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Registro Completo |
Biblioteca(s): |
Embrapa Acre. |
Data corrente: |
02/12/2015 |
Data da última atualização: |
02/07/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
LIMA, F. S. de O.; SANTOS, G. R. dos; NOGUEIRA, S. R.; SANTOS, P. R. R. dos; CORREA, V. R. |
Afiliação: |
Fábia Silva de Oliveira Lima, Instituto Federal de Educação, Ciência e Tecnologia do Tocantins-Campus Dianópolis; Gil Rodrigues dos Santos, Universidade Federal do Tocantins-Campus Gurupi; SONIA REGINA NOGUEIRA, CPAF-AC; Patrícia Resplandes Rocha dos Santos, Universidade Federal do Tocantins-Campus Gurupi; Valdir Ribeiro Correa, Instituto Federal de Educação, Ciência e Tecnologia do Tocantins-Campus Dianópolis. |
Título: |
Population dynamics of the root lesion nematode, Pratylenchus brachyurus, in soybean fields in Tocantins state and its effect to soybean yield. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Nematropica, Florida, v. 45, n. 2, p. 170-177, 2015. |
ISSN: |
2220-5616 |
Idioma: |
Inglês |
Conteúdo: |
Pratylenchus brachyurus has become increasingly common in soybean fields throughout Brazil where yield loss assessments have reported reduction up to 30%. Currently, no soybean cultivars resistant to P. brachyurus have been identified, and management strategies include crop rotation with non-host crops, fallow, and the application of nematicides. The goals of this study were to examine the population dynamics of P. brachyurus in soybean fields throughout Tocantins state and in areas planted with off-season crops following soybean harvest in a crop succession scheme. Pratylenchus brachyurus was present in ca. 82% of samples with densities in soybean fields ranging from 23 to 20,400 nematodes per 200 cm3 soil or 10 g root samples. In two sites, the mean nematode density was higher within infestation foci, which were characterized by poor soybean growth, compared to those from outside infestation foci, with an overall reduction of 44.3% in plant height and 39.7% in pod numbers. Following soybean harvest in areas planted with off-season crops including maize, sorghum, millet, crotalaria as well as an area maintained as a fallow treatment, the mean density of P. brachyurus ranged from 122 to 504 individuals per 10 g root sample and from 3 to 96 per 200 cm3 soil. Overall, the mean density of nematodes did not differ significantly among plant species and all crops used in the succession scheme allowed P. brachyurus multiplication. In summary, off-season cultivation with the crops used in this study is not recommended for management of P. brachyurus in soybean, but the use of fallow or non-hosts may be helpful in lowering the population density of P. brachyurus in soybean fields. MenosPratylenchus brachyurus has become increasingly common in soybean fields throughout Brazil where yield loss assessments have reported reduction up to 30%. Currently, no soybean cultivars resistant to P. brachyurus have been identified, and management strategies include crop rotation with non-host crops, fallow, and the application of nematicides. The goals of this study were to examine the population dynamics of P. brachyurus in soybean fields throughout Tocantins state and in areas planted with off-season crops following soybean harvest in a crop succession scheme. Pratylenchus brachyurus was present in ca. 82% of samples with densities in soybean fields ranging from 23 to 20,400 nematodes per 200 cm3 soil or 10 g root samples. In two sites, the mean nematode density was higher within infestation foci, which were characterized by poor soybean growth, compared to those from outside infestation foci, with an overall reduction of 44.3% in plant height and 39.7% in pod numbers. Following soybean harvest in areas planted with off-season crops including maize, sorghum, millet, crotalaria as well as an area maintained as a fallow treatment, the mean density of P. brachyurus ranged from 122 to 504 individuals per 10 g root sample and from 3 to 96 per 200 cm3 soil. Overall, the mean density of nematodes did not differ significantly among plant species and all crops used in the succession scheme allowed P. brachyurus multiplication. In summary, off-season cultivation with the crops u... Mostrar Tudo |
Palavras-Chave: |
Dinámica poblacional; Helmintos; Nemátodo de las lesiones radiculares; Semillas de soja; Tocantins. |
Thesagro: |
Dinâmica populacional; Glycine max; Helminto; Nematóide; Pratylenchus brachyurus; Raiz; Soja. |
