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Registro Completo |
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
08/06/2006 |
Data da última atualização: |
08/06/2006 |
Autoria: |
REIS, R. F.; TIMMER, L. W.; GOES, A. de. |
Afiliação: |
Universidade Estadual Paulista-FCAV. |
Título: |
Effect of temperature, leaf wetness, and rainfall on the production of guignardia citricarpa ascospores and on black spot severity on sweet orange. |
Ano de publicação: |
2006 |
Fonte/Imprenta: |
Fitopatologia Brasileira, Brasília, v. 31, n. 1, p. 29-34, jan./fev., 2006. |
ISSN: |
0100-4158 |
Idioma: |
Português |
Conteúdo: |
The black spot of citrus (Citrus sp.) is caused by Guignardia citricarpa with ascospore production depending on temperature, leaf wetness, and rainfall. The number of ascospores produced was monitored using a spore trap and climatic factors were recorded using an automated meteorological station of 'Natal' and 'Valencia' sweet orange (Citrus sinensis) orchards in Mogi Guaçu in the state of São Paulo, Brazil, from November 2000 to March 2001. The fruits were bagged to prevent infection and the bags removed from different sets of fruit for one week during each of the 18 weeks of the season in both orchards. Ascospores were produced during the entire experimental period, from spring through summer, primarily after rain events. In both orchards, ascospore production reached a peak in January and February. Ascospore production was related to leaf wetness only in the Natal orange orchard but was not related to total rainfall or temperature in either orchard. Disease was most severe on fruit exposed the 7th, 8th, and 13th weeks after beginning the experiment in both cultivars as well as after the 16th week for 'Natal'. There was a strong relationship between disease severity and total rainfall for both orchards and a weak correlation between temperature and severity in the 'Natal' block only. There was no relationship between severity and leaf wetness or ascospore numbers. |
Palavras-Chave: |
climatic factores; Phyllosticta citricarpa. |
Thesagro: |
Citrus Sinensis. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02025naa a2200193 a 4500 001 1653702 005 2006-06-08 008 2006 bl uuuu u00u1 u #d 022 $a0100-4158 100 1 $aREIS, R. F. 245 $aEffect of temperature, leaf wetness, and rainfall on the production of guignardia citricarpa ascospores and on black spot severity on sweet orange. 260 $c2006 520 $aThe black spot of citrus (Citrus sp.) is caused by Guignardia citricarpa with ascospore production depending on temperature, leaf wetness, and rainfall. The number of ascospores produced was monitored using a spore trap and climatic factors were recorded using an automated meteorological station of 'Natal' and 'Valencia' sweet orange (Citrus sinensis) orchards in Mogi Guaçu in the state of São Paulo, Brazil, from November 2000 to March 2001. The fruits were bagged to prevent infection and the bags removed from different sets of fruit for one week during each of the 18 weeks of the season in both orchards. Ascospores were produced during the entire experimental period, from spring through summer, primarily after rain events. In both orchards, ascospore production reached a peak in January and February. Ascospore production was related to leaf wetness only in the Natal orange orchard but was not related to total rainfall or temperature in either orchard. Disease was most severe on fruit exposed the 7th, 8th, and 13th weeks after beginning the experiment in both cultivars as well as after the 16th week for 'Natal'. There was a strong relationship between disease severity and total rainfall for both orchards and a weak correlation between temperature and severity in the 'Natal' block only. There was no relationship between severity and leaf wetness or ascospore numbers. 650 $aCitrus Sinensis 653 $aclimatic factores 653 $aPhyllosticta citricarpa 700 1 $aTIMMER, L. W. 700 1 $aGOES, A. de 773 $tFitopatologia Brasileira, Brasília$gv. 31, n. 1, p. 29-34, jan./fev., 2006.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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Registros recuperados : 3 | |
3. |  | BALBINOT JUNIOR, A. A.; REIS, R. F.; DEBIASI, H.; FRANCHINI, J. C.; MANDARINO, J. M. G.; FERREIRA, A. S.; WERNER, F.; IWASAKI, G. S. Adubação nitrogenada na soja cultivada em solo arenoso no sistema de integração lavoura-pecuária. In: REUNIÃO DE PESQUISA DE SOJA, 34., 2014, Londrina. Resumos expandidos... Londrina: Embrapa Soja, 2014. p. 40-42.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Soja. |
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Registros recuperados : 3 | |
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