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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
21/11/2013 |
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Data da última atualização: |
22/01/2020 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
BARBEDO, J. G. A. |
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Afiliação: |
JAYME GARCIA ARNAL BARBEDO, CNPTIA. |
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Título: |
Automatically measuring early and late leaf spot lesions in peanut plants using digital image processing. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE AGROINFORMÁTICA, 9., 2013, Cuiabá. Agroinformática: inovação para a sustentabilidade do agronegócio brasileiro: anais. Cuiabá: Universidade Federal de Mato Grosso, 2013. |
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Páginas: |
Não paginado. |
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Idioma: |
Inglês |
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Notas: |
SBIAgro 2013. |
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Conteúdo: |
Abstract. This paper presents a method to measure the lesions originated by the Cercospora arachidicola and Cercosporidium personatum fungi, which cause, respectively, the early and late leaf spots in peanut plants. The proposed method is based on a modified version of a previous proposal by the author, and uses mainly well-known image processing techniques, as well as specialist knowledge, to separate lesions from healthy tissue. The resulting tool provides good area estimates with minimum user interference and low computational burden. |
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Palavras-Chave: |
Image processing; Medida de lesões; Processamento de imagens. |
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Thesaurus Nal: |
Image analysis; Lesions (plant). |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/92830/1/117625.pdf
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Marc: |
LEADER 01313nam a2200193 a 4500
001 1971748
005 2020-01-22
008 2013 bl uuuu u00u1 u #d
100 1 $aBARBEDO, J. G. A.
245 $aAutomatically measuring early and late leaf spot lesions in peanut plants using digital image processing.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE AGROINFORMÁTICA, 9., 2013, Cuiabá. Agroinformática: inovação para a sustentabilidade do agronegócio brasileiro: anais. Cuiabá: Universidade Federal de Mato Grosso$c2013
300 $aNão paginado.
500 $aSBIAgro 2013.
520 $aAbstract. This paper presents a method to measure the lesions originated by the Cercospora arachidicola and Cercosporidium personatum fungi, which cause, respectively, the early and late leaf spots in peanut plants. The proposed method is based on a modified version of a previous proposal by the author, and uses mainly well-known image processing techniques, as well as specialist knowledge, to separate lesions from healthy tissue. The resulting tool provides good area estimates with minimum user interference and low computational burden.
650 $aImage analysis
650 $aLesions (plant)
653 $aImage processing
653 $aMedida de lesões
653 $aProcessamento de imagens
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
13/02/2004 |
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Data da última atualização: |
29/10/2018 |
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Autoria: |
SBRISSIA, A. F.; SILVA, S. C. da; MATTHEW, C.; CARVALHO, C. A. B. de; CARNEVALLI, R. A.; PINTO, L. F. de M.; FAGUNDES, J. L.; PEDREIRA, C. G. S. |
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Afiliação: |
André Fischer Sbrissia, Escola Superior de Agricutura Luiz de Queiroz - Esalq/Departamento de Zootecnia; Sila Carneiro da Silva, Escola Superior de Agricutura Luiz de Queiroz - Esalq/Departamento de Zootecnia; Cory Matthew, Massey University/Institute of Natural Resources; Carlos Augusto Brandão de Carvalho, Escola Superior de Agricutura Luiz de Queiroz - Esalq/Departamento de Zootecnia; Roberta Aparecida Carnevalli, Escola Superior de Agricutura Luiz de Queiroz - Esalq/Departamento de Zootecnia; Luiz Felipe de Moura Pinto, Escola Superior de Agricutura Luiz de Queiroz - Esalq/Departamento de Zootecnia; Jaílson Lara Fagundes, Escola Superior de Agricutura Luiz de Queiroz - Esalq/Departamento de Zootecnia; Carlos Guilherme Silveira Pedreira, Escola Superior de Agricutura Luiz de Queiroz - Esalq/Departamento de ZootecniaEscola Superior de Agricutura Luiz de Queiroz - Esalq/Departamento de Zootecnia. |
