Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/205460
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dc.contributor.authorPRABHU, A. S.pt_BR
dc.contributor.authorFILIPPI, M. C. C. dept_BR
dc.contributor.authorZIMMERMANN, F. J. P.pt_BR
dc.date.accessioned2013-03-20T23:30:29Z-
dc.date.available2013-03-20T23:30:29Z-
dc.date.created1999-02-10pt_BR
dc.date.issued1996pt_BR
dc.identifier.citationPesquisa Agropecuária Brasileira, v. 31, n. 5, p. 339-347, maio 1996.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/205460pt_BR
dc.descriptionSix upland rice cultivars were evaluated under two nitrogen levels (10 kg and 60 kg N/ha) for blast control based on slow leaf and panicle blast characteristics in field experiments conducted during three consecutive years. The criteria for measuring slow blasting resistance were area under disease progress curve (AUDPC), maximum severity during disease progress (Ymax) and the rate of increase until the disease reaches maximum ('ymax.). There was a high positive correlation among the criteria utilized. The control of leaf blast in improved rice cultivars (Cuiabana, Centro America, Guarani, Rio Paranaiba) ranged from 36 to 56% for 10 kg/ha of N and from 19 to 49% for 60 kg/ha of N over the susceptible checks (IAC 47, IAC 165). The effect of slow blasting resistance on panicle blast control was less than on leaf blast in most of the cultivars. Increasing the nitrogen level from 10 to 60 kg/ha resulted in a mean yield increase by only 12% corresponding to 258 kg/ha. The data suggest that the existing level os slow blasting resistance in the improved rice cultivars is efficient only under low nitrogen level.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleGenetic control of blast in relation to nitrogen fertilization in upland rice.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2013-03-20T23:30:29Zpt_BR
dc.subject.thesagroArrozpt_BR
dc.subject.thesagroCerradopt_BR
dc.subject.thesagroEpidemiologiapt_BR
dc.subject.thesagroOryza Sativapt_BR
dc.subject.thesagroPyricularia Oryzaept_BR
dc.subject.thesagroResistênciapt_BR
dc.subject.thesagroPyricularia Griseapt_BR
dc.subject.nalthesaurusricept_BR
riaa.ainfo.id205460pt_BR
riaa.ainfo.lastupdate2013-03-20pt_BR
dc.contributor.institutionANNE SITARAMA PRABHU, CNPAFpt_BR
dc.contributor.institutionMARTA CRISTINA CORSI DE FILIPPI, CNPAFeng
dc.contributor.institutionFRANCISCO JOSE P ZIMMERMANN, CNPAF.eng
Appears in Collections:Artigo em periódico indexado (CNPAF)

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