Data/hora: 20/06/2024 16:52:54

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Unidades Centrais.
Data corrente: | 10/02/2003
Data da última atualização: | 04/05/2022
Autoria: | PRABHU, A. S.; FILIPPI, M. C.; ZIMMERMANN, F. J. P.
Afiliação: | ANNE SITARAMA PRABHU, CNPAF; MARTA CRISTINA CORSI DE FILIPPI, CNPAF; FRANCISCO JOSE P ZIMMERMANN, CNPAF.
Título: | Cultivar response to fungicide application in relation to rice blast control, productivity and sustainability.
Ano de publicação: | 2003
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, v. 38, n. 1, p. 11-17, jan. 2003.
ISSN: | 0100-204X
Idioma: | Inglês
Conteúdo: | Four field trials were conducted, from 1995 to 1997, with the objective of studying theresponse of four upland cultivars to foliar fungicide application in relation to panicle blast control, grain yield and sustainability. Differential disease control and yield response of cultivars to fungicide treatment were obtained. Losses in grain yield of cultivars IAC 202, Caiapó, Rio Paranaíba and Araguaia dueto panicle blast were 44.8%, 27.4%, 24.4% and 18.2%, respectively. Two applications of tricyclazole or benomyl controlled panicle blast, as indicated by lower values of disease progress curve and relative panicle blast severity, and increased grain yield of the cultivar IAC 202. The losses in 100 panicle grain weight and grain yield were significantly reduced by 22.3% and 25.1% in IAC 202 and 23.6% and20.5% in Caiapó, respectively, with two sprays of tricyclazole. Sustainable value index for yield was maximum with two applications of tricyclazole (0.59), followed by one application at booting (0.46)and at heading (0.40) in cultivar IAC 202. Results showed no yield response of the cultivars Rio Paranaíba and Araguaia to fungicide applications for panicle blast control.
Palavras-Chave: | combate às pragas; fatores de rendimento; yield factors.
Thesagro: | Arroz; Brusone; Controle Químico; Oryza Sativa; Pyricularia Grisea; Rendimento.
Thesaurus Nal: | chemical control; pest control.

Categoria do assunto:

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H Saúde e Patologia

URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/24346/1/011.pdf
Registro original: | Embrapa Arroz e Feijão (CNPAF)

Exemplares:

AI-SEDE - (24346-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS
CNPAF - (19504-1) - UPC - AP - PP - 2003 -  - 2003 - DIS