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Registro Completo |
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Biblioteca(s): |
Embrapa Uva e Vinho. |
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Data corrente: |
17/11/2011 |
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Data da última atualização: |
09/05/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SPÓSITO, M. B.; AMORIM, L.; BASSANEZI, R. B.; YAMAMOTO, P.; FELIPPE, M. R.; CZERMAINSKI, A. B. C. |
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Afiliação: |
MARCEL B. SPÓSITO, FUNDECITRUS; LILIAN AMORIM, ESALQ/USP; RENATO B. BASSANEZI, FUNDECITRUS; PEDRO YAMAMOTO, FUNDECITRUS; MARCOS R. FELIPPE, FUNDECITRUS; ANA BEATRIZ COSTA CZERMAINSKI, CNPUV. |
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Título: |
Relative importance of inoculum sources of Guignardia citricarpa on the citrus black spot epidemic in Brazil. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Crop Protection, Surrey, v. 30, n. 12, p. 1546-1552, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
Guignardia citricarpa, the causal agent of citrus black spot (CBS), forms ascospores and conidia in citrus leaf litter and only conidia on fruit and twigs. The objective of this work was to determine the relative importance of inoculum sources of ascospores and conidia in the progress of CBS under natural conditions in Brazil. A first experiment was conducted in an orchard subdivided into two areas. In one area, fallen leaves were removed and in the other area fallen leaves were maintained. In each area, two treatments were established: 1) CBS symptomatic mature fruit remained on the trees after the new fruit set, and 2) CBS symptomatic mature fruit were harvested before the new fruit set. A second experiment was carried out in a CBS-free experimental orchard where detached symptomatic fruit and leaf litter on the orchard floor and detached symptomatic fruit and dead twigs on the tree canopy were distributed to investigate the spread of disease. In the first experiment disease incidence was similar for all treatments in all years. However, in 2003, in the area without leaf litter (absence of the ascospores source), disease intensity and the rate of progress of disease incidence were higher when there was overlap of mature and young fruit. In the second experiment, only detached symptomatic fruit and dead twigs on the tree canopy were able to spread CBS in two years of the experiment. The distance of disease spread was less than 80 cm from these inoculum sources. The removal of fallen leaves was not sufficient to completely suppress the disease because of the presence of conidia in fruit and dead twigs. Therefore the reduction of conidia sources should be considered in CBS management in Brazil. MenosGuignardia citricarpa, the causal agent of citrus black spot (CBS), forms ascospores and conidia in citrus leaf litter and only conidia on fruit and twigs. The objective of this work was to determine the relative importance of inoculum sources of ascospores and conidia in the progress of CBS under natural conditions in Brazil. A first experiment was conducted in an orchard subdivided into two areas. In one area, fallen leaves were removed and in the other area fallen leaves were maintained. In each area, two treatments were established: 1) CBS symptomatic mature fruit remained on the trees after the new fruit set, and 2) CBS symptomatic mature fruit were harvested before the new fruit set. A second experiment was carried out in a CBS-free experimental orchard where detached symptomatic fruit and leaf litter on the orchard floor and detached symptomatic fruit and dead twigs on the tree canopy were distributed to investigate the spread of disease. In the first experiment disease incidence was similar for all treatments in all years. However, in 2003, in the area without leaf litter (absence of the ascospores source), disease intensity and the rate of progress of disease incidence were higher when there was overlap of mature and young fruit. In the second experiment, only detached symptomatic fruit and dead twigs on the tree canopy were able to spread CBS in two years of the experiment. The distance of disease spread was less than 80 cm from these inoculum sources. The removal ... Mostrar Tudo |
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Palavras-Chave: |
Brasil. |
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Thesagro: |
Doença de planta; Epidemiologia; Fruta cítrica; Fruticultura; Manejo. |
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Thesaurus Nal: |
Guignardia citricarpa. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/46862/1/SPOSITO-CropProtection-v30n12p1546-2011.pdf
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Marc: |
LEADER 02504naa a2200265 a 4500
001 1906208
005 2019-05-09
008 2011 bl uuuu u00u1 u #d
100 1 $aSPÓSITO, M. B.
