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Registros recuperados : 55 | |
22. | | LEITE, R. M. V. B. C. de; OLIVEIRA, F. A de; CASTRO, C. de. Reação de genótipos de girassol à mancha de Alternaria (Alternaria helianthi) em condições de campo, na safra 2005/2006. In: REUNIÃO NACIONAL DE PESQUISA DE GIRASSOL, 17.; SIMPÓSIO NACIONAL SOBRE A CULTURA DO GIRASSOL, 5., 2007, Uberaba. Anais... Londrina: Embrapa Soja, 2007. p. 29-31. (Embrapa Soja. Documentos, 292). Organizado por Odilon Ferreira Saraiva, Regina Maria Villas Bôas de Campos Leite, Simone Ery Grosskopf. Biblioteca(s): Embrapa Soja. |
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25. | | LEITE, R. M. V. B. C. de; OLIVEIRA, F. A de; CASTRO, C. de. Reação de genótipos de girassol à podridão (Sclerotinia sclerotiorum) em condições de campo, em 2005/2006. In: REUNIÃO NACIONAL DE PESQUISA DE GIRASSOL, 17.; SIMPÓSIO NACIONAL SOBRE A CULTURA DO GIRASSOL, 5., 2007, Uberaba. Anais... Londrina: Embrapa Soja, 2007. p. 32-36. (Embrapa Soja. Documentos, 292). Organizado por Odilon Ferreira Saraiva, Regina Maria Villas Bôas de Campos Leite, Simone Ery Grosskopf. Biblioteca(s): Embrapa Soja. |
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28. | | GOMES, D. P.; LEITE, R. M. V. B. C.; KRONKA, A. Z.; SILVA, G. C. Qualidade sanitária de sementes de girassol após tratamento com fungicida a base de carbendazin e tiran. In: REUNIÃO NACIONAL DE PESQUISA DE GIRASSOL, 17.; SIMPÓSIO NACIONAL SOBRE A CULTURA DO GIRASSOL, 5., 2007, Uberaba. Anais... Londrina: Embrapa Soja, 2007. p. 153-155. (Embrapa Soja. Documentos, 292). Organizado por Odilon Ferreira Saraiva, Regina Maria Villas Bôas de Campos Leite, Simone Ery Grosskopf. Biblioteca(s): Embrapa Soja. |
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32. | | OLIVEIRA JUNIOR, A.; CASTRO, C.; MOREIRA, A.; LEITE, R. M. V. B. C.; KLEPKER, D.; AMARAL, J. L. Balanço de fósforo e de potássio em sistema de produção de soja. In: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 31., 2010, Brasília, DF. Resumos... Londrina: Embrapa Soja, 2010. p. 404-406. Editores técnicos: Adilson de Oliveira Junior, Odilon Ferreira Saraiva, Regina Maria Villas Bôas de Campo Leite, César de Castro, Jussara Flores de Oliveira Arbues, Wellington Cavalcanti. Biblioteca(s): Embrapa Soja. |
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33. | | MARTINS, M. C.; BETTI, J. A.; LEITE, R. M. V. B. C.; LEITE JUNIOR, R. P.; AMORIM, L. Doenças das rosáceas de caroço (ameixeira, nectarineira, nespeira, pessegueiro e outras). In: KIMATI, H.; AMORIM, L.; REZENDE, J. A. M.; BERGAMIM FILHO, A.; CAMARGO, L. E. A. (Ed.). Manual de fitopatologia. 4. ed. São Paulo: Agonômica Ceres, 2005. v.2 p. 545-557. Biblioteca(s): Embrapa Soja. |
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34. | | GOMES, D. P.; LEITE, R. M. V. B. C.; KRONKA, A. Z.; SILVA, G. C.; SOUZA, J. R. Efeito da incidência de fungos na qualidade de sementes de girassol produzidas em São Luís, Maranhão. Fitopatologia Brasileira, Brasília, DF, v. 32, p. S271, ago. 2007. Suplemento, resumo 0811. Edição dos Resumos do XL Congresso Brasileiro de Fitopatologia, Maringá, PR, ago. 2007. Biblioteca(s): Embrapa Soja. |
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39. | | DOMIT, L. A.; BALLA, A.; LEITE, R. M. V. B. C.; GALERANI, P. R.; MELLO, H. C.; OLIVEIRA, M. F.; CASTIGLIONI, V. B. R. Avaliação e difusão de tecnologias para produção de girassol no Brasil (04.0.94.330-09). In: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR). Resultados de pesquisa da Embrapa Soja 1996. Londrina, 1997. p. 183-184. (EMBRAPA-CNPSo. Documentos, 104). Biblioteca(s): Embrapa Soja. |
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40. | | GOMES, D. P.; LEITE, R. M. V. B. C.; SILVA, A. C. da; SILVA, G. S.; MACIEL, A. A. S.; MACHADO, K. K. G. Efeito do armazenamento nas qualidades fisiológicas e sanitária de sementes de girassol produzidas em Balsas, Maranhão. In: ENCONTRO LATINO AMERICANO DE INICIAÇÃO CIENTÍFICA, 12.; ENCONTRO LATINO AMERICANO DE PÓS-GRADUAÇÃO, 8., São José dos Campos. Anais... [Universidade do Vale do Paraíba], 2008. 1 CD-ROM. Biblioteca(s): Embrapa Soja. |
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Registros recuperados : 55 | |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
03/03/2006 |
Data da última atualização: |
10/07/2017 |
Autoria: |
LEITE, R. M. V. B. C.; AMORIM, L.; BERGAMIN FILHO, A. |
Título: |
Relationships of disease and leaf area variables with yield in the Alternaria helianthi-?sunflower pathosystem. |
Ano de publicação: |
2006 |
Fonte/Imprenta: |
Plant Pathology, v. 55, n. 1, p. 73-81, Feb. 2006. |
Idioma: |
Inglês |
Conteúdo: |
