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Registro Completo |
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Biblioteca(s): |
Embrapa Clima Temperado; Embrapa Milho e Sorgo. |
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Data corrente: |
09/09/2019 |
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Data da última atualização: |
09/09/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CONCENCO, G.; ANDRES, A.; SCHREIBER, F.; SILVA, A. F.; MOISINHO, I. S.; CORADINI, M. C. |
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Afiliação: |
GERMANI CONCENCO, CPACT; ANDRE ANDRES, CPACT. |
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Título: |
Characterization of the weed flora in rice areas under distinct cropping systems and herbicide managements. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Planta Daninha, v. 37:e019193419, 2019. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
ABSTRACT - The aim of this study was to evaluate the occurrence of weeds in flooded rice areas, as a function of planting system and herbicide programmes in the previous cropping year. The experiment was installed in field conditions, in randomized complete blocks design, arranged in factorial scheme 3 x 2, with eight replications. In factor A, treatments consisted on conventional tillage, minimum tillage and no till cropping systems, coupled to the application (traditional control) or not (semiecological system) of herbicides (Factor B). One year after rice cultivation, preceding the planting of the next cropping season, phytosociological evaluations of the weed communities present in the treatments were carried out. We assessed the overall infestation level and weed species composition, which were classified by their respective density, frequency and dominance abilities. We also estimated the diversity coefficients of Simpson and Shannon Weiner, and the sustainability coefficient of Shannon; treatments were also grouped by similarity in weed species composition. Rice growing systems (traditional or semi-ecological) promote remarkable differences in weed occurrence. Herbicide-based crops select specific companion weed species, but crop rotation or winter cover crops are not a sine qua non condition for success since a good herbicide programme is planned. For the Semi ecological system, crop rotation, thick winter soil mulching and association with animal presence and grazing are essential for the short, medium and long-term inhibition of weeds. RESUMO - O objetivo deste trabalho foi avaliar a ocorrência de plantas daninhas em arroz irrigado por inundação, em função do sistema de plantio e do manejo de herbicidas na safra anterior. O experimento foi instalado em campo, em delineamento experimental de blocos casualizados dispostos em esquema fatorial 3 x 2, com oito repetições. O fator A foi o sistema de cultivo, sendo sistema convencional, cultivo mínimo ou plantio direto, associados à aplicação (manejo tradicional) ou não (sistema semiecológico) de herbicidas (Fator B). Um ano após o cultivo do arroz, precedendo o novo plantio, foram efetuadas as avaliações fitossociológicas das comunidades infestantes. Foram avaliadas a infestação geral e a composição de espécies infestantes nos tratamentos, que foram classificadas pela sua densidade, frequência e dominância relativas de ocorrência. Foram ainda estimados os coeficientes de diversidade de Simpson e Shannon Weiner, bem como a sustentabilidade de Shannon; os tratamentos foram agrupados pela similaridade de ocorrência das espécies infestantes. Os sistemas de cultivo de arroz (tradicional ou semiecológico) promovem diferenças marcantes na ocorrência de plantas daninhas. O controle com base em herbicidas seleciona plantas companheiras específicas, mas a rotação de culturas ou coberturas de inverno não parece ser condição sine qua non para o sucesso desses sistemas, desde que o programa de manejo herbicida seja adequado. Para o sistema semiecológico, a rotação de culturas e espessa camada vegetal de cobertura de inverno, bem como sua associação com o pastejo animal, parecem essenciais para o manejo de plantas daninhas no curto, médio e longo prazos. MenosABSTRACT - The aim of this study was to evaluate the occurrence of weeds in flooded rice areas, as a function of planting system and herbicide programmes in the previous cropping year. The experiment was installed in field conditions, in randomized complete blocks design, arranged in factorial scheme 3 x 2, with eight replications. In factor A, treatments consisted on conventional tillage, minimum tillage and no till cropping systems, coupled to the application (traditional control) or not (semiecological system) of herbicides (Factor B). One year after rice cultivation, preceding the planting of the next cropping season, phytosociological evaluations of the weed communities present in the treatments were carried out. We assessed the overall infestation level and weed species composition, which were classified by their respective density, frequency and dominance abilities. We also estimated the diversity coefficients of Simpson and Shannon Weiner, and the sustainability coefficient of Shannon; treatments were also grouped by similarity in weed species composition. Rice growing systems (traditional or semi-ecological) promote remarkable differences in weed occurrence. Herbicide-based crops select specific companion weed species, but crop rotation or winter cover crops are not a sine qua non condition for success since a good herbicide programme is planned. For the Semi ecological system, crop rotation, thick winter soil mulching and association with animal presence and grazin... Mostrar Tudo |
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Palavras-Chave: |
Arroz semiecológico; Fitossociologia; Planta daninha; Semi-ecological rice; Southern Brazil. |
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Thesagro: |
Arroz; Controle Químico; Erva Daninha; Herbicida. |
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Thesaurus Nal: |
Chemical control; Phytosociology. |
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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/201749/1/CONCENCO-RPD-Charact-WeedFlora.pdf
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Marc: |
LEADER 04181naa a2200313 a 4500
001 2112072
005 2019-09-09
008 2019 bl uuuu u00u1 u #d
100 1 $aCONCENCO, G.
