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| Registros recuperados : 19 | |
| 1. |  | BRUCKNER, C. H.; SANTOS, E. M. dos; RÊGO, M. M. do; LIRA JÚNIOR, J. S. de. Biologia floral e polinização. Informe Agropecuário, Belo Horizonte, MG, v. 33, n. 269, p. 54-62, jul./ago. 2012.| Biblioteca(s): Epagri-Sede. |
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| 5. | | CALDEIRA, M. V. W.; SCHUMACHER, M. V.; TEDESCO, N.; PEREIRA, J. C.; SANTOS, E. M. dos. Producao de biomassa em uma procedencia australiana de Acacia mearnsii De Wild. plantada no sul do Brasil. Revista Arvore, Vicoca, v. 24, n. 2, p. 201-206, 2000,| Biblioteca(s): Epagri-Sede. |
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| 6. | | CALDEIRA, M.V.W.; SCHUMACHER, M.V.; PEREIRA, J.C.; DELLA-FLORA, J.B.; SANTOS, E.M. dos. Concentracao e redistribuicao de nutrientes nas folhas e no folhedo em um povoamento Acacia mearnsii De Wild. no Rio Grande do Sul. Ciencia Florestal, Santa Maria, v.9, n.1, p.19-24, 1999.| Biblioteca(s): Epagri-Sede. |
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| 7. | | CALDEIRA, M.V.W.; SCHUMACHER, M.V.; RONDON NETO, R.M.; WATZLAWICK, L.F.; SANTOS, E.M. dos. Quantificacao da biomassa acima do solo de acacia mearnsii de wild., procedencia batemans bay - Australia. Ciencia Florestal, Santa Maria,RS, v.11, n.2, p.79-91, 2001.| Biblioteca(s): Epagri-Sede. |
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| 8. | | CALDEIRA, W. V. M.; PEREIRA, J. C.; SCHUMA CHER, M. V.; DELA-FLORA, J. B.; SANTOS, E. M. dos. Comparacao entre as concentracoes de nutrientes nas folhas e no folhedo em um povoamento de Acacia mearnsii de Wild. Revista Arvore, Vicosa, MG, v.23, n.4, p.489-492, 1999.| Biblioteca(s): Epagri-Sede. |
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| 10. | | DANTAS, A.F.; PEREIRA FILHO, J.M.; SILVA, A.M.de A.; SANTOS, E.M.dos; SOUSA, B.B.de; CEZAR, M.F. Características da carcaça de ovinos Santa Inês terminados em pastejo e submetidos a diferentes níveis de suplementação. Ciência e Agrotecnologia, Lavras, v.32, n.4, p.1280-1286, jul./ago. 2008.| Biblioteca(s): Epagri-Sede. |
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| 11. | | OLIVEIRA NETO, F.M. de; TAVARES JUNIOR, J.J.; MIGUEL, V.; RODRIGUES, P. de T.R.; SANTOS, A.A.; TEODORO, M. das N.; SANTOS, E.M. dos; POLUCENO, R.; OGLIARI, R.A.; MARCOLLA, J.C.; RADAELI, I.S.; TEDESCO, E.; MIRANDA, L.C.G. de. Situacao socio-economica dos pescadores artesanais que operam na pesca de arrasto de camaroes de Santa Catarina: relatorio final. Florianoplis: Epagri - Gerencia de Aquicultura e Pesca, 1995. 16p.| Biblioteca(s): Epagri-Sede. |
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| 12. | | PEREIRA, J. C.; CALDEIRA, M. V. W.; SCHUMACHER, M. V.; HOPPE, J. M.; SANTOS, E. M. dos. Estimativa do conteudo de nutrientes em um povoamento de Acacia mearnsii De Wild. no Rio Grande do Sul - Brasil. Revista Arvore, Vicoca, v. 24, n. 2, p. 193-199, 2000,| Biblioteca(s): Epagri-Sede. |
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| 13. | | PEREIRA, J. C.; SCHUMACHER, M. V.; HOPPE, J. M.; CALDEIRA, M. V. W.; SANTOS, E. M. dos. Producao de biomassa em um povoamento de Acacia mearnsii de wild. no Estado do Rio Grande do Sul. Revista Arvore, Vicosa, MG, v. 21, n. 4, p. 521-526, 1997.| Biblioteca(s): Epagri-Sede. |
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| 16. | | SANTOS, E. M. dos; AZEVEDO, B. M. de; MARINHO, A. B.; CARVALHO, A. C. P. P. de; SARAIVA, K. R. Aclimatização de mudas micropropagadas de Bastão do Imperador em diferentes volumes de recipientes. Revista Ceres, Viçosa, v. 60, n. 1, p. 134-137, jan./fev. 2013.| Biblioteca(s): Epagri-Sede. |
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| 17. | | SANTOS, É. M. dos; SILVEIRA, B. D. da; SOUZA, A. C. de; SCHMITZ, V.; SILVA, A. C. da; HIGUCHI, P. Análise quali-quantitativa da arborização urbana em Lages, SC. Revista de Ciências Agroveterinárias, Lages, SC, v. 12, n. 1, p. 59-67, 2013.| Biblioteca(s): Epagri-Sede. |
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| Registros recuperados : 19 | |
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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
20/07/2021 |
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Data da última atualização: |
20/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - B |
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Autoria: |
SILVA, M. R.; STRECK, N. A.; YANG, H.; OGOSHI, C.; COSTA, I. F. D.; ROSSATO, I. G.; PEREIRA, V. F.; MEUS, L. D.; ZANON, A. J. |
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Título: |
Using hydro-thermal time for assessing rice blast risk in subtropical Brazil. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Agronomy Journal, Hoboken, Nova Jersey, EUA, v. 113, n. 2, p. 1-12, 2021. |
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Idioma: |
Inglês |
|
Conteúdo: |
In South Brazil, interannual variability leads to contrasting blast epidemics across
years, varying from years when symptoms can barely be seen up to years with complete
