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Registro Completo |
Biblioteca(s): |
Embrapa Uva e Vinho. |
Data corrente: |
17/11/2011 |
Data da última atualização: |
09/05/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SPÓSITO, M. B.; AMORIM, L.; BASSANEZI, R. B.; YAMAMOTO, P.; FELIPPE, M. R.; CZERMAINSKI, A. B. C. |
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. |
Título: |
Relative importance of inoculum sources of Guignardia citricarpa on the citrus black spot epidemic in Brazil. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
Crop Protection, Surrey, v. 30, n. 12, p. 1546-1552, 2011. |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Brasil. |
Thesagro: |
Doença de planta; Epidemiologia; Fruta cítrica; Fruticultura; Manejo. |
Thesaurus Nal: |
Guignardia citricarpa. |
Categoria do assunto: |
-- |
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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Embrapa Uva e Vinho (CNPUV) |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
25/05/1999 |
Data da última atualização: |
06/09/2021 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
FREIRE, L. C. L; BARROS, N. N.; CARNEIRO, H.; LOPES, E. A.; JOHNSON, W. L. |
Afiliação: |
CNPC; CNPC; CNPC. |
Título: |
Valor nutritivo de algumas forrageiras para caprinos e ovinos no Nordeste. |
Ano de publicação: |
1985 |
Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 22., 1985, Balneario Camboriú, SC. Anais.... Balneario Camboriú: Sociedade Brasileira de Zootecnia, 1985. p. 337. Resumo 238. |
Idioma: |
Português |
Palavras-Chave: |
Brasil; Cassia sp; Juazeiro; Native species; Nordeste. |
Thesagro: |
Clitoria ternatea; Cunhã; Espécie nativa; Fedegoso; Leguminosa forrageira; Leguminosae; Planta forrageira; Valor nutritivo; Ziziphus Joazeiro. |
Thesaurus NAL: |
Brazil; Forage; Foraging; Goats; Nutritive value; Sheep feeding. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/46267/1/RAC-Valor-nutritivo-de-algumas.pdf
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Marc: |
LEADER 01159nam a2200385 a 4500 001 1515083 005 2021-09-06 008 1985 bl uuuu u00u1 u #d 100 1 $aFREIRE, L. C. L 245 $aValor nutritivo de algumas forrageiras para caprinos e ovinos no Nordeste.$h[electronic resource] 260 $aIn: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 22., 1985, Balneario Camboriú, SC. Anais.... Balneario Camboriú: Sociedade Brasileira de Zootecnia, 1985. p. 337. Resumo 238.$c1985 650 $aBrazil 650 $aForage 650 $aForaging 650 $aGoats 650 $aNutritive value 650 $aSheep feeding 650 $aClitoria ternatea 650 $aCunhã 650 $aEspécie nativa 650 $aFedegoso 650 $aLeguminosa forrageira 650 $aLeguminosae 650 $aPlanta forrageira 650 $aValor nutritivo 650 $aZiziphus Joazeiro 653 $aBrasil 653 $aCassia sp 653 $aJuazeiro 653 $aNative species 653 $aNordeste 700 1 $aBARROS, N. N. 700 1 $aCARNEIRO, H. 700 1 $aLOPES, E. A. 700 1 $aJOHNSON, W. L.
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