245 $aCharacterization of the weed flora in rice areas under distinct cropping systems and herbicide managements.$h[electronic resource]
260 $c2019
520 $aABSTRACT - The aim of this study was to evaluate the occurrence of weeds in flooded rice areas, as a function of planting system and herbicide programmes in the previous cropping year. The experiment was installed in field conditions, in randomized complete blocks design, arranged in factorial scheme 3 x 2, with eight replications. In factor A, treatments consisted on conventional tillage, minimum tillage and no till cropping systems, coupled to the application (traditional control) or not (semiecological system) of herbicides (Factor B). One year after rice cultivation, preceding the planting of the next cropping season, phytosociological evaluations of the weed communities present in the treatments were carried out. We assessed the overall infestation level and weed species composition, which were classified by their respective density, frequency and dominance abilities. We also estimated the diversity coefficients of Simpson and Shannon Weiner, and the sustainability coefficient of Shannon; treatments were also grouped by similarity in weed species composition. Rice growing systems (traditional or semi-ecological) promote remarkable differences in weed occurrence. Herbicide-based crops select specific companion weed species, but crop rotation or winter cover crops are not a sine qua non condition for success since a good herbicide programme is planned. For the Semi ecological system, crop rotation, thick winter soil mulching and association with animal presence and grazing are essential for the short, medium and long-term inhibition of weeds. RESUMO - O objetivo deste trabalho foi avaliar a ocorrência de plantas daninhas em arroz irrigado por inundação, em função do sistema de plantio e do manejo de herbicidas na safra anterior. O experimento foi instalado em campo, em delineamento experimental de blocos casualizados dispostos em esquema fatorial 3 x 2, com oito repetições. O fator A foi o sistema de cultivo, sendo sistema convencional, cultivo mínimo ou plantio direto, associados à aplicação (manejo tradicional) ou não (sistema semiecológico) de herbicidas (Fator B). Um ano após o cultivo do arroz, precedendo o novo plantio, foram efetuadas as avaliações fitossociológicas das comunidades infestantes. Foram avaliadas a infestação geral e a composição de espécies infestantes nos tratamentos, que foram classificadas pela sua densidade, frequência e dominância relativas de ocorrência. Foram ainda estimados os coeficientes de diversidade de Simpson e Shannon Weiner, bem como a sustentabilidade de Shannon; os tratamentos foram agrupados pela similaridade de ocorrência das espécies infestantes. Os sistemas de cultivo de arroz (tradicional ou semiecológico) promovem diferenças marcantes na ocorrência de plantas daninhas. O controle com base em herbicidas seleciona plantas companheiras específicas, mas a rotação de culturas ou coberturas de inverno não parece ser condição sine qua non para o sucesso desses sistemas, desde que o programa de manejo herbicida seja adequado. Para o sistema semiecológico, a rotação de culturas e espessa camada vegetal de cobertura de inverno, bem como sua associação com o pastejo animal, parecem essenciais para o manejo de plantas daninhas no curto, médio e longo prazos.
650 $aChemical control
650 $aPhytosociology
650 $aArroz
650 $aControle Químico
650 $aErva Daninha
650 $aHerbicida
653 $aArroz semiecológico
653 $aFitossociologia
653 $aPlanta daninha
653 $aSemi-ecological rice
653 $aSouthern Brazil
700 1 $aANDRES, A.
700 1 $aSCHREIBER, F.
700 1 $aSILVA, A. F.
700 1 $aMOISINHO, I. S.
700 1 $aCORADINI, M. C.