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Título: |
Tiller size/density compensation in grazed Tifton 85 bermudagrass swards. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 38, n. 12, p. 1459-1468, dez. 2003 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Compensação tamanho/densidade populacional de perfilhos em pastos de Tifton 85. |
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Conteúdo: |
The objective of this study was to evaluate the occurrence of the tiller size/density compensation mechanism in Tifton 85 bermudagrass swards grazed by sheep under continuous stocking. Treatments corresponded to four sward steady state conditions (5, 10, 15, and 20 cm of sward surface height), maintained by sheep grazing. The experimental design was a complete randomized block with four replicates. Pasture responses evaluated include: tiller population density, tiller mass, leaf mass and leaf area per tiller, and herbage mass. Tiller volume, leaf area index, tiller leaf/stem ratio, and tiller leaf area/volume ratio were calculated and simple regression analyses between tiller population density and tiller mass were performed. Measurements were made in December, 1998, and January, April, and July, 1999. The swards showed a tiller size/density compensation mechanism in which high tiller population densities were associated with small tillers and vice-versa, except in July, 1999. Regression analyses revealed that linear coefficients were steeper than the theoretical expectation of -3/2. Increments in herbage mass were attributable to increases in tiller mass in December and January. Leaf area/volume ratio values of Tifton 85 tillers were much lower than those commonly found for temperate grass species. |
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Palavras-Chave: |
densidade; índice de superfície foliar. |
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Thesagro: |
Massa; Morfologia Vegetal. |
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Thesaurus NAL: |
Cynodon; density; leaf area index; mass; plant morphology. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/108446/1/Tiller.pdf
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Marc: |
LEADER 02324naa a2200325 a 4500
001 1109696
005 2018-10-29
008 2003 bl uuuu u00u1 u #d
100 1 $aSBRISSIA, A. F.
245 $aTiller size/density compensation in grazed Tifton 85 bermudagrass swards.
260 $c2003
500 $aTítulo em português: Compensação tamanho/densidade populacional de perfilhos em pastos de Tifton 85.
520 $aThe objective of this study was to evaluate the occurrence of the tiller size/density compensation mechanism in Tifton 85 bermudagrass swards grazed by sheep under continuous stocking. Treatments corresponded to four sward steady state conditions (5, 10, 15, and 20 cm of sward surface height), maintained by sheep grazing. The experimental design was a complete randomized block with four replicates. Pasture responses evaluated include: tiller population density, tiller mass, leaf mass and leaf area per tiller, and herbage mass. Tiller volume, leaf area index, tiller leaf/stem ratio, and tiller leaf area/volume ratio were calculated and simple regression analyses between tiller population density and tiller mass were performed. Measurements were made in December, 1998, and January, April, and July, 1999. The swards showed a tiller size/density compensation mechanism in which high tiller population densities were associated with small tillers and vice-versa, except in July, 1999. Regression analyses revealed that linear coefficients were steeper than the theoretical expectation of -3/2. Increments in herbage mass were attributable to increases in tiller mass in December and January. Leaf area/volume ratio values of Tifton 85 tillers were much lower than those commonly found for temperate grass species.
650 $aCynodon
650 $adensity
650 $aleaf area index
650 $amass
650 $aplant morphology
650 $aMassa
650 $aMorfologia Vegetal
653 $adensidade
653 $aíndice de superfície foliar
700 1 $aSILVA, S. C. da
700 1 $aMATTHEW, C.
700 1 $aCARVALHO, C. A. B. de
700 1 $aCARNEVALLI, R. A.
700 1 $aPINTO, L. F. de M.
700 1 $aFAGUNDES, J. L.
700 1 $aPEDREIRA, C. G. S.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 38, n. 12, p. 1459-1468, dez. 2003
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Embrapa Unidades Centrais (AI-SEDE) |
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