Thesaurus Nal: |
Helminths; Population dynamics; Root lesion nematodes; Soybeans. |
Categoria do assunto: |
O Insetos e Entomologia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/134688/1/25827.pdf
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Marc: |
LEADER 02808naa a2200373 a 4500 001 2030429 005 2021-07-02 008 2015 bl uuuu u00u1 u #d 022 $a2220-5616 100 1 $aLIMA, F. S. de O. 245 $aPopulation dynamics of the root lesion nematode, Pratylenchus brachyurus, in soybean fields in Tocantins state and its effect to soybean yield.$h[electronic resource] 260 $c2015 520 $aPratylenchus brachyurus has become increasingly common in soybean fields throughout Brazil where yield loss assessments have reported reduction up to 30%. Currently, no soybean cultivars resistant to P. brachyurus have been identified, and management strategies include crop rotation with non-host crops, fallow, and the application of nematicides. The goals of this study were to examine the population dynamics of P. brachyurus in soybean fields throughout Tocantins state and in areas planted with off-season crops following soybean harvest in a crop succession scheme. Pratylenchus brachyurus was present in ca. 82% of samples with densities in soybean fields ranging from 23 to 20,400 nematodes per 200 cm3 soil or 10 g root samples. In two sites, the mean nematode density was higher within infestation foci, which were characterized by poor soybean growth, compared to those from outside infestation foci, with an overall reduction of 44.3% in plant height and 39.7% in pod numbers. Following soybean harvest in areas planted with off-season crops including maize, sorghum, millet, crotalaria as well as an area maintained as a fallow treatment, the mean density of P. brachyurus ranged from 122 to 504 individuals per 10 g root sample and from 3 to 96 per 200 cm3 soil. Overall, the mean density of nematodes did not differ significantly among plant species and all crops used in the succession scheme allowed P. brachyurus multiplication. In summary, off-season cultivation with the crops used in this study is not recommended for management of P. brachyurus in soybean, but the use of fallow or non-hosts may be helpful in lowering the population density of P. brachyurus in soybean fields. 650 $aHelminths 650 $aPopulation dynamics 650 $aRoot lesion nematodes 650 $aSoybeans 650 $aDinâmica populacional 650 $aGlycine max 650 $aHelminto 650 $aNematóide 650 $aPratylenchus brachyurus 650 $aRaiz 650 $aSoja 653 $aDinámica poblacional 653 $aHelmintos 653 $aNemátodo de las lesiones radiculares 653 $aSemillas de soja 653 $aTocantins 700 1 $aSANTOS, G. R. dos 700 1 $aNOGUEIRA, S. R. 700 1 $aSANTOS, P. R. R. dos 700 1 $aCORREA, V. R. 773 $tNematropica, Florida$gv. 45, n. 2, p. 170-177, 2015.
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Embrapa Acre (CPAF-AC) |
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Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
14/04/2010 |
Data da última atualização: |
16/05/2024 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
JORDÃO, A. R.; ABREU, J. B. R. DE; GOMIDE, C. A. de M.; DERESZ, F. |
Afiliação: |
ALISSON RODRIGUES JORDÃO, UFRRJ; JOÃO BATISTA RODRIGUES DE ABREU, UFRRJ; CARLOS AUGUSTO DE MIRANDA GOMIDE, CNPGL; FERMINO DERESZ, CNPGL. |
Título: |
Perda de forragem por senescência em Pastagem de capim-marandu sob manejo rotacionado com período de descanso fixo ou variável. |
Ano de publicação: |
2009 |
Fonte/Imprenta: |
In: FÓRUM DE PÓS-GRADUAÇÃO DA UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO, 4., 2009, Rio de Janeiro. Anais... Rio de Janeiro: UFRRJ, 2009. |
Idioma: |
Português |
Palavras-Chave: |
Altura do dossel. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/664192/1/Perda-de-forragem-por-senescencia.pdf
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Marc: |
LEADER 00613nam a2200145 a 4500 001 1664192 005 2024-05-16 008 2009 bl uuuu u00u1 u #d 100 1 $aJORDÃO, A. R. 245 $aPerda de forragem por senescência em Pastagem de capim-marandu sob manejo rotacionado com período de descanso fixo ou variável.$h[electronic resource] 260 $aIn: FÓRUM DE PÓS-GRADUAÇÃO DA UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO, 4., 2009, Rio de Janeiro. Anais... Rio de Janeiro: UFRRJ$c2009 653 $aAltura do dossel 700 1 $aABREU, J. B. R. DE 700 1 $aGOMIDE, C. A. de M. 700 1 $aDERESZ, F.
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