773 $tPlanta Daninha$gv. 37:e019193419, 2019.
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Registro original: |
Embrapa Clima Temperado (CPACT) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
19/07/2022 |
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Data da última atualização: |
19/07/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SCHIRMBECK, L. W.; FONTANA, D. C.; SCHIRMBECK, J.; DALMAGO, G. A.; FERNANDES, J. M. C. |
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Afiliação: |
LUCIMARA W. SCHIRMBECK, UFRGS; DENISE C. FONTANA, UFRGS; JULIANO SCHIRMBECK, UNIVATES; GENEI ANTONIO DALMAGO, CNPT; JOSE MAURICIO CUNHA FERNANDES, CNPT. |
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Título: |
Surface moisture index by radiometric measurements and orbital data. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Engenharia Agrícola, v. 42, n. 2, e20210043, 2022. |
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DOI: |
https://doi.org/10.1590/1809-4430-Eng.Agric.v42n2e20210043/2022 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: As an indicator of surface moisture, TVDI has great potential for application in agriculture in different types of climates, but the best results have been obtained in arid climates, given the presence of areas with contrasting water conditions. Some studies under subtropical climate conditions have shown good results in the use of TVDI as an indicator of surface moisture but some uncertainties still need to be better understood. This study aimed to evaluate the coherence of temperature-vegetation dryness index (TVDI) values, obtained from sensors installed on the surface, compared to data obtained using orbital images in an agricultural area in southern Brazil under humid subtropical climate conditions. The analyses employed normalized difference vegetation index (NDVI) and surface temperature (TS) data obtained through sensors installed on the surface, with continuous monitoring, as well as Landsat OLI/TIRS images, covering the period of the soybean cycle. The TVDI values, obtained from NDVI and TS radiometric sensors installed in the field, indicated consistency of using Landsat-OLI/TIRS orbital images to map the surface moisture condition, representing the spatial and temporal variations of the water condition of soybean cultivations under subtropical climate conditions. |
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Palavras-Chave: |
Clima subtropical; Cultivo de soja; Glycine max L; Ground-based NDVI system; Índice de secura temperatura-vegetação; Sistema NDVI terrestre; Temperature-vegetation dryness index; TVDI. |
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Thesagro: |
Agricultura. |
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Thesaurus NAL: |
Agriculture. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1144814/1/Surface.pdf
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Marc: |
LEADER 02253naa a2200301 a 4500
001 2144814
005 2022-07-19
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/1809-4430-Eng.Agric.v42n2e20210043/2022$2DOI
100 1 $aSCHIRMBECK, L. W.
245 $aSurface moisture index by radiometric measurements and orbital data.$h[electronic resource]
260 $c2022
520 $aAbstract: As an indicator of surface moisture, TVDI has great potential for application in agriculture in different types of climates, but the best results have been obtained in arid climates, given the presence of areas with contrasting water conditions. Some studies under subtropical climate conditions have shown good results in the use of TVDI as an indicator of surface moisture but some uncertainties still need to be better understood. This study aimed to evaluate the coherence of temperature-vegetation dryness index (TVDI) values, obtained from sensors installed on the surface, compared to data obtained using orbital images in an agricultural area in southern Brazil under humid subtropical climate conditions. The analyses employed normalized difference vegetation index (NDVI) and surface temperature (TS) data obtained through sensors installed on the surface, with continuous monitoring, as well as Landsat OLI/TIRS images, covering the period of the soybean cycle. The TVDI values, obtained from NDVI and TS radiometric sensors installed in the field, indicated consistency of using Landsat-OLI/TIRS orbital images to map the surface moisture condition, representing the spatial and temporal variations of the water condition of soybean cultivations under subtropical climate conditions.
650 $aAgriculture
650 $aAgricultura
653 $aClima subtropical
653 $aCultivo de soja
653 $aGlycine max L
653 $aGround-based NDVI system
653 $aÍndice de secura temperatura-vegetação
653 $aSistema NDVI terrestre
653 $aTemperature-vegetation dryness index
653 $aTVDI
700 1 $aFONTANA, D. C.
700 1 $aSCHIRMBECK, J.
700 1 $aDALMAGO, G. A.
700 1 $aFERNANDES, J. M. C.
773 $tEngenharia Agrícola$gv. 42, n. 2, e20210043, 2022.
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Registro original: |
Embrapa Trigo (CNPT) |
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