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Registro Completo |
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Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
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Data corrente: |
23/01/2017 |
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Data da última atualização: |
23/01/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, W. F.; PROCOPIO, S. de O.; SILVA, A. G.; FERNANDES, M. F.; BARROSO, A. L. L. |
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Afiliação: |
SERGIO DE OLIVEIRA PROCOPIO, CPATC; MARCELO FERREIRA FERNANDES, CPATC. |
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Título: |
Weed phytosociological and floristic survey in agricultural areas of southwestern Goiás region. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Planta Daninha, Viçosa, MG, v. 34, n. 1, p. 65-80, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
The use of the Roundup Ready ® technology and the cultivation of a second cropinfluence the floristic composition of weed communities in Brazilian Central-West region cropping systems. This study has aimed to diagnose the dominant weed species in southwestern Goiás in areas of genetically-modified and conventional soybeans, using phytosociological and floristic surveys. Weed sampling was obtained by collecting all the plants present within a 0.5 m hollow frame, randomly thrown 20 times in each of thirty-five agricultural areas in the 2012/2013 harvest. Field survey was carried out in three periods: before desiccation for soybean sowing, before postemergence herbicide in soybean first application and before postemergence herbicide application in late harvest. A total of 525 m2 was inventoried and 3,219 weeds were collected, which included 79 species, 58 genera and 28 families. Families Poaceae, Asteraceae, Euphorbiaceae, Fabaceae, Amaranthaceae, were the most representative in the survey. Species Cenchrus echinatus, Glycine max, Chamaesyce hirta, Commelina benghalensis, and Alternanthera tenella stood out in importance. The RR+millet soybean treatment had the highest number of species (44), while the conventional soybean + sorghum treatment had the lowest number of species (18). The highest number of species was recorded in first sampling period. Treatments conventional soybean + maize and conventional soybean + millet showed higher similarity (70%), while treatments RR soybean + millet and conventional soybean + sorghum showed the least (51%). Species of difficult control were recorded in all cultivation systems analyzed. MenosThe use of the Roundup Ready ® technology and the cultivation of a second cropinfluence the floristic composition of weed communities in Brazilian Central-West region cropping systems. This study has aimed to diagnose the dominant weed species in southwestern Goiás in areas of genetically-modified and conventional soybeans, using phytosociological and floristic surveys. Weed sampling was obtained by collecting all the plants present within a 0.5 m hollow frame, randomly thrown 20 times in each of thirty-five agricultural areas in the 2012/2013 harvest. Field survey was carried out in three periods: before desiccation for soybean sowing, before postemergence herbicide in soybean first application and before postemergence herbicide application in late harvest. A total of 525 m2 was inventoried and 3,219 weeds were collected, which included 79 species, 58 genera and 28 families. Families Poaceae, Asteraceae, Euphorbiaceae, Fabaceae, Amaranthaceae, were the most representative in the survey. Species Cenchrus echinatus, Glycine max, Chamaesyce hirta, Commelina benghalensis, and Alternanthera tenella stood out in importance. The RR+millet soybean treatment had the highest number of species (44), while the conventional soybean + sorghum treatment had the lowest number of species (18). The highest number of species was recorded in first sampling period. Treatments conventional soybean + maize and conventional soybean + millet showed higher similarity (70%), while treatments RR soybe... Mostrar Tudo |
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Palavras-Chave: |
Floristic; Planta daninha. |
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Thesagro: |
Flor. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/153796/1/Planta-daninha.pdf
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Marc: |
LEADER 02260naa a2200205 a 4500
001 2061523
005 2017-01-23
008 2016 bl uuuu u00u1 u #d
100 1 $aSANTOS, W. F.
245 $aWeed phytosociological and floristic survey in agricultural areas of southwestern Goiás region.$h[electronic resource]
260 $c2016
520 $aThe use of the Roundup Ready ® technology and the cultivation of a second cropinfluence the floristic composition of weed communities in Brazilian Central-West region cropping systems. This study has aimed to diagnose the dominant weed species in southwestern Goiás in areas of genetically-modified and conventional soybeans, using phytosociological and floristic surveys. Weed sampling was obtained by collecting all the plants present within a 0.5 m hollow frame, randomly thrown 20 times in each of thirty-five agricultural areas in the 2012/2013 harvest. Field survey was carried out in three periods: before desiccation for soybean sowing, before postemergence herbicide in soybean first application and before postemergence herbicide application in late harvest. A total of 525 m2 was inventoried and 3,219 weeds were collected, which included 79 species, 58 genera and 28 families. Families Poaceae, Asteraceae, Euphorbiaceae, Fabaceae, Amaranthaceae, were the most representative in the survey. Species Cenchrus echinatus, Glycine max, Chamaesyce hirta, Commelina benghalensis, and Alternanthera tenella stood out in importance. The RR+millet soybean treatment had the highest number of species (44), while the conventional soybean + sorghum treatment had the lowest number of species (18). The highest number of species was recorded in first sampling period. Treatments conventional soybean + maize and conventional soybean + millet showed higher similarity (70%), while treatments RR soybean + millet and conventional soybean + sorghum showed the least (51%). Species of difficult control were recorded in all cultivation systems analyzed.
650 $aFlor
653 $aFloristic
653 $aPlanta daninha
700 1 $aPROCOPIO, S. de O.
700 1 $aSILVA, A. G.
700 1 $aFERNANDES, M. F.
700 1 $aBARROSO, A. L. L.
773 $tPlanta Daninha, Viçosa, MG$gv. 34, n. 1, p. 65-80, 2016.
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Embrapa Tabuleiros Costeiros (CPATC) |
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| 1. |  | SANTOS, W. F.; PROCOPIO, S. de O.; SILVA, A. G.; FERNANDES, M. F.; BARROSO, A. L. L. Weed phytosociological and floristic survey in agricultural areas of southwestern Goiás region. Planta Daninha, Viçosa, MG, v. 34, n. 1, p. 65-80, 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
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