Three field experiments were carried out in 1997/1998, 1998/1999 and 1999/2000 to investigate the relationship between severity (S) of alternaria leaf spot, caused by Alternaria helianthi, area under disease progress curve (AUDPC), healthy leaf area index at any given day (HLAI), healthy leaf area duration (HAD), radiation intercepted by healthy leaf area at any given day (HRI), total healthy leaf area absorption (HAA), and yield components of sunflower sown on four dates. AUDPC showed a relationship with yield in two years, following the negative exponential model coefficient of determination (R2 = 0·79 and 0·60). The HAD?yield relationship was linear for each of three trials (0·73 < R2 < 0·83). Among the integral variables analysed, the HAA?yield relationship was the best, fitted by the exponential model (0·77 < R2 < 0·89). Single-point models using disease severity, HLAI and HRI to estimate yield at various times during the crop season were tested. The slope of the severity?yield relationship was stable from the R1 (inflorescence visible) growth stage. The HLAI?yield relationship was stable between R1 and R6 (anthesis completed) and increased from the R7 (first phase of achene development) stage. The HRI?yield relationship was variable and not stable. The relationship between severity and yield in the R3 (second phase of inflorescence elongation) growth stage proved that plants with disease severity higher than 10% had yield lower than 500 kg ha1, regardless of the sowing date. This value can be used as a damage threshold for the disease. Disease severity can be used as an independent variable in a sunflower?-alternaria leaf spot management system and can be used to produce recommendations at the research level, such as genetic breeding for disease resistance or studies on sowing date. MenosThree field experiments were carried out in 1997/1998, 1998/1999 and 1999/2000 to investigate the relationship between severity (S) of alternaria leaf spot, caused by Alternaria helianthi, area under disease progress curve (AUDPC), healthy leaf area index at any given day (HLAI), healthy leaf area duration (HAD), radiation intercepted by healthy leaf area at any given day (HRI), total healthy leaf area absorption (HAA), and yield components of sunflower sown on four dates. AUDPC showed a relationship with yield in two years, following the negative exponential model coefficient of determination (R2 = 0·79 and 0·60). The HAD?yield relationship was linear for each of three trials (0·73 < R2 < 0·83). Among the integral variables analysed, the HAA?yield relationship was the best, fitted by the exponential model (0·77 < R2 < 0·89). Single-point models using disease severity, HLAI and HRI to estimate yield at various times during the crop season were tested. The slope of the severity?yield relationship was stable from the R1 (inflorescence visible) growth stage. The HLAI?yield relationship was stable between R1 and R6 (anthesis completed) and increased from the R7 (first phase of achene development) stage. The HRI?yield relationship was variable and not stable. The relationship between severity and yield in the R3 (second phase of inflorescence elongation) growth stage proved that plants with disease severity higher than 10% had yield lower than 500 kg ha1, regardless of the sowing... Mostrar Tudo |
Thesagro: |
Doença de Planta; Fungo; Girassol. |
Categoria do assunto: |
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Marc: |
LEADER 02369naa a2200181 a 4500 001 1468959 005 2017-07-10 008 2006 bl --- 0-- u #d 100 1 $aLEITE, R. M. V. B. C. 245 $aRelationships of disease and leaf area variables with yield in the Alternaria helianthi-?sunflower pathosystem. 260 $c2006 520 $aThree field experiments were carried out in 1997/1998, 1998/1999 and 1999/2000 to investigate the relationship between severity (S) of alternaria leaf spot, caused by Alternaria helianthi, area under disease progress curve (AUDPC), healthy leaf area index at any given day (HLAI), healthy leaf area duration (HAD), radiation intercepted by healthy leaf area at any given day (HRI), total healthy leaf area absorption (HAA), and yield components of sunflower sown on four dates. AUDPC showed a relationship with yield in two years, following the negative exponential model coefficient of determination (R2 = 0·79 and 0·60). The HAD?yield relationship was linear for each of three trials (0·73 < R2 < 0·83). Among the integral variables analysed, the HAA?yield relationship was the best, fitted by the exponential model (0·77 < R2 < 0·89). Single-point models using disease severity, HLAI and HRI to estimate yield at various times during the crop season were tested. The slope of the severity?yield relationship was stable from the R1 (inflorescence visible) growth stage. The HLAI?yield relationship was stable between R1 and R6 (anthesis completed) and increased from the R7 (first phase of achene development) stage. The HRI?yield relationship was variable and not stable. The relationship between severity and yield in the R3 (second phase of inflorescence elongation) growth stage proved that plants with disease severity higher than 10% had yield lower than 500 kg ha1, regardless of the sowing date. This value can be used as a damage threshold for the disease. Disease severity can be used as an independent variable in a sunflower?-alternaria leaf spot management system and can be used to produce recommendations at the research level, such as genetic breeding for disease resistance or studies on sowing date. 650 $aDoença de Planta 650 $aFungo 650 $aGirassol 700 1 $aAMORIM, L. 700 1 $aBERGAMIN FILHO, A. 773 $tPlant Pathology$gv. 55, n. 1, p. 73-81, Feb. 2006.
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