yield losses. To avoid yield losses, rice (Oryza sativa L.) farmers apply more
than two fungicide applications per rice growing season, even if weather conditions
are not favorable for blast development. The objective in this study was to use accumulated
hourly hydro-thermal time (HTT) to assess interannual and regional weather
variability for rice blast risk, using large data collected from multiple locations and
years in southern Brazil. For each year × site × cultivar combination, HTT was calculated
using hourly data of mean air temperature, relative humidity, and wind speed
collected from weather stations. The HTT was correlated with blast onset to define a
threshold for blast onset. The seasonal HTT between years × sites ranged from 5.1 to
725.3 °C h−1 year−1. Blast risk started after accumulating HTT of 33.6, 66.8, and
75.6 °C h−1 from 1 June until rice emergence (EM) and after accumulating HTT of
12.5, 55.3, and 121.8 °C h−1 after EMfor susceptible, medium-resistant, and resistant
rice cultivars, respectively. Our results strongly suggest that it is possible to improve
fungicide management using the HTT approach over the calendar-based approach,
oncewewere able to discriminate the cultivar and year influence, the two most important
factors on rice blast epidemics in southern Brazil. MenosIn South Brazil, interannual variability leads to contrasting blast epidemics across
years, varying from years when symptoms can barely be seen up to years with complete
yield losses. To avoid yield losses, rice (Oryza sativa L.) farmers apply more
than two fungicide applications per rice growing season, even if weather conditions
are not favorable for blast development. The objective in this study was to use accumulated
hourly hydro-thermal time (HTT) to assess interannual and regional weather
variability for rice blast risk, using large data collected from multiple locations and
years in southern Brazil. For each year × site × cultivar combination, HTT was calculated
using hourly data of mean air temperature, relative humidity, and wind speed
collected from weather stations. The HTT was correlated with blast onset to define a
threshold for blast onset. The seasonal HTT between years × sites ranged from 5.1 to
725.3 °C h−1 year−1. Blast risk started after accumulating HTT of 33.6, 66.8, and
75.6 °C h−1 from 1 June until rice emergence (EM) and after accumulating HTT of
12.5, 55.3, and 121.8 °C h−1 after EMfor susceptible, medium-resistant, and resistant
rice cultivars, respectively. Our results strongly suggest that it is possible to improve
fungicide management using the HTT approach over the calendar-based approach,
oncewewere able to discriminate the cultivar and year influence, the two most important
factors on rice blast epidemics in southern Br... Mostrar Tudo |
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Palavras-Chave: |
disease; management; Pyricularia oryzae. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02225naa a2200253 a 4500
001 1131009
005 2021-07-20
008 2021 bl uuuu u00u1 u #d
100 1 $aSILVA, M. R.
245 $aUsing hydro-thermal time for assessing rice blast risk in subtropical Brazil.$h[electronic resource]
260 $c2021
520 $aIn South Brazil, interannual variability leads to contrasting blast epidemics across years, varying from years when symptoms can barely be seen up to years with complete yield losses. To avoid yield losses, rice (Oryza sativa L.) farmers apply more than two fungicide applications per rice growing season, even if weather conditions are not favorable for blast development. The objective in this study was to use accumulated hourly hydro-thermal time (HTT) to assess interannual and regional weather variability for rice blast risk, using large data collected from multiple locations and years in southern Brazil. For each year × site × cultivar combination, HTT was calculated using hourly data of mean air temperature, relative humidity, and wind speed collected from weather stations. The HTT was correlated with blast onset to define a threshold for blast onset. The seasonal HTT between years × sites ranged from 5.1 to 725.3 °C h−1 year−1. Blast risk started after accumulating HTT of 33.6, 66.8, and 75.6 °C h−1 from 1 June until rice emergence (EM) and after accumulating HTT of 12.5, 55.3, and 121.8 °C h−1 after EMfor susceptible, medium-resistant, and resistant rice cultivars, respectively. Our results strongly suggest that it is possible to improve fungicide management using the HTT approach over the calendar-based approach, oncewewere able to discriminate the cultivar and year influence, the two most important factors on rice blast epidemics in southern Brazil.
653 $adisease
653 $amanagement
653 $aPyricularia oryzae
700 1 $aSTRECK, N. A.
700 1 $aYANG, H.
700 1 $aOGOSHI, C.
700 1 $aCOSTA, I. F. D.
700 1 $aROSSATO, I. G.
700 1 $aPEREIRA, V. F.
700 1 $aMEUS, L. D.
700 1 $aZANON, A. J.
773 $tAgronomy Journal, Hoboken, Nova Jersey, EUA$gv. 113, n. 2, p. 1-12, 2021.
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