Data/hora: 07/06/2024 13:45:09

Biblioteca(s): | Embrapa Agropecuária Oeste; Embrapa Cerrados; Embrapa Trigo.
Data corrente: | 25/11/2021
Data da última atualização: | 07/01/2022
Autoria: | ASCARI, J. P.; BARRO, J. P.; SANTANA, F. M.; PADUA, J. M. V.; MACIEL, J. L. N.; LAU, D.; TORRES, G. A. M.; SBALCHEIRO, C. C.; SEIXAS, C. D. S.; GOULART, A. C. P.; SUSSEL, A. A. B.; SCHIPANSKI, C. A.; CHAGAS, D. F.; COELHO, M. A. O.; MONTECELLI, T. D. N.; AMARAL, D. R.; CUSTÓDIO, A. A. P.; MOREIRA, L. S. O.; UTIAMADA, C. M.; VENÂNCIO, W. S.; GOUSSAIN, R. C. S.; ALVES, K. S.; DEL PONTE, E. M.
Afiliação: | JOÃO P. ASCARI, Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, 36570-900, MG, Brazil; JHONATAN P. BARRO, Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, 36570-900, MG, Brazil; FLAVIO MARTINS SANTANA, CNPT; JOSÉ M. V. PADUA, Departamento de Agricultura, Universidade Federal de Lavras, Lavras, 37200-900, MG, Brazil; JOAO LEODATO NUNES MACIEL, CNPT; DOUGLAS LAU, CNPT; GISELE ABIGAIL MONTAN TORRES, CNPT; CHEILA CRISTINA SBALCHEIRO, CNPT; CLAUDINE DINALI SANTOS SEIXAS, CNPSO; AUGUSTO CESAR PEREIRA GOULART, CPAO; ANGELO APARECIDO BARBOSA SUSSEL, CPAC; CARLOS A. SCHIPANSKI, G12 Agro Pesquisa e Consultoria Agronômica, Guarapuava, 85015-344, PR, Brazil; DÉBORA F. CHAGAS, G12 Agro Pesquisa e Consultoria Agronômica, Guarapuava, 85015-344, PR, Brazil; MAURÍCIO A. O. COELHO, Empresa de Pesquisa Agropecuária de Minas Gerais, Patos de Minas, 38700-970, MG, Brazil; TATIANE D. N. MONTECELLI, Coodetec, Cascavel, 85818-650, PR, Brazil; DANIEL R. AMARAL, Instituto Federal do Triângulo Mineiro Uberaba, 38064-790, MG, Brazil; ADRIANO A. P. CUSTÓDIO, Área de Proteção de Plantas, Instituto Agronômico do Paraná, Londrina, 86047-902, PR, Brazil; LUCAS S. O. MOREIRA, Área de Proteção de Plantas, Instituto Agronômico do Paraná, Londrina, 86047-902, PR, Brazil; CARLOS M. UTIAMADA, Tagro, Londrina, 86070-460, PR, Brazil; WILSON S. VENÂNCIO, Estação Experimental Agrícola Campos Gerais, Palmeira, 84130-000, PR, Brazil; RITA C. S. GOUSSAIN, Instituto Federal do Mato Grosso, Campo Verde, 78840-000, MT, Brazil; KAIQUE S. ALVES, Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, 36570-900, MG, Brazil; EMERSON M. DEL PONTE, Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, 36570-900, MG, Brazil.
Título: | Sequential post-heading applications for controlling wheat blast: a nine-tear summary of fungicide performance in Brazil.
Ano de publicação: | 2021
Fonte/Imprenta: | Plant Disease, PDIS-06-21-1183-RE Jul. 2021.
Idioma: | Inglês

Conteúdo:

Wheat blast, caused by Pyricularia oryzae Triticum (PoT) lineage, is a major constraint to wheat production, mainly in the tropics of Brazil where severe epidemics have been more frequent. We  analyzed disease and wheat yield data from uniform field trials conducted during nine years (2012 to 2020) in order to assess whether the percent control and yield response were influenced by fungicide type, region (tropical or subtropical), and year. Six treatments were selected, all evaluated in at least 19 trials. Two  ungicides were applied as solo active ingredients: MANCozeb, and TEBUconazole, and four were premixes: AZOXystrobin + TEBU, TriFLoXystrobin + PROThioconazole, TFLX + TEBU, and PYRAclostrobin + EPOXiconazole. Percent control, calculated from back- ransforming estimates by a meta-analysis network model fitted to the log of the means, ranged from 43 to 58%, with all but PYRA + EPOX showing efficacy greater than 52% on average, not differing among them. The variation in both efficacy and yield response was explained by region and all but TEBU performed better in the subtropics Than in the tropics. Yield response from using three sequential sprays was around two times 
greater in the subtropics (319 to 532 kg/ha) than in the tropics (149 to 241.3 kg/ha). No significant decline in fungicide efficacy or yield response was observed in nine years of study for any of the fungicides. Our results reinforce the need to improve control by adopting an integrated management approach in the tropics given the poorer performance and lower profitability, especially for the premixes, than in the subtropics. Keywords: Pyricularia oryzae, chemical control, profitability, meta-analysis

Thesagro: | Pyricularia Oryzae.
Thesaurus Nal: | Chemical control; Meta-analysis; Profitability.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/228150/1/pdis-06-21-1183-re.pdf
Registro original: | Embrapa Agropecuária Oeste (CPAO)

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CNPT - (45237-1) - UPC - AP - DD -  -  -  - DIS
CPAO - (37250-1) - UMT - AP - DD -  -  -  - DIS
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