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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Clima Temperado. |
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Data corrente: |
13/02/2023 |
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Data da última atualização: |
14/02/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PAZINI, J. DE B.; GRÜTZMACHER, A. D.; SEIDEL, E. J.; VIEIRA, A. M. C.; PADILHA, A. C.; BRITO, G. G. de; BERNARDI, D.; BARRIGOSSI, J. A. F.; MARTINS, J. F. da S. |
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Afiliação: |
JULIANO DE B. PAZINI, UNIVERSIDADE FEDERAL DE PELOTAS; ANDERSON D. GRÜTZMACHER, UNIVERSIDADE FEDERAL DE PELOTAS; ENIO J. SEIDEL, UNIVERSIDADE FEDERAL DE SANTA MARIA; AFRÂNIO M. C. VIEIRA, UNIVERSIDADE FEDERAL DE SÃO CARLOS; ALINE C. PADILHA, UNIVERSIDADE DE SÃO PAULO; GIOVANI GREIGH DE BRITO, CPACT; DANIEL BERNARDI, UNIVERSIDADE FEDERAL DE PELOTAS; JOSE ALEXANDRE F BARRIGOSSI, CNPAF; JOSE FRANCISCO DA SILVA MARTINS, CPACT. |
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Título: |
Differential response to the South American rice water weevil (Coleoptera: Curculionidae) damage of rice cultivars with contrasting levels of resistance: implications for field management. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Pest Management Science, v. 79, n. 3, p. 947-958, Mar. 2023. |
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ISSN: |
1526-4998 |
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DOI: |
https://doi.org/10.1002/ps.7262 |
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Idioma: |
Inglês |
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Conteúdo: |
BACKGROUND Oryzophagus oryzae (Costa Lima) (Coleoptera: Curculionidae) is a major pest of flooded rice paddies throughout South America, and species with very similar life histories are present in many rice-producing regions of the world (collectively rice water weevils, RWWs). The damage caused by RWW larvae on rice cultivars with contrasting levels of resistance (?BRS Pampa CL'= 'Pamp': susceptible, 'BRS Atalanta' = 'Atal': resistant-antibiosis) was evaluated in two consecutive years in the field under seven infestation levels: 0, 2, 4, 6, 8, 10 and 20 adult couples per cage with plants. RESULTS Higher densities of adults increased the number of leaf-feeding scars and larvae on roots, respectively, at the rate <-8804;2.14 and 2.75 in Pamp and 2.23 and 2.48 in Atal, with the total number of larvae generated being lower in Atal. Grain yield was negatively impacted with increasing larval density on the roots, mainly by decreasing root volume and the number of grains per panicle. Root injury intensity and yield loss showed a nonlinear relationship. It was found that significant yield losses occurred with 8.37 larvae per plant in Pamp and 9.80 larvae per plant in Atal. CONCLUSION The results provided the first evidence of a tolerance limit for RWW larval damage that, even though similar between cultivars of contrasting resistance, corresponds to twice the current conventional level for larval control in Brazil. We also discuss here the potential of applying tolerance limits to manage the RWW adult population in rice fields. MenosBACKGROUND Oryzophagus oryzae (Costa Lima) (Coleoptera: Curculionidae) is a major pest of flooded rice paddies throughout South America, and species with very similar life histories are present in many rice-producing regions of the world (collectively rice water weevils, RWWs). The damage caused by RWW larvae on rice cultivars with contrasting levels of resistance (?BRS Pampa CL'= 'Pamp': susceptible, 'BRS Atalanta' = 'Atal': resistant-antibiosis) was evaluated in two consecutive years in the field under seven infestation levels: 0, 2, 4, 6, 8, 10 and 20 adult couples per cage with plants. RESULTS Higher densities of adults increased the number of leaf-feeding scars and larvae on roots, respectively, at the rate <-8804;2.14 and 2.75 in Pamp and 2.23 and 2.48 in Atal, with the total number of larvae generated being lower in Atal. Grain yield was negatively impacted with increasing larval density on the roots, mainly by decreasing root volume and the number of grains per panicle. Root injury intensity and yield loss showed a nonlinear relationship. It was found that significant yield losses occurred with 8.37 larvae per plant in Pamp and 9.80 larvae per plant in Atal. CONCLUSION The results provided the first evidence of a tolerance limit for RWW larval damage that, even though similar between cultivars of contrasting resistance, corresponds to twice the current conventional level for larval control in Brazil. We also discuss here the potential of applying tolerance limits to ... Mostrar Tudo |
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Palavras-Chave: |
Control level; Damage boundary; Damage curve; Tolerance limit. |
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Thesagro: |
Arroz; Arroz Inundado; Oryza Sativa; Oryzophagus Oryzae; Praga; Praga de Planta. |
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Thesaurus Nal: |
Integrated pest management. |
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Categoria do assunto: |
--
O Insetos e Entomologia |
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Marc: |
LEADER 02727naa a2200373 a 4500
001 2151713
005 2023-02-14
008 2023 bl uuuu u00u1 u #d
022 $a1526-4998
024 7 $ahttps://doi.org/10.1002/ps.7262$2DOI
100 1 $aPAZINI, J. DE B.
