. por Taciana Barbosa Cavalcanti e Bruno Machado Teles Walter.
650 $aAmazonia
650 $aEl Nino
650 $aChuva
700 1 $aNEPSTAD, D. C.
700 1 $aMOUTINHO, P.
700 1 $aDIAS FILHO, M.
700 1 $aDAVIDSON, E.
700 1 $aVIANA, N.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Roraima. |
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Data corrente: |
27/05/2021 |
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Data da última atualização: |
18/06/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
MELO, A. K. P.; ALBUQUERQUE, J. A. A.; SIQUEIRA, R. H. S.; SILVA, E. E. da; MEDEIROS, R. D. de; SOUZA, K. T. S.; SOUZA, L. T.; GONÇALVES, A. C. M.; SOARES, M. B. B. |
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Afiliação: |
EDMILSON EVANGELISTA DA SILVA, CPAF-RR; ROBERTO DANTAS DE MEDEIROS, CPAF-RR. |
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Título: |
Occurrence of noxious weeds under different soil management systems. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Applied Ecology and Environmental Research, v. 19, n. 3, p. 2061-2072, 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this work was to identify weed species in areas under different soil management systems. The research was carried out in the Brazilian Agricultural Research Corporation experimental area, in the 2017/2018 harvest, in the city of Boa Vista, Roraima State, Brazil. The experimental design was randomized blocks and the treatments included of five soil management systems (native vegetation, minimum tillage, no-tillage, conventional tillage and conventional tillage with crop rotation). Weed collection, identification, counting and drying were performed and then the phytosociological indices (Relative density, relative frequency, relative abundance, importance value index, relative importance value index and dry mass) were calculated. Variance analysis with means compared by Tukey test (P <0.05), group analysis by hierarchical and non-hierarchical method, and principal component analysis were performed. Correlation coefficients of the variables were estimated. No and minimum tillage systems had the lowest weed rates per square meter. The botanical families Poaceae, Fabaceae and Rubiaceae are the most representative in the studied systems. Concerning relative frequency, the species Cyperus flavus stood out in all treatments other than native vegetation. |
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Palavras-Chave: |
Cover plant; Native vegetati; Phytosociological parameters; Spontaneous plants. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/223505/1/MELO-et-.-2021.pdf
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Marc: |
LEADER 02081naa a2200265 a 4500
001 2132072
005 2021-06-18
008 2021 bl uuuu u00u1 u #d
100 1 $aMELO, A. K. P.
245 $aOccurrence of noxious weeds under different soil management systems.$h[electronic resource]
260 $c2021
520 $aThe aim of this work was to identify weed species in areas under different soil management systems. The research was carried out in the Brazilian Agricultural Research Corporation experimental area, in the 2017/2018 harvest, in the city of Boa Vista, Roraima State, Brazil. The experimental design was randomized blocks and the treatments included of five soil management systems (native vegetation, minimum tillage, no-tillage, conventional tillage and conventional tillage with crop rotation). Weed collection, identification, counting and drying were performed and then the phytosociological indices (Relative density, relative frequency, relative abundance, importance value index, relative importance value index and dry mass) were calculated. Variance analysis with means compared by Tukey test (P <0.05), group analysis by hierarchical and non-hierarchical method, and principal component analysis were performed. Correlation coefficients of the variables were estimated. No and minimum tillage systems had the lowest weed rates per square meter. The botanical families Poaceae, Fabaceae and Rubiaceae are the most representative in the studied systems. Concerning relative frequency, the species Cyperus flavus stood out in all treatments other than native vegetation.
653 $aCover plant
653 $aNative vegetati
653 $aPhytosociological parameters
653 $aSpontaneous plants
700 1 $aALBUQUERQUE, J. A. A.
700 1 $aSIQUEIRA, R. H. S.
700 1 $aSILVA, E. E. da
700 1 $aMEDEIROS, R. D. de
700 1 $aSOUZA, K. T. S.
700 1 $aSOUZA, L. T.
700 1 $aGONÇALVES, A. C. M.
700 1 $aSOARES, M. B. B.
773 $tApplied Ecology and Environmental Research$gv. 19, n. 3, p. 2061-2072, 2021.
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Registro original: |
Embrapa Roraima (CPAF-RR) |
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