245 $aRelative importance of inoculum sources of Guignardia citricarpa on the citrus black spot epidemic in Brazil.$h[electronic resource]
260 $c2011
520 $aGuignardia citricarpa, the causal agent of citrus black spot (CBS), forms ascospores and conidia in citrus leaf litter and only conidia on fruit and twigs. The objective of this work was to determine the relative importance of inoculum sources of ascospores and conidia in the progress of CBS under natural conditions in Brazil. A first experiment was conducted in an orchard subdivided into two areas. In one area, fallen leaves were removed and in the other area fallen leaves were maintained. In each area, two treatments were established: 1) CBS symptomatic mature fruit remained on the trees after the new fruit set, and 2) CBS symptomatic mature fruit were harvested before the new fruit set. A second experiment was carried out in a CBS-free experimental orchard where detached symptomatic fruit and leaf litter on the orchard floor and detached symptomatic fruit and dead twigs on the tree canopy were distributed to investigate the spread of disease. In the first experiment disease incidence was similar for all treatments in all years. However, in 2003, in the area without leaf litter (absence of the ascospores source), disease intensity and the rate of progress of disease incidence were higher when there was overlap of mature and young fruit. In the second experiment, only detached symptomatic fruit and dead twigs on the tree canopy were able to spread CBS in two years of the experiment. The distance of disease spread was less than 80 cm from these inoculum sources. The removal of fallen leaves was not sufficient to completely suppress the disease because of the presence of conidia in fruit and dead twigs. Therefore the reduction of conidia sources should be considered in CBS management in Brazil.
650 $aGuignardia citricarpa
650 $aDoença de planta
650 $aEpidemiologia
650 $aFruta cítrica
650 $aFruticultura
650 $aManejo
653 $aBrasil
700 1 $aAMORIM, L.
700 1 $aBASSANEZI, R. B.
700 1 $aYAMAMOTO, P.
700 1 $aFELIPPE, M. R.
700 1 $aCZERMAINSKI, A. B. C.
773 $tCrop Protection, Surrey$gv. 30, n. 12, p. 1546-1552, 2011.
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Registro original: |
Embrapa Uva e Vinho (CNPUV) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
17/09/2015 |
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Data da última atualização: |
19/07/2017 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
SILVA, M. S. G. M. e; QUEIROZ, J. F. de. |
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Afiliação: |
MARIANA SILVEIRA GUERRA MOURA E SILVA, CNPMA; JULIO FERRAZ DE QUEIROZ, CNPMA. |
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Título: |
Amostragem de água para análises biológicas. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
In: FILIZOLA, H. F.; GOMES, M. A. F.; SOUZA, M. D. de. Manual de procedimentos de coleta de amostras em áreas agrícolas para análise da qualidade ambiental: solo, água e sedimentos. Jaguariúna: Embrapa Meio Ambiente, 2006. p. 83-102. |
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Idioma: |
Português |
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Thesagro: |
Água; Amostragem; Sedimento; Solo. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/129877/1/2006PL-021.pdf
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Marc: |
LEADER 00652naa a2200169 a 4500
001 2024275
005 2017-07-19
008 2006 bl uuuu u00u1 u #d
100 1 $aSILVA, M. S. G. M. e
245 $aAmostragem de água para análises biológicas.$h[electronic resource]
260 $c2006
650 $aÁgua
650 $aAmostragem
650 $aSedimento
650 $aSolo
700 1 $aQUEIROZ, J. F. de
773 $tIn: FILIZOLA, H. F.; GOMES, M. A. F.; SOUZA, M. D. de. Manual de procedimentos de coleta de amostras em áreas agrícolas para análise da qualidade ambiental: solo, água e sedimentos. Jaguariúna: Embrapa Meio Ambiente, 2006. p. 83-102.
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Embrapa Meio Ambiente (CNPMA) |
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