245 $aDifferential response to the South American rice water weevil (Coleoptera$bCurculionidae) damage of rice cultivars with contrasting levels of resistance: implications for field management.$h[electronic resource]
260 $c2023
520 $aBACKGROUND Oryzophagus oryzae (Costa Lima) (Coleoptera: Curculionidae) is a major pest of flooded rice paddies throughout South America, and species with very similar life histories are present in many rice-producing regions of the world (collectively rice water weevils, RWWs). The damage caused by RWW larvae on rice cultivars with contrasting levels of resistance (?BRS Pampa CL'= 'Pamp': susceptible, 'BRS Atalanta' = 'Atal': resistant-antibiosis) was evaluated in two consecutive years in the field under seven infestation levels: 0, 2, 4, 6, 8, 10 and 20 adult couples per cage with plants. RESULTS Higher densities of adults increased the number of leaf-feeding scars and larvae on roots, respectively, at the rate <-8804;2.14 and 2.75 in Pamp and 2.23 and 2.48 in Atal, with the total number of larvae generated being lower in Atal. Grain yield was negatively impacted with increasing larval density on the roots, mainly by decreasing root volume and the number of grains per panicle. Root injury intensity and yield loss showed a nonlinear relationship. It was found that significant yield losses occurred with 8.37 larvae per plant in Pamp and 9.80 larvae per plant in Atal. CONCLUSION The results provided the first evidence of a tolerance limit for RWW larval damage that, even though similar between cultivars of contrasting resistance, corresponds to twice the current conventional level for larval control in Brazil. We also discuss here the potential of applying tolerance limits to manage the RWW adult population in rice fields.
650 $aIntegrated pest management
650 $aArroz
650 $aArroz Inundado
650 $aOryza Sativa
650 $aOryzophagus Oryzae
650 $aPraga
650 $aPraga de Planta
653 $aControl level
653 $aDamage boundary
653 $aDamage curve
653 $aTolerance limit
700 1 $aGRÜTZMACHER, A. D.
700 1 $aSEIDEL, E. J.
700 1 $aVIEIRA, A. M. C.
700 1 $aPADILHA, A. C.
700 1 $aBRITO, G. G. de
700 1 $aBERNARDI, D.
700 1 $aBARRIGOSSI, J. A. F.
700 1 $aMARTINS, J. F. da S.
773 $tPest Management Science$gv. 79, n. 3, p. 947-958, Mar. 2023.
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| 4. |  | BARRIGOSSI, J. A. F. Uso de agrotóxicos. In: BARRIGOSSI, J. A. F. (Ed.). Recomendações técnicas para a cultura de arroz irrigado no Mato Grosso do Sul. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2009. p. 105-110. (Embrapa Arroz e Feijão. Documentos, 235).| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 17. | | BARRIGOSSI, J. A. F.; FERREIRA, E. Insetos-praga. In: SANTIAGO, C. M.; BRESEGHELLO, H. C. de P.; FERREIRA, C. M. (Ed.). Arroz: o produtor pergunta, a Embrapa responde. 2. ed. rev. e ampl. Brasília, DF: Embrapa, 2013. p. 159-172. (Coleção 500 perguntas, 500 respostas).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 290 | |
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