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Registro Completo |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
02/12/2015 |
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Data da última atualização: |
02/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LIMA, F. S. de O.; SANTOS, G. R. dos; NOGUEIRA, S. R.; SANTOS, P. R. R. dos; CORREA, V. R. |
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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. |
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Título: |
Population dynamics of the root lesion nematode, Pratylenchus brachyurus, in soybean fields in Tocantins state and its effect to soybean yield. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Nematropica, Florida, v. 45, n. 2, p. 170-177, 2015. |
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ISSN: |
2220-5616 |
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Idioma: |
Inglês |
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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 |
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Palavras-Chave: |
Dinámica poblacional; Helmintos; Nemátodo de las lesiones radiculares; Semillas de soja; Tocantins. |
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Thesagro: |
Dinâmica populacional; Glycine max; Helminto; Nematóide; Pratylenchus brachyurus; Raiz; Soja. |
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Thesaurus Nal: |
Helminths; Population dynamics; Root lesion nematodes; Soybeans. |
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Categoria do assunto: |
O Insetos e Entomologia |
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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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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio-Norte. Para informações adicionais entre em contato com cpamn.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
29/03/2000 |
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Data da última atualização: |
29/03/2000 |
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Autoria: |
MIRANDA, M. A. C. de; KASTER, M.; ALMEIDA, L. A. de; KIIHL, R. A. de S.; CAMPELO, G. J. A.; KLEPKER, D. |
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Afiliação: |
Embrapa Meio-Norte. |
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Título: |
BRSMA Tracaja: nova cultivar precoce de soja para os estados do Maranhao, Piaui e Tocantins. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
In: REUNIAO DE PESQUISA DE SOJA DA REGIAO CENTRAL DO BRASIL, 21., 1999, Dourados, MS. Resumos... Londrina: Embrapa Soja, 1999. p. 200-201. |
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Idioma: |
Português |
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Palavras-Chave: |
Maranhao; Piaui; Tocantins; Variedade BRSMA Tracaja. |
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Thesagro: |
Soja. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00736naa a2200229 a 4500
001 1057445
005 2000-03-29
008 1999 bl uuuu u00u1 u #d
100 1 $aMIRANDA, M. A. C. de
245 $aBRSMA Tracaja$bnova cultivar precoce de soja para os estados do Maranhao, Piaui e Tocantins.
260 $c1999
650 $aSoja
653 $aMaranhao
653 $aPiaui
653 $aTocantins
653 $aVariedade BRSMA Tracaja
700 1 $aKASTER, M.
700 1 $aALMEIDA, L. A. de
700 1 $aKIIHL, R. A. de S.
700 1 $aCAMPELO, G. J. A.
700 1 $aKLEPKER, D.
773 $tIn: REUNIAO DE PESQUISA DE SOJA DA REGIAO CENTRAL DO BRASIL, 21., 1999, Dourados, MS. Resumos... Londrina: Embrapa Soja, 1999. p. 200-201.
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