Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/919008
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dc.contributor.authorVENANCIO, W. S.pt_BR
dc.contributor.authorVENANCIO, R. M.pt_BR
dc.contributor.authorMEYER, M. C.pt_BR
dc.contributor.authorNUNES JUNIOR, J.pt_BR
dc.contributor.authorBEGLIOMINI, E.pt_BR
dc.contributor.authorJASPER, M.pt_BR
dc.date.accessioned2012-03-15T11:11:11Zpt_BR
dc.date.accessioned2012-03-15T11:11:11Zpt_BR
dc.date.available2012-03-15T11:11:11Zpt_BR
dc.date.available2012-03-15T11:11:11Zpt_BR
dc.date.created2012-03-15pt_BR
dc.date.issued2011pt_BR
dc.identifier.citationIn: PLANT MANAGEMENT NETWORK; FIELD CROPS RUST SYMPOSIUM, San Antonio, 2011. Proceedings ... Saint Paul: APS: ASA: CSSA: 2011. Abstract, 24. Disponível em: < http://www.plantmanagementnetwork.org/proceedings/FCRS/2011/posters/>.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/919008pt_BR
dc.descriptionThe development of resistant cultivars to the Asian soybean rust (ASR), caused by Phakopsora pachyrhizi, brought an additional tool to the disease management in Brazil. ASR develops slower in resistant cultivars than in susceptible ones, allowing a reduction of the number of fungicide sprays, but chemical control is still necessary. A field trial was conducted in Ponta Grossa, Parana State, in order to compare the effects of ASR chemical control with four fungicide formulations, in both resistant (BRSGO 7560) and susceptible (CD 249 RR) soybean cultivars. The fungicides were applied twice, beginning at soybean growth stage R3?R4, when first uredinia were observed, and at soybean stage R5.3?R5.4. The fungicides used were premix formulations of pyraclostrobin + epoxiconazole + fluxapyroxad (40+64.8+40 g a.i./ha), azoxystrobin + cyproconazole (60+24 g a.i./ha), pyraclostrobin + epoxiconazole (79.8+30 g a.i./ha), and epoxiconazole (125 g a.i./ha). The ASR severity at soybean growth stage R7 on nonsprayed plots reached 75.4% on the resistant cultivar and 98.6% on the susceptible cultivar. Lower ASR severity index were observed in the resistant cultivar, with the treatments pyraclostrobin + epoxiconazole (9.8%), pyraclostrobin + epoxiconazole + fluxapyroxad (10.5%), and azoxystrobin + cyproconazole (10.9%), with an average of disease control ranging from 90.8 to 91.3%. The treatments with pyraclostrobin + epoxiconazole and pyraclostrobin + epoxiconazole + fluxapyroxad provided the lower yield reductions on both soybean cultivars. The yield and grain weight reductions in the nonsprayed treatment were 32 and 28%, respectively, on the resistant cultivar and 44 and 32%, respectively, on the susceptible cultivar.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleComparison of asian soybean rust chemical control on a susceptible and a resistant cultivar in Brazil.pt_BR
dc.typeResumo em anais e proceedingspt_BR
dc.date.updated2013-06-11T11:11:11Zpt_BR
dc.subject.thesagroSojapt_BR
dc.subject.thesagroDoença de plantapt_BR
dc.subject.thesagroFerrugempt_BR
dc.subject.thesagroDoença fúngicapt_BR
dc.subject.thesagroPhakopsora Pachyrhizipt_BR
dc.subject.nalthesaurusSoybeanspt_BR
dc.subject.nalthesaurusPlant diseases and disorderspt_BR
riaa.ainfo.id919008pt_BR
riaa.ainfo.lastupdate2013-06-11pt_BR
dc.contributor.institutionW. S. VENANCIO, EEACG/UEPG, Ponta Grossa, PR, Brazilpt_BR
dc.contributor.institutionR. M. VENANCIO, CESCAGE - Ponta Grossa, PReng
dc.contributor.institutionMAURICIO CONRADO MEYER, CNPSOeng
dc.contributor.institutionJ. NUNES JUNIOR, CTPA - Goiânia, GO.eng
dc.contributor.institutionE. BEGLIOMINI, BASF, Singapura.eng
dc.contributor.institutionM. JASPER, CESCAGE - Ponta Grossa, PR.eng
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