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Registro Completo |
Biblioteca(s): |
Embrapa Roraima. |
Data corrente: |
27/05/2021 |
Data da última atualização: |
18/06/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
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. |
Afiliação: |
EDMILSON EVANGELISTA DA SILVA, CPAF-RR; ROBERTO DANTAS DE MEDEIROS, CPAF-RR. |
Título: |
Occurrence of noxious weeds under different soil management systems. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Applied Ecology and Environmental Research, v. 19, n. 3, p. 2061-2072, 2021. |
Idioma: |
Inglês |
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. |
Palavras-Chave: |
Cover plant; Native vegetati; Phytosociological parameters; Spontaneous plants. |
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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Embrapa Roraima (CPAF-RR) |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Ocidental. |
Data corrente: |
02/04/2003 |
Data da última atualização: |
21/11/2019 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
DUTRA, L. G. |
Afiliação: |
Leôncio Gonçalves Dutra, CPAA. |
Título: |
Fósforo em solos amazônicos: II - Correlações com outras características. |
Ano de publicação: |
1986 |
Fonte/Imprenta: |
In: ENCONTRO DE PESQUISADORES DA AMAZÔNIA, 5., 1986, Manaus. Anais... Manaus: FUA, 1986. |
Páginas: |
p. 86. |
Idioma: |
Português |
Conteúdo: |
Correlações entre as características de adsorção máxima de fósforo e energia de adsorção. |
Palavras-Chave: |
Brasil. |
Thesagro: |
Adsorção; Fósforo; Solo. |
Thesaurus NAL: |
Amazonia. |
Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/191795/1/Fosfor-em-solos-amazonicos....pdf
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Marc: |
LEADER 00610nam a2200181 a 4500 001 1672076 005 2019-11-21 008 1986 bl uuuu u00u1 u #d 100 1 $aDUTRA, L. G. 245 $aFósforo em solos amazônicos$bII - Correlações com outras características. 260 $aIn: ENCONTRO DE PESQUISADORES DA AMAZÔNIA, 5., 1986, Manaus. Anais... Manaus: FUA$c1986 300 $ap. 86. 520 $aCorrelações entre as características de adsorção máxima de fósforo e energia de adsorção. 650 $aAmazonia 650 $aAdsorção 650 $aFósforo 650 $aSolo 653 $aBrasil
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